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ActivityMainBinding.inflate

时间: 2024-03-09 09:50:50 浏览: 248
ActivityMainBinding.inflate 是使用 Android Data Binding 绑定库生成的用于 Activity 的绑定类，它可以将布局文件中定义的视图绑定到 Activity 中的变量，并且可以直接在 Activity 中使用这些绑定的视图，而不需要手动查找和绑定视图。 ActivityMainBinding.inflate 方法是用来将布局文件转化为绑定类的方法，它会返回一个 ActivityMainBinding 类型的对象，这个对象包含了布局文件中定义的所有视图的引用，这些视图可以直接在 Activity 中使用。 使用 ActivityMainBinding.inflate 方法时，需要将布局文件的资源 ID 作为参数传入，例如： ``` ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater()); ``` 这会生成一个 ActivityMainBinding 对象，它包含了布局文件中定义的所有视图的引用，可以通过 binding 对象来访问这些视图。
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android studio ActivityMainBinding.inflate

ActivityMainBinding.inflate() is a method used in Android Studio to create an instance of the binding class for a specific layout file. It inflates the specified layout file and returns an object of the binding class that can be used to access the UI elements in the layout. For example, if you have a layout file called activity_main.xml and a binding class called ActivityMainBinding, you can use the inflate() method to create an instance of the binding class for the layout file as follows: ``` ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); ``` The getLayoutInflater() method is used to get the LayoutInflater object that is used to inflate the layout file. The getRoot() method returns the root view of the inflated layout, which can be used to access the UI elements in the layout using the binding class.

android studio ActivityMainBinding.inflate的作用

ActivityMainBinding.inflate的作用是将布局文件转换成对应的Java对象，方便在代码中对布局进行操作。它是ViewBinding的一种实现方式，通过生成Binding类，可以直接访问布局文件中的视图，而不需要使用findViewById方法。在ActivityMainBinding.inflate方法中，使用LayoutInflater将布局文件转换成View对象，并将View对象包装在Binding类中，从而实现了直接访问布局文件中的视图的功能。
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具体来说，在onCreate()方法中，先通过ActivityMainBinding.inflate()完成视图绑定，再设置布局；为登录按钮添加监听器，获取输入框内的邮箱和密码内容进行非空校验，若两者均不为空则弹出“登录成功”的提示并...
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binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); } 在上面的代码中，我们使用 ActivityMainBinding 来绑定视图，然后使用 binding.getRoot() 来设置...
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binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) } fun onButtonClick() { binding.button.setOnClickListener { /* 点击事件处理 */ } } } **Android KTX** ...

binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot());

它通过使用 ActivityMainBinding.inflate(getLayoutInflater()) 将布局文件 activity_main.xml 转换为一个绑定类 ActivityMainBinding 的实例，然后使用 setContentView(binding.getRoot()) 将此实例的根...

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); setSupportActionBar(binding.toolbar);

具体来说，它通过 ActivityMainBinding 类中的 inflate() 方法将布局文件解析成一个 View 对象，并通过 setContentView() 方法将该 View 对象设置为 Activity 的内容视图。然后，通过 setSupportActionBar() 方法将 ...

kotlin中我不太理解一下这种写法：override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) //使用ViewBinding binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) //绑定ViewModel mainViewModel = ViewModelProvider(this, ViewModelFactory(NetworkUtils.apiService))[MainViewModel::class.java] //初始化 initView() //观察ViewModel observeViewModel() }，[MainViewModel::class.java]这个是什么意思

这段代码是在一个 Activity 中的 onCreate 方法中，主要实现了以下几个功能： 1. 使用 ViewBinding 技术生成对应布局文件的 Binding 对象 2. 绑定 ViewModel 3. 初始化界面 4. 观察 ViewModel ...

package com.example.apollo; import android.app.Activity; import android.os.Bundle; import android.content.pm.PackageManager; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RadioGroup; import android.widget.TextView; import android.widget.Toast; import androidx.activity.EdgeToEdge; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.ButtonBarLayout; import androidx.constraintlayout.widget.ConstraintLayout; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import androidx.core.graphics.Insets; import androidx.core.view.ViewCompat; import androidx.core.view.WindowInsetsCompat; import com.example.apollo.databinding.ActivityMainBinding; import androidx.appcompat.app.AppCompatActivity; public class xinxishoujijie extends AppCompatActivity { private ActivityMainBinding binding; private String infor = ""; ActivityMainBinding binding = ActivityMainBinding.inflate((getLayoutInflater())); ListView listView = binding.listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); binding =ActivityMainBinding.inflate(getLayoutInflater()); View view = binding.getRoot(); setContentView(view); binding.button.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v){ } }); } } 报错： Variable 'binding' is already defined in the scope Cannot resolve symbol 'listView' Incompatible types. Found: 'android.widget.', required: 'android.view.View' Cannot resolve symbol 'button'

好的，我现在需要帮助用户解决Android项目中遇到的三个编译错误：binding变量重复定义、listView未解析以及button点击事件的问题。让我先逐一分析每个问题可能的原因和解决办法。 首先，关于binding变量重复定义的...

binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); BottomNavigationView navView = findViewById(R.id.nav_view); // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder( R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main); NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration); NavigationUI.setupWithNavController(binding.navView, navController);

首先，通过使用 View Binding 将布局文件 activity_main.xml 转换为一个绑定类 ActivityMainBinding 的实例，并将其根视图设置为当前 Activity 的布局。 然后，通过 findViewById(R.id.nav_view) 获取了布局...

class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) // 1. 检查无障碍服务权限 binding.btnEnableService.setOnClickListener { startActivity(Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS)) } // 2. 启动/停止服务 binding.switchAutoGrab.setOnCheckedChangeListener { _, isChecked -> if (isChecked) { startService(Intent(this, GrabService::class.java)) Toast.makeText(this, "服务已启动", Toast.LENGTH_SHORT).show() } else { stopService(Intent(this, GrabService::class.java)) } } } }

binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) 这里使用了 Kotlin 中的 View Binding 技术来管理布局文件中的 UI 元素。通过将 XML 布局映射为对象形式，可以更方便地...

我用的是java，请根据这个前提再提供一份解决方案 package com.example.apollo; import android.app.Activity; import android.os.Bundle; import android.annotation.SuppressLint; import android.bluetooth.BluetoothAdapter; import android.content.Intent; import android.content.pm.PackageManager; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RadioGroup; import android.widget.TextView; import android.widget.Toast; import androidx.activity.EdgeToEdge; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.ButtonBarLayout; import androidx.constraintlayout.widget.ConstraintLayout; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import androidx.core.graphics.Insets; import androidx.core.view.ViewCompat; import androidx.core.view.WindowInsetsCompat; import com.example.apollo.databinding.ActivityMainBinding; import com.google.android.material.snackbar.Snackbar; import androidx.activity.EdgeToEdge; import androidx.appcompat.app.AppCompatActivity; public class xinxishoujijie extends AppCompatActivity { private ActivityMainBinding binding; private String infor = ""; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); binding =ActivityMainBinding.inflate(getLayoutInflater()); View view = binding.getRoot(); } } 报错： Incompatible types. Found: 'android.widget.', required: 'android.view.View' build.gradle.kts文件： plugins { alias(libs.plugins.android.application) } android { namespace = "com.example.apollo" compileSdk = 35 defaultConfig { applicationId = "com.example.apollo" minSdk = 24 targetSdk = 35 versionCode = 1

ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater()); ListView listView = binding.listView; // 自动类型推断 - **升级Gradle插件**：确保com.android.tools.build:gradle...

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binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); // 设置工具栏 setSupportActionBar(binding.appBarMain.toolbar); // FAB按钮点击事件 binding....

package com.yldiolage; import androidx.appcompat.app.AppCompatActivity; import android.content.DialogInterface; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; import com.google.android.material.button.MaterialButton; import com.google.android.material.dialog.MaterialAlertDialogBuilder; import com.yldiolage.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private ActivityMainBinding binding; private SharedPreferences sharedPreferences; private static final String PREFS_NAME = "AppPrefs"; private static final String KEY_DONT_SHOW = "dont_show"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Check if we should show the dialog sharedPreferences = getSharedPreferences(PREFS_NAME, MODE_PRIVATE); if (sharedPreferences.getBoolean(KEY_DONT_SHOW, false)) { startMainApp(); return; } binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); setupButtonClickListeners(); } private void setupButtonClickListeners() { if (binding == null) return; binding.bzxs.setOnClickListener(v -> { sharedPreferences.edit().putBoolean(KEY_DONT_SHOW, true).apply(); startMainApp(); }); binding.grql.setOnClickListener(v -> { showDialog("加入群聊", "即将跳转至QQ群", (dialog, which) -> { try { String qqGroupKey = "549587563"; String url = "mqqopensdkapi://bizAgent/qm/qr?url=https%3A%2F%2F2.zoppoz.workers.dev%3A443%2Fhttp%2Fqm.qq.com%2Fcgi-bin%2Fqm%2Fqr?from=app&p=android&k=" + qqGroupKey; Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); if (intent.resolveActivity(getPackageManager()) != null) { startActivity(intent); } else { showDialog("错误", "请先安装QQ客户端"); } } catch (Exception e) { showDialog("错误", "无法跳转到QQ: " + e.getMessage()); } }); }); binding.jrrj.setOnClickListener(v -> startMainApp()); } private void startMainApp() { // Replace with your actual main activity // startActivity(new Intent(this, MainAppActivity.class)); // finish(); showDialog("提示", "即将进入主程序"); } private void showDialog(String title, String message) { showDialog(title, message, null); } private void showDialog(String title, String message, DialogInterface.OnClickListener positiveListener) { new MaterialAlertDialogBuilder(this) .setTitle(title) .setMessage(message) .setPositiveButton("确定", positiveListener) .setCancelable(positiveListener == null) .show(); } @Override protected void onDestroy() { super.onDestroy(); binding = null; } }

$$binding = ActivityMainBinding.inflate(getLayoutInflater());$$ 使用View Binding技术替代findViewById，需要确保存在activity_main.xml布局文件 2. SharedPreferences配置： $$sharedPreferences = ...

package com.example.kucun2; import android.os.Bundle; import android.os.Looper; import android.view.View; import android.view.Menu; import android.widget.Toast; import com.example.kucun2.entity.data.ApiClient; import com.example.kucun2.DataPreserver.Data; import com.example.kucun2.DataPreserver.DataLoader; import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import androidx.drawerlayout.widget.DrawerLayout; import androidx.appcompat.app.AppCompatActivity; import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private AppBarConfiguration mAppBarConfiguration; private ActivityMainBinding binding; private OnDataLoadListener dataLoadListener; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 初始化UI占位视图（避免空白屏幕） setContentView(R.layout.activity_loading); // 启动数据加载 loadAppData(); } private void initUI() { // 确保在主线程执行 if (Looper.myLooper() != Looper.getMainLooper()) { runOnUiThread(this::initUI); return; } // 初始化API客户端 ApiClient.init(this); // 设置主布局 binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); // 设置工具栏 setSupportActionBar(binding.appBarMain.toolbar); // FAB按钮点击事件 binding.appBarMain.fab.setOnClickListener(view -> Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null) .setAnchorView(R.id.fab).show() ); // 导航设置 DrawerLayout drawer = binding.drawerLayout; NavigationView navigationView = binding.navView; // 顶部导航配置 mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_home, R.id.nav_kucun, R.id.nav_add_jinhuo, R.id.nav_diandan) .setOpenableLayout(drawer) .build(); // 导航控制器设置 NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); } @Override public boolean onCreateOptionsMenu(Menu menu) { // 加载菜单 getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } public interface OnDataLoadListener { void onDataLoaded(); void onDataError(); } public void setOnDataLoadListener(OnDataLoadListener listener) { this.dataLoadListener = listener; } private void loadAppData() { // 显示加载指示器 showLoadingIndicator(); Data.loadAllData(getApplicationContext(), new DataLoader.LoadDataCallback() { @Override public void onSuccess() { runOnUiThread(() -> { // 隐藏加载指示器 hideLoadingIndicator(); // 初始化UI initUI(); // 通知监听器 if (dataLoadListener != null) { dataLoadListener.onDataLoaded(); } // 显示成功消息 Toast.makeText(MainActivity.this, "数据加载成功", Toast.LENGTH_SHORT).show(); }); } @Override public void onFailure() { runOnUiThread(() -> { // 隐藏加载指示器 hideLoadingIndicator(); // 通知监听器 if (dataLoadListener != null) { dataLoadListener.onDataError(); } // 显示错误消息 Toast.makeText(MainActivity.this, "数据加载失败，请检查网络连接", Toast.LENGTH_LONG).show(); // 初始化UI（即使数据加载失败） initUI(); }); } }); } private void showLoadingIndicator() { // 实际项目中可以显示ProgressBar // 这里简单设置状态栏显示加载中 setTitle("加载中..."); } private void hideLoadingIndicator() { // 恢复标题 setTitle(getString(R.string.app_name)); } @Override protected void onStop() { super.onStop(); if (isFinishing()) { Data.saveAllData(this); } } @Override protected void onDestroy() { super.onDestroy(); // 确保数据保存 if (!isFinishing()) { Data.saveAllData(this); } } }不改变MainActivity

//设置主布局binding=ActivityMainBinding.inflate(getLayoutInflater());setContentView(binding.getRoot());//设置工具栏setSupportActionBar(binding.appBarMain.toolbar);//FAB按钮点击事件binding.appBarMain....

package com.example.kucun2; import android.app.ProgressDialog; import android.os.Bundle; import android.os.Looper; import android.util.Log; import android.view.Menu; import android.widget.Toast; import com.example.kucun2.DataPreserver.Data; import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView; import androidx.appcompat.app.AppCompatActivity; import androidx.drawerlayout.widget.DrawerLayout; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private AppBarConfiguration mAppBarConfiguration; private ActivityMainBinding binding; private OnDataLoadListener dataLoadListener; private static String TAG = "MainActivity"; private ProgressDialog progressDialog; // 等待对话框 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_loading); // 初始加载界面 loadAppData(); // 启动数据加载 } private void initUI() { // 确保在主线程执行 if (Looper.myLooper() != Looper.getMainLooper()) { runOnUiThread(this::initUI); return; } // 设置主布局 binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); Log.d(TAG, "initUI: setContentView(binding.getRoot());"); // 设置工具栏 setSupportActionBar(binding.appBarMain.toolbar); // FAB按钮点击事件 binding.appBarMain.fab.setOnClickListener(view -> Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null) .setAnchorView(R.id.fab).show() ); // 导航设置 DrawerLayout drawer = binding.drawerLayout; NavigationView navigationView = binding.navView; // 顶部导航配置 mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_home, R.id.nav_kucun, R.id.nav_add_jinhuo, R.id.nav_diandan) .setOpenableLayout(drawer) .build(); // 导航控制器设置 NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } public interface OnDataLoadListener { void onDataLoaded(); void onDataError(); } public void setOnDataLoadListener(OnDataLoadListener listener) { this.dataLoadListener = listener; } private void loadAppData() { // 创建并显示等待对话框 progressDialog = new ProgressDialog(this); progressDialog.setMessage("数据加载中，请稍候..."); progressDialog.setCancelable(false); // 不可取消 progressDialog.setIndeterminate(true); // 无限循环样式 progressDialog.show(); Log.d(TAG, "loadAppData: 显示等待对话框"); // 根据Data类定义，使用两个Runnable回调 Data.loadAllData(getApplicationContext(), // 成功回调 () -> { runOnUiThread(() -> { if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } initUI(); if (dataLoadListener != null) { dataLoadListener.onDataLoaded(); } Toast.makeText(MainActivity.this, "数据加载成功", Toast.LENGTH_SHORT).show(); Data.startPeriodicSync(MainActivity.this, 5); }); }, // 失败回调 () -> { runOnUiThread(() -> { if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } if (dataLoadListener != null) { dataLoadListener.onDataError(); } Toast.makeText(MainActivity.this, "数据加载失败，请检查网络连接", Toast.LENGTH_LONG).show(); initUI(); // 即使失败也初始化UI }); } ); } @Override protected void onStop() { super.onStop(); if (isFinishing()) { Data.saveAllData(this); } } @Override protected void onDestroy() { super.onDestroy(); // 确保对话框关闭 if (progressDialog != null && progressDialog.isShowing()) { progressDialog.dismiss(); } progressDialog = null; Data.stopPeriodicSync(); // 确保数据保存 if (!isFinishing()) { Data.saveAllData(this); } } }

private ActivityMainBinding binding; private OnDataLoadListener dataLoadListener; private ProgressDialog progressDialog; @Override protected void onCreate(Bundle savedInstanceState) { super....

package com.example.kucun2.DataPreserver; import android.content.Context; import android.util.Log; import com.example.kucun2.entity.*; import com.example.kucun2.entity.data.SynchronizableEntity; import com.example.kucun2.entity.data.SynchronizedList; import com.example.kucun2.function.MyAppFunction; import java.util.ArrayList; import java.util.List; /** * 数据管理中心（简化版） * 提供对所有业务数据的统一访问入口 */ public class Data { // 单例实例 private static final Data instance = new Data(); // 数据存储核心 private final DataStore dataStore = new DataStore(); // 初始化预置对象 static { new DataPreserver(instance.dataStore).ensurePreservedObjects(); } // ====================== 数据访问接口 ====================== public static SynchronizedList<Bancai> bancais() { return instance.dataStore.bancais; } public static SynchronizedList<Caizhi> caizhis() { return instance.dataStore.caizhis; } public static SynchronizedList<Mupi> mupis() { return instance.dataStore.mupis; } public static SynchronizedList<Chanpin> chanpins() { return instance.dataStore.chanpins; } public static SynchronizedList<Chanpin_Zujian> chanpin_zujians() { return instance.dataStore.chanpin_zujians; } public static SynchronizedList<Dingdan> dingdans() { return instance.dataStore.dingdans; } public static SynchronizedList<Dingdan_Chanpin> dingdan_chanpins() { return instance.dataStore.dingdan_chanpins; } public static SynchronizedList<Dingdan_bancai> Dingdan_bancais() { return instance.dataStore.dingdan_bancais; } public static SynchronizedList<Kucun> kucuns() { return instance.dataStore.kucuns; } public static SynchronizedList<Zujian> zujians() { return instance.dataStore.zujians; } public static SynchronizedList<User> users() { return instance.dataStore.users; } public static SynchronizedList<Jinhuo> jinhuos() { return instance.dataStore.jinhuos; } // ====================== 核心操作方法 ====================== /** * 添加实体 * @param entity 要添加的实体 * @param <T> 实体类型 */ public static <T extends SynchronizableEntity> void add(T entity) { SynchronizedList<T> list = (SynchronizedList<T>) getList(entity.getClass()); if (list != null) { list.addAsync(entity, new SyncCallback<T>()); } } /** * 更新实体 * @param entity 更新后的实体 * @param <T> 实体类型 */ public static <T extends SynchronizableEntity> void update(T entity) { T existing = (T) findById(entity.getId(), entity.getClass()); if (existing != null) { existing.updateFrom(entity); existing.sync("update", new SynchronizableEntity.SyncCallback() { @Override public void onSyncSuccess(SynchronizableEntity entity) { notifyDataChanged(); } @Override public void onSyncFailure(String error) { Log.e("Data", "更新失败: " + error); } }); } } /** * 删除实体 * @param id 实体ID * @param type 实体类型 * @param <T> 实体类型 */ public static <T extends SynchronizableEntity> void delete(int id, Class<T> type) { T entity = findById(id, type); if (entity != null) { SynchronizedList<T> list = getList(type); if (list != null) { list.removeAsync(entity, new SyncCallback<T>()); } } } /** * 根据ID查找实体 * @param id 实体ID * @param type 实体类型 * @return 找到的实体或null */ public static <T extends SynchronizableEntity> T findById(Integer id, Class<T> type) { SynchronizedList<T> list = getList(type); if (list != null) { for (T entity : list.getViewList()) { if (entity.getId() == id) { return entity; } } } return null; } // ====================== 数据加载与持久化 ====================== /** * 加载所有数据 */ public static void loadAllData(Context context, Runnable onSuccess, Runnable onFailure) { new DataLoader(instance.dataStore, new DataAssociator(instance.dataStore), new DataPreserver(instance.dataStore) ).loadAllData(context, new DataLoader.LoadDataCallback() { @Override public void onSuccess() { if (onSuccess != null) onSuccess.run(); } @Override public void onFailure() { if (onFailure != null) onFailure.run(); } }); } /** * 保存所有数据到本地 */ public static void saveAllData(Context context) { new DataExporter(instance.dataStore).saveToPreferences( context, new DataExporter(instance.dataStore).exportToJson() ); } // ====================== 辅助方法 ====================== /** * 获取当前登录用户 */ public static User getCurrentUser() { for (User user : users().getViewList()) { if (user.isCurrentUser()) { return user; } } return null; } /** * 设置当前用户 */ public static void setCurrentUser(User user) { for (User u : users().getViewList()) { u.setIsCurrentUser(u == user); } notifyDataChanged(); } // ====================== 事件通知 ====================== public interface OnDataChangeListener { void onDataChanged(); } private static final List<OnDataChangeListener> listeners = new ArrayList<>(); public static void addDataChangeListener(OnDataChangeListener listener) { listeners.add(listener); } public static void removeDataChangeListener(OnDataChangeListener listener) { listeners.remove(listener); } private static void notifyDataChanged() { for (OnDataChangeListener listener : listeners) { listener.onDataChanged(); } } // ====================== 内部工具类 ====================== /** * 获取实体对应的列表 */ @SuppressWarnings("unchecked") private static <T extends SynchronizableEntity> SynchronizedList<T> getList(Class<T> type) { if (type == Bancai.class) return (SynchronizedList<T>) instance.dataStore.bancais; if (type == Caizhi.class) return (SynchronizedList<T>) instance.dataStore.caizhis; if (type == Mupi.class) return (SynchronizedList<T>) instance.dataStore.mupis; if (type == Chanpin.class) return (SynchronizedList<T>) instance.dataStore.chanpins; if (type == Chanpin_Zujian.class) return (SynchronizedList<T>) instance.dataStore.chanpin_zujians; if (type == Dingdan.class) return (SynchronizedList<T>) instance.dataStore.dingdans; if (type == Dingdan_Chanpin.class) return (SynchronizedList<T>) instance.dataStore.dingdan_chanpins; if (type == Dingdan_bancai.class) return (SynchronizedList<T>) instance.dataStore.dingdan_bancais; if (type == Kucun.class) return (SynchronizedList<T>) instance.dataStore.kucuns; if (type == Zujian.class) return (SynchronizedList<T>) instance.dataStore.zujians; if (type == User.class) return (SynchronizedList<T>) instance.dataStore.users; if (type == Jinhuo.class) return (SynchronizedList<T>) instance.dataStore.jinhuos; return null; } /** * 同步操作回调（简化版） */ private static class SyncCallback<T extends SynchronizableEntity> implements SynchronizedList.OperationCallback<T> { @Override public void onSuccess(T item) { notifyDataChanged(); } @Override public void onFailure(T item, String error) { Log.e("Data", "操作失败: " + error); } } } package com.example.kucun2; import android.os.Bundle; import android.os.Looper; import android.util.Log; import android.view.View; import android.view.Menu; import android.widget.Toast; import com.example.kucun2.entity.data.ApiClient; import com.example.kucun2.DataPreserver.Data; import com.example.kucun2.DataPreserver.DataLoader; import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import androidx.drawerlayout.widget.DrawerLayout; import androidx.appcompat.app.AppCompatActivity; import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private AppBarConfiguration mAppBarConfiguration; private ActivityMainBinding binding; private OnDataLoadListener dataLoadListener; private static String TAG="MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 初始化UI占位视图（避免空白屏幕） setContentView(R.layout.activity_loading); // 启动数据加载 loadAppData(); } private void initUI() { // 确保在主线程执行 if (Looper.myLooper() != Looper.getMainLooper()) { runOnUiThread(this::initUI); return; } // 初始化API客户端 Log.d(TAG, "initUI: ApiClient.init(this);"); // 设置主布局 binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); Log.d(TAG, "initUI: setContentView(binding.getRoot());"); // 设置工具栏 setSupportActionBar(binding.appBarMain.toolbar); // FAB按钮点击事件 binding.appBarMain.fab.setOnClickListener(view -> Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null) .setAnchorView(R.id.fab).show() ); // 导航设置 DrawerLayout drawer = binding.drawerLayout; NavigationView navigationView = binding.navView; // 顶部导航配置 mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_home, R.id.nav_kucun, R.id.nav_add_jinhuo, R.id.nav_diandan) .setOpenableLayout(drawer) .build(); // 导航控制器设置 NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); } @Override public boolean onCreateOptionsMenu(Menu menu) { // 加载菜单 getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } public interface OnDataLoadListener { void onDataLoaded(); void onDataError(); } public void setOnDataLoadListener(OnDataLoadListener listener) { this.dataLoadListener = listener; } private void loadAppData() { // 显示加载指示器 showLoadingIndicator(); Log.d(TAG, "loadAppData: showLoadingIndicator"); Data.loadAllData(getApplicationContext(), new DataLoader.LoadDataCallback() { @Override public void onSuccess() { runOnUiThread(() -> { // 隐藏加载指示器 hideLoadingIndicator(); // 初始化UI initUI(); // 通知监听器 if (dataLoadListener != null) { dataLoadListener.onDataLoaded(); } // 显示成功消息 Toast.makeText(MainActivity.this, "数据加载成功", Toast.LENGTH_SHORT).show(); }); } @Override public void onFailure() { runOnUiThread(() -> { // 隐藏加载指示器 hideLoadingIndicator(); // 通知监听器 if (dataLoadListener != null) { dataLoadListener.onDataError(); } // 显示错误消息 Toast.makeText(MainActivity.this, "数据加载失败，请检查网络连接", Toast.LENGTH_LONG).show(); // 初始化UI（即使数据加载失败） initUI(); }); } }); } private void showLoadingIndicator() { // 实际项目中可以显示ProgressBar // 这里简单设置状态栏显示加载中 setTitle("加载中..."); } private void hideLoadingIndicator() { // 恢复标题 setTitle(getString(R.string.app_name)); } @Override protected void onStop() { super.onStop(); if (isFinishing()) { Data.saveAllData(this); } } @Override protected void onDestroy() { super.onDestroy(); // 确保数据保存 if (!isFinishing()) { Data.saveAllData(this); } } }修改MainActivity，加载数据时显示等待框

import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { // ... 其他成员变量保持不变 ... private ProgressDialog progressDialog; // 新增：...

E 鍒涘缓淇′换绠＄悊鍣ㄥけ璐� java.io.FileNotFoundException: server_cert.crt at android.content.res.AssetManager.nativeOpenAsset(Native Method) at android.content.res.AssetManager.open(AssetManager.java:1133) at android.content.res.AssetManager.open(AssetManager.java:1110) at com.example.kucun2.function.TLSUtils.loadCertificate(TLSUtils.java:105) at com.example.kucun2.function.TLSUtils.createTrustManager(TLSUtils.java:55) at com.example.kucun2.entity.data.ApiClient.init(ApiClient.java:47) at com.example.kucun2.MainActivity.initUI(MainActivity.java:40) at com.example.kucun2.MainActivity.-$$Nest$minitUI(Unknown Source:0) at com.example.kucun2.MainActivity$2.lambda$onSuccess$0(MainActivity.java:107) at com.example.kucun2.MainActivity$2.$r8$lambda$H663lyBU3DFFRVSp8j3jjHI0xzg(Unknown Source:0) at com.example.kucun2.MainActivity$2$$ExternalSyntheticLambda1.run(D8$$SyntheticClass:0) at android.app.Activity.runOnUiThread(Activity.java:8377) at com.example.kucun2.MainActivity$2.onSuccess(MainActivity.java:103) at com.example.kucun2.entity.data.Data.lambda$safeCallback$6(Data.java:444) at com.example.kucun2.entity.data.Data$$ExternalSyntheticLambda2.run(D8$$SyntheticClass:0) at android.os.Handler.handleCallback(Handler.java:1014) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loopOnce(Looper.java:250) at android.os.Looper.loop(Looper.java:340) at android.app.ActivityThread.main(ActivityThread.java:9913) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:621) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:957) 2025-06-16 02:05:49.168 19164-19164 ApiClient com.example.kucun2 D OkHttpClient initialized with custom certificate: server_cert.crtpackage com.example.kucun2.entity.data; import android.content.Context; import android.content.SharedPreferences; import android.os.Handler; import android.os.Looper; import android.util.Log; import com.example.kucun2.entity.*; import com.example.kucun2.function.MyAppFnction; import com.example.kucun2.function.SafeLogger; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import com.google.gson.reflect.TypeToken; import java.io.IOException; import java.lang.reflect.*; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.stream.Collectors; import okhttp3.*; /** * 核心数据管理中心 * 职责： * 1. 管理所有实体类的全局存储列表 * 2. 处理网络数据加载与本地持久化 * 3. 维护实体间关联关系 * 4. 管理数据同步状态 * * 优化点： * - 使用ConcurrentHashMap提升线程安全 * - 重构关联逻辑避免反射开销 * - 增强序列化/反序列化处理 * - 添加详细方法级注释 */ public class Data { // ====================== 实体存储区 ====================== // 所有实体列表使用线程安全的SynchronizedList // ====================== 静态数据列表声明 ====================== public static final SynchronizedList<Bancai> bancais = new SynchronizedList<>(Bancai.class); public static final SynchronizedList<Caizhi> caizhis = new SynchronizedList<>(Caizhi.class); public static final SynchronizedList<Mupi> mupis = new SynchronizedList<>(Mupi.class); public static final SynchronizedList<Chanpin> chanpins = new SynchronizedList<>(Chanpin.class); public static final SynchronizedList<Chanpin_Zujian> chanpin_zujians = new SynchronizedList<>(Chanpin_Zujian.class); public static final SynchronizedList<Dingdan> dingdans = new SynchronizedList<>(Dingdan.class); public static final SynchronizedList<Dingdan_Chanpin> dingdan_chanpins = new SynchronizedList<>(Dingdan_Chanpin.class); public static final SynchronizedList<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians = new SynchronizedList<>(Dingdan_chanpin_zujian.class); public static final SynchronizedList<Kucun> kucuns = new SynchronizedList<>(Kucun.class); public static final SynchronizedList<Zujian> zujians = new SynchronizedList<>(Zujian.class); public static final SynchronizedList<User> users = new SynchronizedList<>(User.class); public static final SynchronizedList<Jinhuo> jinhuos = new SynchronizedList<>(Jinhuo.class); private static User user; // 实体类型与列表的映射表 <实体类, 对应的同步列表> public static final Map<Class, SynchronizedList<SynchronizableEntity>> dataCollectionMap = new ConcurrentHashMap<>();; private static final Gson gson = GsonFactory.createGson(); private static OkHttpClient client; private static final String TAG = "DataLoader"; // 静态初始化：建立实体类型与列表的映射关系 static { try { // 通过反射获取所有SynchronizedList字段 for (Field field : Data.class.getDeclaredFields()) { if (SynchronizedList.class.equals(field.getType())) { SynchronizedList<?> list = (SynchronizedList<?>) field.get(null); if (list != null) { // 将实体类型与列表关联 dataCollectionMap.put(list.getEntityType(), (SynchronizedList<SynchronizableEntity>) list); } } } } catch (IllegalAccessException e) { throw new RuntimeException("初始化dataCollectionMap失败", e); } } // ====================== 核心数据加载方法 ====================== /** * 从服务器加载全量数据 * @param context Android上下文 * @param callback 加载结果回调 */ public static void loadAllData(Context context, LoadDataCallback callback) { // 主线程检查 if (Looper.myLooper() != Looper.getMainLooper()) { throw new IllegalStateException("必须在主线程调用Data.loadAllData"); } ensurePreservedObjects(); // 确保存在预置对象 // 使用传入的 Context 获取主线程 Handler Handler mainHandler = new Handler(context.getMainLooper()); // 确保使用安全的客户端 if (client == null) { client = MyAppFnction.getClient(); } ExecutorService executor = Executors.newSingleThreadExecutor(); executor.execute(() -> { SynchronizableEntity.setSyncEnabled(false); String url = MyAppFnction.getStringResource("string", "url") + MyAppFnction.getStringResource("string", "url_all"); Request request = new Request.Builder().url(url).build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e(TAG, "Failed to load data", e); SynchronizableEntity.setSyncEnabled(true); mainHandler.post(() -> { if (callback != null) callback.onFailure(); }); } @Override public void onResponse(Call call, Response response) throws IOException { if (!response.isSuccessful()) { Log.e(TAG, "Unexpected response code: " + response.code()); SynchronizableEntity.setSyncEnabled(true); mainHandler.post(() -> { if (callback != null) callback.onFailure(); }); return; } String responseData = response.body().string(); SynchronizableEntity.setSyncEnabled(true); ensurePreservedObjects(); // 在主线程处理解析 mainHandler.post(() -> { parseAndAssignData(responseData, context, callback); }); } }); }); } // ====================== 数据处理私有方法 ====================== /** * 解析JSON数据并更新到实体列表 */ private static void parseAndAssignData(String jsonData, Context context, LoadDataCallback callback) { try { // 解析顶层响应结构 Type responseType = new TypeToken<Information<AllDataResponse>>() {}.getType(); Information<AllDataResponse> info = gson.fromJson(jsonData, responseType); Log.d(TAG, "parseAndAssignData: "+jsonData); // 验证响应有效性 if (info == null || info.getData() == null || info.getStatus() != 200) { throw new IllegalStateException("无效服务器响应"); } AllDataResponse allData = info.getData(); SafeLogger.d("data", "原始数据: " + gson.toJson(allData)); // 更新所有数据列表 updateAllLists(allData); automaticAssociation(); // 建立实体关联 setAllEntitiesState(SynchronizableEntity.SyncState.MODIFIED); // 设置状态 safeCallback(callback, true); // 成功回调 } catch (Exception e) { Log.e(TAG, "数据处理异常: " + e.getMessage()); safeCallback(callback, false); } finally { SynchronizableEntity.setSyncEnabled(true); // 重新启用同步 } } /** * 批量更新所有实体列表 */ private static void updateAllLists(AllDataResponse allData) { updateList(bancais, allData.bancais); updateList(caizhis, allData.caizhis); updateList(mupis, allData.mupis); updateList(chanpins, allData.chanpins); updateList(chanpin_zujians, allData.chanpin_zujians); updateList(dingdans, allData.dingdans); updateList(dingdan_chanpins, allData.dingdan_chanpins); updateList(Dingdan_chanpin_zujians, allData.Dingdan_chanpin_zujians); updateList(kucuns, allData.kucuns); updateList(zujians, allData.zujians); updateList(users, allData.users); updateList(jinhuos, allData.jinhuos); } /** * 安全更新单个列表（保留预置对象） */ private static <T extends SynchronizableEntity> void updateList( List<T> existingList, List<T> newList ) { if (newList == null) return; // 保留现有列表中的预置对象 List<T> preservedItems = existingList.stream() .filter(item -> item != null && item.isPreservedObject()) .collect(Collectors.toList()); // 清空后重新添加（预置对象 + 有效新数据） existingList.clear(); existingList.addAll(preservedItems); existingList.addAll(newList.stream() .filter(item -> item != null && item.getId() != null && item.getId() != -1) .collect(Collectors.toList()) ); } /** * 确保每个列表都有预置对象（用于表示空值/默认值） */ private static void ensurePreservedObjects() { // 为每个实体类型检查并添加预置对象 addIfMissing(bancais, Bancai.class); addIfMissing(caizhis, Caizhi.class); addIfMissing(mupis, Mupi.class); addIfMissing(chanpins, Chanpin.class); addIfMissing(chanpin_zujians, Chanpin_Zujian.class); addIfMissing(dingdans, Dingdan.class); addIfMissing(kucuns, Kucun.class); addIfMissing(zujians, Zujian.class); addIfMissing(Dingdan_chanpin_zujians, Dingdan_chanpin_zujian.class); addIfMissing(dingdan_chanpins, Dingdan_Chanpin.class); addIfMissing(jinhuos, Jinhuo.class); addIfMissing(users, User.class); } private static <T extends SynchronizableEntity> void addIfMissing( List<T> list, Class<T> clazz ) { if (!containsPreservedObject(list)) { list.add(createInstance(clazz)); } } /** * 检查列表是否包含预置对象 * * @param list 目标实体列表 * @return 是否包含预置对象 */ private static <T extends SynchronizableEntity> boolean containsPreservedObject(List<T> list) { return list.stream().anyMatch(item -> item != null && item.isPreservedObject() ); } /** * 自动建立实体间关联关系（通过反射实现） */ private static void automaticAssociation() { for (Class<?> entityClass : dataCollectionMap.keySet()) { try { associateEntities(dataCollectionMap.get(entityClass)); } catch (Exception e) { Log.e(TAG, entityClass.getSimpleName() + " 关联失败", e); } } } private static <T extends SynchronizableEntity> void associateEntities( SynchronizedList<T> list ) throws IllegalAccessException, ClassNotFoundException { for (T entity : list) { if (entity == null) continue; for (Field field : entity.getClass().getDeclaredFields()) { field.setAccessible(true); Class<?> fieldType = field.getType(); // 处理实体引用字段 if (SynchronizableEntity.class.isAssignableFrom(fieldType)) { associateSingleReference(entity, field); } // 处理实体列表字段 else if (List.class.isAssignableFrom(fieldType)) { associateReferenceList(entity, field); } // 处理基础类型字段 else { setDefaultPrimitiveValue(entity, field); } } } } // ====================== 关联辅助方法 ====================== private static void associateSingleReference( SynchronizableEntity entity, Field field ) throws IllegalAccessException { SynchronizableEntity ref = (SynchronizableEntity) field.get(entity); Class<?> targetType = field.getType(); // 查找目标实体 SynchronizableEntity target = findTargetEntity(ref, targetType); field.set(entity, target); } private static void associateReferenceList( SynchronizableEntity entity, Field field ) throws IllegalAccessException, ClassNotFoundException { // 获取列表泛型类型 Type genericType = field.getGenericType(); if (!(genericType instanceof ParameterizedType)) return; Class<?> itemType = Class.forName( ((ParameterizedType) genericType).getActualTypeArguments()[0].getTypeName() ); // 只处理实体列表 if (!SynchronizableEntity.class.isAssignableFrom(itemType)) return; List<SynchronizableEntity> refList = (List<SynchronizableEntity>) field.get(entity); if (refList == null) { refList = new ArrayList<>(); field.set(entity, refList); } // 清理空值并重建引用 refList.removeAll(Collections.singleton(null)); for (int i = 0; i < refList.size(); i++) { refList.set(i, findTargetEntity(refList.get(i), itemType)); } } /** * 查找关联实体（优先匹配ID，找不到则使用预置对象） */ private static SynchronizableEntity findTargetEntity( SynchronizableEntity ref, Class<?> targetType ) { SynchronizedList<SynchronizableEntity> targetList = dataCollectionMap.get(targetType); if (targetList == null) return null; // 无效引用时返回预置对象 if (ref == null || ref.getId() == null || ref.getId() < 0) { return targetList.stream() .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null); } // 按ID查找目标实体 return targetList.stream() .filter(e -> ref.getId().equals(e.getId())) .findFirst() .orElseGet(() -> targetList.stream() // 找不到时回退到预置对象 .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null) ); } // ====================== 工具方法 ====================== /** * 创建带默认值的实体实例（用作预置对象） */ public static <T> T createInstance(Class<T> clazz) { try { T instance = clazz.getDeclaredConstructor().newInstance(); // 设置基础字段默认值 for (Field field : clazz.getDeclaredFields()) { field.setAccessible(true); setDefaultFieldValue(instance, field); } // 设置特殊字段 clazz.getMethod("setId", Integer.class).invoke(instance, -1); clazz.getMethod("setState", SynchronizableEntity.SyncState.class) .invoke(instance, SynchronizableEntity.SyncState.PRESERVED); return instance; } catch (Exception e) { Log.e("Data", "创建实例失败: " + clazz.getName(), e); try { return clazz.newInstance(); // 回退创建 } catch (Exception ex) { throw new RuntimeException("无法创建实例", ex); } } } private static <T> void setDefaultFieldValue(T instance, Field field) throws IllegalAccessException { Class<?> type = field.getType(); if (type == String.class) field.set(instance, "无"); else if (type == Integer.class || type == int.class) field.set(instance, -1); else if (type == Double.class || type == double.class) field.set(instance, -1.0); else if (type == Boolean.class || type == boolean.class) field.set(instance, false); else if (type == Date.class) field.set(instance, new Date()); else if (SynchronizableEntity.class.isAssignableFrom(type)) { field.set(instance, getPreservedEntity((Class<?>) type)); } else if (List.class.isAssignableFrom(type)) { field.set(instance, new ArrayList<>()); } } private static SynchronizableEntity getPreservedEntity(Class<?> type) { return dataCollectionMap.get(type).stream() .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null); } private static void setDefaultPrimitiveValue( SynchronizableEntity entity, Field field ) throws IllegalAccessException { if (field.get(entity) != null) return; Class<?> type = field.getType(); if (type == String.class) field.set(entity, "无"); else if (type == Integer.class || type == int.class) field.set(entity, -1); else if (type == Double.class || type == double.class) field.set(entity, -1.0); else if (type == Boolean.class || type == boolean.class) field.set(entity, false); else if (type == Date.class) field.set(entity, new Date()); } /** * 主线程安全回调 */ private static void safeCallback(LoadDataCallback callback, boolean success) { new Handler(Looper.getMainLooper()).post(() -> { if (callback == null) return; if (success) callback.onSuccess(); else callback.onFailure(); }); } /** * 设置所有实体同步状态 */ private static void setAllEntitiesState(SynchronizableEntity.SyncState state) { dataCollectionMap.values().forEach(list -> list.forEach(entity -> { if (entity != null) entity.setState(state); }) ); } public static String exportToJson() { ExportData exportData = new ExportData(); exportData.bancais = new ArrayList<>(bancais); exportData.caizhis = new ArrayList<>(caizhis); // 初始化其他列表... Gson gson = new GsonBuilder() .setPrettyPrinting() .registerTypeAdapter(SynchronizableEntity.class, new EntitySerializer()) .create(); return gson.toJson(exportData); } public static void importFromJson(String json, Context context) { Gson gson = new GsonBuilder() .registerTypeAdapter(SynchronizableEntity.class, new EntityDeserializer()) .create(); Type exportType = new TypeToken<ExportData>(){}.getType(); ExportData importData = gson.fromJson(json, exportType); // 更新数据列表 updateList(bancais, importData.bancais); updateList(caizhis, importData.caizhis); // 更新其他列表... automaticAssociation(); setAllEntitiesState(SynchronizableEntity.SyncState.MODIFIED); // 保存到SharedPreferences saveToPreferences(context, json); } private static void saveToPreferences(Context context, String json) { SharedPreferences prefs = context.getSharedPreferences("DataStore", Context.MODE_PRIVATE); prefs.edit().putString("jsonData", json).apply(); } public static void loadFromPreferences(Context context) { SharedPreferences prefs = context.getSharedPreferences("DataStore", Context.MODE_PRIVATE); String json = prefs.getString("jsonData", null); if (json != null) { importFromJson(json, context); } } // ====================== 内部类/接口 ====================== public interface LoadDataCallback { void onSuccess(); void onFailure(); } /** JSON响应数据结构 */ public static class AllDataResponse { public List<Bancai> bancais; public List<Caizhi> caizhis; public List<Mupi> mupis; public List<Chanpin> chanpins; public List<Chanpin_Zujian> chanpin_zujians; public List<Dingdan> dingdans; public List<Dingdan_Chanpin> dingdan_chanpins; public List<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians; public List<Kucun> kucuns; public List<Zujian> zujians; public List<User> users; public List<Jinhuo> jinhuos; } // 在Data.java中添加 public static class ExportData { public List<Bancai> bancais; public List<Caizhi> caizhis; public List<Mupi> mupis; public List<Chanpin> chanpins; public List<Chanpin_Zujian> chanpin_zujians; public List<Dingdan> dingdans; public List<Dingdan_Chanpin> dingdan_chanpins; public List<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians; public List<Kucun> kucuns; public List<Zujian> zujians; public List<User> users; public List<Jinhuo> jinhuos; } private static class EntityDeserializer implements JsonDeserializer<SynchronizableEntity> { @Override public SynchronizableEntity deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { JsonObject obj = json.getAsJsonObject(); String entityType = obj.get("entityType").getAsString(); Integer id = obj.get("id").getAsInt(); // 创建临时实体（只包含ID） try { Class<?> clazz = Class.forName("com.example.kucun2.entity." + entityType); SynchronizableEntity entity = (SynchronizableEntity) clazz.newInstance(); entity.setId(id); return entity; } catch (Exception e) { return null; } } } private static class EntitySerializer implements JsonSerializer<SynchronizableEntity> { @Override public JsonElement serialize(SynchronizableEntity src, Type typeOfSrc, JsonSerializationContext context) { JsonObject obj = new JsonObject(); obj.addProperty("id", src.getId()); obj.addProperty("entityType", src.getClass().getSimpleName()); return obj; } } }package com.example.kucun2; import android.os.Bundle; import android.os.Looper; import android.view.View; import android.view.Menu; import com.example.kucun2.entity.data.ApiClient; import com.example.kucun2.entity.data.Data; import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import androidx.drawerlayout.widget.DrawerLayout; import androidx.appcompat.app.AppCompatActivity; import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private AppBarConfiguration mAppBarConfiguration; private ActivityMainBinding binding; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 启动数据加载 loadAppData(); } private void initUI() { if (Looper.myLooper() != Looper.getMainLooper()) { throw new IllegalStateException("Must be called on the main thread"); } ApiClient.init(this); binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); // ... 其他初始化代码 ... setSupportActionBar(binding.appBarMain.toolbar); binding.appBarMain.fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null) .setAnchorView(R.id.fab).show(); } }); DrawerLayout drawer = binding.drawerLayout; NavigationView navigationView = binding.navView; // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_home, R.id.nav_kucun, R.id.nav_add_jinhuo, R.id.nav_diandan) .setOpenableLayout(drawer) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } public interface OnDataLoadListener { void onDataLoaded(); void onDataError(); } private OnDataLoadListener dataLoadListener; public void setOnDataLoadListener(OnDataLoadListener listener) { this.dataLoadListener = listener; } private void loadAppData() { Data.loadAllData(getApplicationContext(), new Data.LoadDataCallback() { @Override public void onSuccess() { runOnUiThread(() -> { if (dataLoadListener != null) { runOnUiThread(dataLoadListener::onDataLoaded); } initUI(); }); } @Override public void onFailure() { runOnUiThread(() -> { if (dataLoadListener != null) { runOnUiThread(dataLoadListener::onDataError); } }); } }); } }package com.example.kucun2.function; import android.content.Context; import android.util.Log; import java.io.IOException; import java.io.InputStream; import java.security.KeyManagementException; import java.security.KeyStore; import java.security.KeyStoreException; import java.security.NoSuchAlgorithmException; import java.security.cert.Certificate; import java.security.cert.CertificateException; import java.security.cert.CertificateFactory; import java.util.Arrays; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.TrustManagerFactory; import javax.net.ssl.X509TrustManager; public class TLSUtils { private static final String TAG = "TLSUtils"; /** * 创建信任自签名证书的SSL上下文 */ public static SSLContext createSSLContext(Context context, String fileName) { try { X509TrustManager trustManager = createTrustManager(context, fileName); return createSSLContext(trustManager); } catch (Exception e) { Log.e(TAG, "创建SSL上下文失败", e); return null; } } /** * 使用信任管理器创建SSL上下文 */ public static SSLContext createSSLContext(X509TrustManager trustManager) throws NoSuchAlgorithmException, KeyManagementException { SSLContext sslContext = SSLContext.getInstance("TLS"); sslContext.init(null, new TrustManager[]{trustManager}, null); return sslContext; } /** * 创建信任管理器 */ public static X509TrustManager createTrustManager(Context context, String fileName) { try { // 加载证书 Certificate certificate = loadCertificate(context, fileName); // 创建包含证书的KeyStore KeyStore keyStore = createKeyStoreWithCertificate(certificate); // 初始化信任管理器工厂 TrustManagerFactory tmf = TrustManagerFactory.getInstance( TrustManagerFactory.getDefaultAlgorithm()); tmf.init(keyStore); // 查找X509TrustManager for (TrustManager tm : tmf.getTrustManagers()) { if (tm instanceof X509TrustManager) { return (X509TrustManager) tm; } } throw new RuntimeException("未找到X509TrustManager"); } catch (Exception e) { Log.e(TAG, "创建信任管理器失败", e); return getSystemDefaultTrustManager(); // 回退到系统默认 } } /** * 获取系统默认信任管理器 */ private static X509TrustManager getSystemDefaultTrustManager() { try { TrustManagerFactory tmf = TrustManagerFactory.getInstance( TrustManagerFactory.getDefaultAlgorithm()); tmf.init((KeyStore) null); // 初始化系统默认信任库 for (TrustManager tm : tmf.getTrustManagers()) { if (tm instanceof X509TrustManager) { return (X509TrustManager) tm; } } } catch (Exception e) { Log.e(TAG, "获取系统默认信任管理器失败", e); } return null; } /** * 从assets加载证书 */ private static Certificate loadCertificate(Context context, String fileName) throws CertificateException, IOException { try (InputStream is = context.getAssets().open(fileName)) { CertificateFactory cf = CertificateFactory.getInstance("X.509"); return cf.generateCertificate(is); } } /** * 创建包含证书的KeyStore */ private static KeyStore createKeyStoreWithCertificate(Certificate certificate) throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException { KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType()); keyStore.load(null, null); // 创建空KeyStore keyStore.setCertificateEntry("server", certificate); return keyStore; } }

binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); setSupportActionBar(binding.appBarMain.toolbar); // 初始化导航等基础UI组件 DrawerLayout drawer = ...

每次重启项目报错1970-01-01 08:00:00.000 0-0 <no-tag> I ---------------------------- PROCESS ENDED (21062) for package com.example.kucun2 ---------------------------- 2025-06-16 02:13:56.761 22497-22497 cmd cmd E BBinder_init Processname cmd 2025-06-16 02:13:56.762 22497-22497 cmd cmd E BBinder_init hasGetProcessName cmd 2025-06-16 02:13:56.797 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.810 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684480, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.811 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684485, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.811 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684489, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.812 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684493, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.812 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684497, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.813 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684502, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.813 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684506, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.814 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684510, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.814 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684514, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.815 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684519, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.815 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684526, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.816 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684531, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.816 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684535, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.816 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684540, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.817 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684544, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.819 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684579, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.819 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684583, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.820 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684597, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.821 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684601, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.821 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684606, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.822 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684625, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.822 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684629, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.822 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684633, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.828 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684733, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.828 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684739, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.829 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684753, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.829 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684757, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.829 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684761, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.830 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684765, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.830 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684769, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.830 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684773, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.830 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684777, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.831 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684781, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.831 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684785, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.831 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684795, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.832 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684801, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.835 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684854, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.835 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684858, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.835 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684862, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.835 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684867, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.836 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.839 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.840 22500-22500 IPCThreadState service E Binder transaction failure. id: 152684962, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.841 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.842 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.847 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.850 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.850 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.852 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.853 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.856 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.860 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.869 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.870 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.877 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.881 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.895 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.900 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.907 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.909 22500-22500 Parcel service E Reading a NULL string not supported here. 2025-06-16 02:13:56.919 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686226, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.919 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686230, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.919 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686234, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.920 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686238, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.921 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686253, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.921 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686257, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.922 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686261, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.922 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686265, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.922 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686269, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.922 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686273, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.923 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686277, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.923 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686283, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.923 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686289, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.923 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686293, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.924 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686297, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.924 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686302, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.924 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686306, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.925 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686311, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.926 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686323, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.926 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686328, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.926 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686332, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.929 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686373, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.930 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686382, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.930 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686386, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.931 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686395, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.931 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686402, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.932 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686407, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.932 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686411, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.932 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686416, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.933 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686420, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.933 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686424, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.933 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686430, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.934 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686435, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.934 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686439, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.934 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686445, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.942 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686554, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.942 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686559, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.943 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686564, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.943 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686568, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.944 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686573, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.944 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686577, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.944 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686581, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.945 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686585, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.945 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686589, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.945 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686594, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.946 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686598, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.946 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686602, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.946 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686606, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.946 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686610, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.947 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686614, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.947 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686618, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.947 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686622, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.947 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686626, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.948 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686630, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.948 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686643, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.948 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686647, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.949 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686651, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.949 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686656, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.949 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686660, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.950 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686664, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.950 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686669, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.951 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686681, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.951 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686686, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.951 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686690, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.952 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686700, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.952 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686704, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.953 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686708, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.953 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686712, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.954 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686727, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.954 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686731, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.954 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686735, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.954 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686739, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.955 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686743, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.955 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686747, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.955 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686751, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.955 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686755, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.956 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686759, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.956 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686763, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.956 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686769, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.956 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686774, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.957 22500-22500 IPCThreadState service E Binder transaction failure. id: 152686779, BR_*: 29201, error: -1 (Operation not permitted) 2025-06-16 02:13:56.972 22500-22500 IPCThreadState service E Binder transaction failure. id: 152687050, BR_*: 29201, error: -1 (Operation not permitted) 1970-01-01 08:00:00.000 0-0 <no-tag> I ---------------------------- PROCESS STARTED (21838) for package com.example.kucun2 -----------package com.example.kucun2.entity.data; import static android.content.ContentValues.TAG; import android.content.Context; import android.util.Log; import com.example.kucun2.R; import com.example.kucun2.entity.Information; import com.example.kucun2.function.MyAppFnction; import com.example.kucun2.function.TLSUtils; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import java.io.IOException; import java.lang.reflect.Type; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLSocketFactory; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import okhttp3.Call; import okhttp3.Callback; import okhttp3.MediaType; import okhttp3.OkHttpClient; import okhttp3.Request; import okhttp3.RequestBody; import okhttp3.Response; import okhttp3.ResponseBody; public class ApiClient { // 使用Volley、Retrofit或OkHttp实现以下方法 private static final Gson gson = new Gson(); private static OkHttpClient client; private static final String TAG = "ApiClient"; private static final String CERT_FILE = "selfsigned.crt"; // 证书文件名 // 初始化方法 public static void init(Context context) { if (client != null) return; try { // 创建信任管理器 X509TrustManager trustManager = TLSUtils.createTrustManager(context, CERT_FILE); // 创建SSL上下文 SSLContext sslContext = SSLContext.getInstance("TLS"); sslContext.init(null, new TrustManager[]{trustManager}, null); // 配置OkHttpClient client = new OkHttpClient.Builder() .sslSocketFactory(sslContext.getSocketFactory(), trustManager) .connectTimeout(30, TimeUnit.SECONDS) .readTimeout(30, TimeUnit.SECONDS) .writeTimeout(30, TimeUnit.SECONDS) .build(); Log.d(TAG, "OkHttpClient initialized with custom certificate: " + CERT_FILE); } catch (Exception e) { Log.e(TAG, "Failed to initialize secure client", e); // 回退到默认配置（生产环境不应使用） client = new OkHttpClient(); } } public static <T, R> void post(String url, Information<T> requestData, ApiCallback<R> callback) { // 1. 构建请求体（JSON格式） String jsonRequest = ReflectionJsonUtils.toJson(requestData); RequestBody body = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonRequest); Log.d(TAG, "post: "+url); // 2. 创建POST请求 Request request = new Request.Builder() .url(url) .post(body) .build(); Log.d(TAG, "POST请求URL: " + url); Log.d(TAG, "请求数据: " + jsonRequest); // 3. 发送异步请求 client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e(TAG, "请求失败: " + e.getMessage()); if (callback != null) { callback.onError(-1, e.getMessage()); } } @Override public void onResponse(Call call, Response response) throws IOException { try (ResponseBody responseBody = response.body()) { if (!response.isSuccessful()) { Log.e(TAG, "服务器响应错误: " + response.code() + " - " + response.message()); if (callback != null) { callback.onError(response.code(), response.message()); } return; } // 4. 处理成功响应 String jsonResponse = responseBody.string(); Log.d(TAG, "服务器响应: " + jsonResponse); // 5. 解析为Information对象 // 注意：这里需要提前确定响应中data的类型（TypeToken） Type responseType = new TypeToken<Information<R>>() { }.getType(); Information<R> responseInfo = gson.fromJson(jsonResponse, responseType); if (callback != null) { callback.onSuccess(responseInfo); } } } }); } public static <T, R> void put(String url, Information<T> data, ApiCallback<T> callback) { String jsonRequest = ReflectionJsonUtils.toJson(data); RequestBody body = RequestBody.create(MediaType.parse("application/json"), jsonRequest); Request request = new Request.Builder() .url(url) .put(body) .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e(TAG, "PUT request failed", e); } @Override public void onResponse(Call call, Response response) throws IOException { if (response.isSuccessful() && callback != null) { String json = response.body().string(); Type responseType = new TypeToken<Information<T>>(){}.getType(); Information<T> info = gson.fromJson(json, responseType); callback.onSuccess(info); } } }); } public static <R> void delete(String url, ApiCallback<R> callback) { Request request = new Request.Builder() .url(url) .delete() .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e(TAG, "DELETE request failed", e); } @Override public void onResponse(Call call, Response response) throws IOException { if (response.isSuccessful() && callback != null) { // 对于删除操作，通常返回空数据 callback.onSuccess(new Information<>(200, "Deleted", null)); } } }); } public static interface ApiCallback<T> { void onSuccess(Information<T> data); void onError(int statusCode, String error); } }package com.example.kucun2.entity.data; import android.content.Context; import android.content.SharedPreferences; import android.os.Handler; import android.os.Looper; import android.util.Log; import com.example.kucun2.entity.*; import com.example.kucun2.function.MyAppFnction; import com.example.kucun2.function.SafeLogger; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonObject; import com.google.gson.JsonParseException; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import com.google.gson.reflect.TypeToken; import java.io.IOException; import java.lang.reflect.*; import java.util.*; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.stream.Collectors; import okhttp3.*; /** * 核心数据管理中心 * 职责： * 1. 管理所有实体类的全局存储列表 * 2. 处理网络数据加载与本地持久化 * 3. 维护实体间关联关系 * 4. 管理数据同步状态 * * 优化点： * - 使用ConcurrentHashMap提升线程安全 * - 重构关联逻辑避免反射开销 * - 增强序列化/反序列化处理 * - 添加详细方法级注释 */ public class Data { // ====================== 实体存储区 ====================== // 所有实体列表使用线程安全的SynchronizedList // ====================== 静态数据列表声明 ====================== public static final SynchronizedList<Bancai> bancais = new SynchronizedList<>(Bancai.class); public static final SynchronizedList<Caizhi> caizhis = new SynchronizedList<>(Caizhi.class); public static final SynchronizedList<Mupi> mupis = new SynchronizedList<>(Mupi.class); public static final SynchronizedList<Chanpin> chanpins = new SynchronizedList<>(Chanpin.class); public static final SynchronizedList<Chanpin_Zujian> chanpin_zujians = new SynchronizedList<>(Chanpin_Zujian.class); public static final SynchronizedList<Dingdan> dingdans = new SynchronizedList<>(Dingdan.class); public static final SynchronizedList<Dingdan_Chanpin> dingdan_chanpins = new SynchronizedList<>(Dingdan_Chanpin.class); public static final SynchronizedList<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians = new SynchronizedList<>(Dingdan_chanpin_zujian.class); public static final SynchronizedList<Kucun> kucuns = new SynchronizedList<>(Kucun.class); public static final SynchronizedList<Zujian> zujians = new SynchronizedList<>(Zujian.class); public static final SynchronizedList<User> users = new SynchronizedList<>(User.class); public static final SynchronizedList<Jinhuo> jinhuos = new SynchronizedList<>(Jinhuo.class); private static User user; // 实体类型与列表的映射表 <实体类, 对应的同步列表> public static final Map<Class, SynchronizedList<SynchronizableEntity>> dataCollectionMap = new ConcurrentHashMap<>();; private static final Gson gson = GsonFactory.createGson(); private static OkHttpClient client; private static final String TAG = "DataLoader"; // 静态初始化：建立实体类型与列表的映射关系 static { try { // 通过反射获取所有SynchronizedList字段 for (Field field : Data.class.getDeclaredFields()) { if (SynchronizedList.class.equals(field.getType())) { SynchronizedList<?> list = (SynchronizedList<?>) field.get(null); if (list != null) { // 将实体类型与列表关联 dataCollectionMap.put(list.getEntityType(), (SynchronizedList<SynchronizableEntity>) list); } } } } catch (IllegalAccessException e) { throw new RuntimeException("初始化dataCollectionMap失败", e); } } // ====================== 核心数据加载方法 ====================== /** * 从服务器加载全量数据 * @param context Android上下文 * @param callback 加载结果回调 */ public static void loadAllData(Context context, LoadDataCallback callback) { // 主线程检查 if (Looper.myLooper() != Looper.getMainLooper()) { throw new IllegalStateException("必须在主线程调用Data.loadAllData"); } ensurePreservedObjects(); // 确保存在预置对象 // 使用传入的 Context 获取主线程 Handler Handler mainHandler = new Handler(context.getMainLooper()); // 确保使用安全的客户端 if (client == null) { client = MyAppFnction.getClient(); } ExecutorService executor = Executors.newSingleThreadExecutor(); executor.execute(() -> { SynchronizableEntity.setSyncEnabled(false); String url = MyAppFnction.getStringResource("string", "url") + MyAppFnction.getStringResource("string", "url_all"); Request request = new Request.Builder().url(url).build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { Log.e(TAG, "Failed to load data", e); SynchronizableEntity.setSyncEnabled(true); mainHandler.post(() -> { if (callback != null) callback.onFailure(); }); } @Override public void onResponse(Call call, Response response) throws IOException { if (!response.isSuccessful()) { Log.e(TAG, "Unexpected response code: " + response.code()); SynchronizableEntity.setSyncEnabled(true); mainHandler.post(() -> { if (callback != null) callback.onFailure(); }); return; } String responseData = response.body().string(); SynchronizableEntity.setSyncEnabled(true); ensurePreservedObjects(); // 在主线程处理解析 mainHandler.post(() -> { parseAndAssignData(responseData, context, callback); }); } }); }); } // ====================== 数据处理私有方法 ====================== /** * 解析JSON数据并更新到实体列表 */ private static void parseAndAssignData(String jsonData, Context context, LoadDataCallback callback) { try { // 解析顶层响应结构 Type responseType = new TypeToken<Information<AllDataResponse>>() {}.getType(); Information<AllDataResponse> info = gson.fromJson(jsonData, responseType); Log.d(TAG, "parseAndAssignData: "+jsonData); // 验证响应有效性 if (info == null || info.getData() == null || info.getStatus() != 200) { throw new IllegalStateException("无效服务器响应"); } AllDataResponse allData = info.getData(); SafeLogger.d("data", "原始数据: " + gson.toJson(allData)); // 更新所有数据列表 updateAllLists(allData); automaticAssociation(); // 建立实体关联 setAllEntitiesState(SynchronizableEntity.SyncState.MODIFIED); // 设置状态 safeCallback(callback, true); // 成功回调 } catch (Exception e) { Log.e(TAG, "数据处理异常: " + e.getMessage()); safeCallback(callback, false); } finally { SynchronizableEntity.setSyncEnabled(true); // 重新启用同步 } } /** * 批量更新所有实体列表 */ private static void updateAllLists(AllDataResponse allData) { updateList(bancais, allData.bancais); updateList(caizhis, allData.caizhis); updateList(mupis, allData.mupis); updateList(chanpins, allData.chanpins); updateList(chanpin_zujians, allData.chanpin_zujians); updateList(dingdans, allData.dingdans); updateList(dingdan_chanpins, allData.dingdan_chanpins); updateList(Dingdan_chanpin_zujians, allData.Dingdan_chanpin_zujians); updateList(kucuns, allData.kucuns); updateList(zujians, allData.zujians); updateList(users, allData.users); updateList(jinhuos, allData.jinhuos); } /** * 安全更新单个列表（保留预置对象） */ private static <T extends SynchronizableEntity> void updateList( List<T> existingList, List<T> newList ) { if (newList == null) return; // 保留现有列表中的预置对象 List<T> preservedItems = existingList.stream() .filter(item -> item != null && item.isPreservedObject()) .collect(Collectors.toList()); // 清空后重新添加（预置对象 + 有效新数据） existingList.clear(); existingList.addAll(preservedItems); existingList.addAll(newList.stream() .filter(item -> item != null && item.getId() != null && item.getId() != -1) .collect(Collectors.toList()) ); } /** * 确保每个列表都有预置对象（用于表示空值/默认值） */ private static void ensurePreservedObjects() { // 为每个实体类型检查并添加预置对象 addIfMissing(bancais, Bancai.class); addIfMissing(caizhis, Caizhi.class); addIfMissing(mupis, Mupi.class); addIfMissing(chanpins, Chanpin.class); addIfMissing(chanpin_zujians, Chanpin_Zujian.class); addIfMissing(dingdans, Dingdan.class); addIfMissing(kucuns, Kucun.class); addIfMissing(zujians, Zujian.class); addIfMissing(Dingdan_chanpin_zujians, Dingdan_chanpin_zujian.class); addIfMissing(dingdan_chanpins, Dingdan_Chanpin.class); addIfMissing(jinhuos, Jinhuo.class); addIfMissing(users, User.class); } private static <T extends SynchronizableEntity> void addIfMissing( List<T> list, Class<T> clazz ) { if (!containsPreservedObject(list)) { list.add(createInstance(clazz)); } } /** * 检查列表是否包含预置对象 * * @param list 目标实体列表 * @return 是否包含预置对象 */ private static <T extends SynchronizableEntity> boolean containsPreservedObject(List<T> list) { return list.stream().anyMatch(item -> item != null && item.isPreservedObject() ); } /** * 自动建立实体间关联关系（通过反射实现） */ private static void automaticAssociation() { for (Class<?> entityClass : dataCollectionMap.keySet()) { try { associateEntities(dataCollectionMap.get(entityClass)); } catch (Exception e) { Log.e(TAG, entityClass.getSimpleName() + " 关联失败", e); } } } private static <T extends SynchronizableEntity> void associateEntities( SynchronizedList<T> list ) throws IllegalAccessException, ClassNotFoundException { for (T entity : list) { if (entity == null) continue; for (Field field : entity.getClass().getDeclaredFields()) { field.setAccessible(true); Class<?> fieldType = field.getType(); // 处理实体引用字段 if (SynchronizableEntity.class.isAssignableFrom(fieldType)) { associateSingleReference(entity, field); } // 处理实体列表字段 else if (List.class.isAssignableFrom(fieldType)) { associateReferenceList(entity, field); } // 处理基础类型字段 else { setDefaultPrimitiveValue(entity, field); } } } } // ====================== 关联辅助方法 ====================== private static void associateSingleReference( SynchronizableEntity entity, Field field ) throws IllegalAccessException { SynchronizableEntity ref = (SynchronizableEntity) field.get(entity); Class<?> targetType = field.getType(); // 查找目标实体 SynchronizableEntity target = findTargetEntity(ref, targetType); field.set(entity, target); } private static void associateReferenceList( SynchronizableEntity entity, Field field ) throws IllegalAccessException, ClassNotFoundException { // 获取列表泛型类型 Type genericType = field.getGenericType(); if (!(genericType instanceof ParameterizedType)) return; Class<?> itemType = Class.forName( ((ParameterizedType) genericType).getActualTypeArguments()[0].getTypeName() ); // 只处理实体列表 if (!SynchronizableEntity.class.isAssignableFrom(itemType)) return; List<SynchronizableEntity> refList = (List<SynchronizableEntity>) field.get(entity); if (refList == null) { refList = new ArrayList<>(); field.set(entity, refList); } // 清理空值并重建引用 refList.removeAll(Collections.singleton(null)); for (int i = 0; i < refList.size(); i++) { refList.set(i, findTargetEntity(refList.get(i), itemType)); } } /** * 查找关联实体（优先匹配ID，找不到则使用预置对象） */ private static SynchronizableEntity findTargetEntity( SynchronizableEntity ref, Class<?> targetType ) { SynchronizedList<SynchronizableEntity> targetList = dataCollectionMap.get(targetType); if (targetList == null) return null; // 无效引用时返回预置对象 if (ref == null || ref.getId() == null || ref.getId() < 0) { return targetList.stream() .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null); } // 按ID查找目标实体 return targetList.stream() .filter(e -> ref.getId().equals(e.getId())) .findFirst() .orElseGet(() -> targetList.stream() // 找不到时回退到预置对象 .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null) ); } // ====================== 工具方法 ====================== /** * 创建带默认值的实体实例（用作预置对象） */ public static <T> T createInstance(Class<T> clazz) { try { T instance = clazz.getDeclaredConstructor().newInstance(); // 设置基础字段默认值 for (Field field : clazz.getDeclaredFields()) { field.setAccessible(true); setDefaultFieldValue(instance, field); } // 设置特殊字段 clazz.getMethod("setId", Integer.class).invoke(instance, -1); clazz.getMethod("setState", SynchronizableEntity.SyncState.class) .invoke(instance, SynchronizableEntity.SyncState.PRESERVED); return instance; } catch (Exception e) { Log.e("Data", "创建实例失败: " + clazz.getName(), e); try { return clazz.newInstance(); // 回退创建 } catch (Exception ex) { throw new RuntimeException("无法创建实例", ex); } } } private static <T> void setDefaultFieldValue(T instance, Field field) throws IllegalAccessException { Class<?> type = field.getType(); if (type == String.class) field.set(instance, "无"); else if (type == Integer.class || type == int.class) field.set(instance, -1); else if (type == Double.class || type == double.class) field.set(instance, -1.0); else if (type == Boolean.class || type == boolean.class) field.set(instance, false); else if (type == Date.class) field.set(instance, new Date()); else if (SynchronizableEntity.class.isAssignableFrom(type)) { field.set(instance, getPreservedEntity((Class<?>) type)); } else if (List.class.isAssignableFrom(type)) { field.set(instance, new ArrayList<>()); } } private static SynchronizableEntity getPreservedEntity(Class<?> type) { return dataCollectionMap.get(type).stream() .filter(SynchronizableEntity::isPreservedObject) .findFirst().orElse(null); } private static void setDefaultPrimitiveValue( SynchronizableEntity entity, Field field ) throws IllegalAccessException { if (field.get(entity) != null) return; Class<?> type = field.getType(); if (type == String.class) field.set(entity, "无"); else if (type == Integer.class || type == int.class) field.set(entity, -1); else if (type == Double.class || type == double.class) field.set(entity, -1.0); else if (type == Boolean.class || type == boolean.class) field.set(entity, false); else if (type == Date.class) field.set(entity, new Date()); } /** * 主线程安全回调 */ private static void safeCallback(LoadDataCallback callback, boolean success) { new Handler(Looper.getMainLooper()).post(() -> { if (callback == null) return; if (success) callback.onSuccess(); else callback.onFailure(); }); } /** * 设置所有实体同步状态 */ private static void setAllEntitiesState(SynchronizableEntity.SyncState state) { dataCollectionMap.values().forEach(list -> list.forEach(entity -> { if (entity != null) entity.setState(state); }) ); } public static String exportToJson() { ExportData exportData = new ExportData(); exportData.bancais = new ArrayList<>(bancais); exportData.caizhis = new ArrayList<>(caizhis); // 初始化其他列表... Gson gson = new GsonBuilder() .setPrettyPrinting() .registerTypeAdapter(SynchronizableEntity.class, new EntitySerializer()) .create(); return gson.toJson(exportData); } public static void importFromJson(String json, Context context) { Gson gson = new GsonBuilder() .registerTypeAdapter(SynchronizableEntity.class, new EntityDeserializer()) .create(); Type exportType = new TypeToken<ExportData>(){}.getType(); ExportData importData = gson.fromJson(json, exportType); // 更新数据列表 updateList(bancais, importData.bancais); updateList(caizhis, importData.caizhis); // 更新其他列表... automaticAssociation(); setAllEntitiesState(SynchronizableEntity.SyncState.MODIFIED); // 保存到SharedPreferences saveToPreferences(context, json); } private static void saveToPreferences(Context context, String json) { SharedPreferences prefs = context.getSharedPreferences("DataStore", Context.MODE_PRIVATE); prefs.edit().putString("jsonData", json).apply(); } public static void loadFromPreferences(Context context) { SharedPreferences prefs = context.getSharedPreferences("DataStore", Context.MODE_PRIVATE); String json = prefs.getString("jsonData", null); if (json != null) { importFromJson(json, context); } } // ====================== 内部类/接口 ====================== public interface LoadDataCallback { void onSuccess(); void onFailure(); } /** JSON响应数据结构 */ public static class AllDataResponse { public List<Bancai> bancais; public List<Caizhi> caizhis; public List<Mupi> mupis; public List<Chanpin> chanpins; public List<Chanpin_Zujian> chanpin_zujians; public List<Dingdan> dingdans; public List<Dingdan_Chanpin> dingdan_chanpins; public List<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians; public List<Kucun> kucuns; public List<Zujian> zujians; public List<User> users; public List<Jinhuo> jinhuos; } // 在Data.java中添加 public static class ExportData { public List<Bancai> bancais; public List<Caizhi> caizhis; public List<Mupi> mupis; public List<Chanpin> chanpins; public List<Chanpin_Zujian> chanpin_zujians; public List<Dingdan> dingdans; public List<Dingdan_Chanpin> dingdan_chanpins; public List<Dingdan_chanpin_zujian> Dingdan_chanpin_zujians; public List<Kucun> kucuns; public List<Zujian> zujians; public List<User> users; public List<Jinhuo> jinhuos; } private static class EntityDeserializer implements JsonDeserializer<SynchronizableEntity> { @Override public SynchronizableEntity deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { JsonObject obj = json.getAsJsonObject(); String entityType = obj.get("entityType").getAsString(); Integer id = obj.get("id").getAsInt(); // 创建临时实体（只包含ID） try { Class<?> clazz = Class.forName("com.example.kucun2.entity." + entityType); SynchronizableEntity entity = (SynchronizableEntity) clazz.newInstance(); entity.setId(id); return entity; } catch (Exception e) { return null; } } } private static class EntitySerializer implements JsonSerializer<SynchronizableEntity> { @Override public JsonElement serialize(SynchronizableEntity src, Type typeOfSrc, JsonSerializationContext context) { JsonObject obj = new JsonObject(); obj.addProperty("id", src.getId()); obj.addProperty("entityType", src.getClass().getSimpleName()); return obj; } } }package com.example.kucun2; import android.os.Bundle; import android.os.Looper; import android.view.View; import android.view.Menu; import com.example.kucun2.entity.data.ApiClient; import com.example.kucun2.entity.data.Data; import com.google.android.material.snackbar.Snackbar; import com.google.android.material.navigation.NavigationView; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import androidx.drawerlayout.widget.DrawerLayout; import androidx.appcompat.app.AppCompatActivity; import com.example.kucun2.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { private AppBarConfiguration mAppBarConfiguration; private ActivityMainBinding binding; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 启动数据加载 loadAppData(); } private void initUI() { if (Looper.myLooper() != Looper.getMainLooper()) { throw new IllegalStateException("Must be called on the main thread"); } ApiClient.init(this); binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); // ... 其他初始化代码 ... setSupportActionBar(binding.appBarMain.toolbar); binding.appBarMain.fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) .setAction("Action", null) .setAnchorView(R.id.fab).show(); } }); DrawerLayout drawer = binding.drawerLayout; NavigationView navigationView = binding.navView; // Passing each menu ID as a set of Ids because each // menu should be considered as top level destinations. mAppBarConfiguration = new AppBarConfiguration.Builder( R.id.nav_home, R.id.nav_kucun, R.id.nav_add_jinhuo, R.id.nav_diandan) .setOpenableLayout(drawer) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration); NavigationUI.setupWithNavController(navigationView, navController); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onSupportNavigateUp() { NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main); return NavigationUI.navigateUp(navController, mAppBarConfiguration) || super.onSupportNavigateUp(); } public interface OnDataLoadListener { void onDataLoaded(); void onDataError(); } private OnDataLoadListener dataLoadListener; public void setOnDataLoadListener(OnDataLoadListener listener) { this.dataLoadListener = listener; } private void loadAppData() { Data.loadAllData(getApplicationContext(), new Data.LoadDataCallback() { @Override public void onSuccess() { runOnUiThread(() -> { if (dataLoadListener != null) { runOnUiThread(dataLoadListener::onDataLoaded); } initUI(); }); } @Override public void onFailure() { runOnUiThread(() -> { if (dataLoadListener != null) { runOnUiThread(dataLoadListener::onDataError); } }); } }); } }

我们遇到了一个问题：每次重启项目时，出现大量的Bindertransactionfailure错误，错误信息为"Operationnotpermitted"，同时还有"ReadingaNULLstringnotsupportedhere"的错误。根据提供的日志，这些错误发生在...
txt

【遥感影像处理】基于Google Earth Engine的S-2影像NDVI计算与时间序列分析：2023年秋季植被指数监测系统实现

内容概要：本文档展示了如何利用Google Earth Engine (GEE) 平台对Sentinel-2卫星图像进行处理与分析。首先创建了2023年9月至10月期间的S-2影像集合，并基于划定的研究区域（aoi）进行了筛选。接着定义了去除云层影响以及计算归一化植被指数（NDVI）的函数，将NDVI作为新波段加入到影像集中。随后提取NDVI数据并构建了中位数值合成图，设置了用于显示NDVI的色彩渐变条。最后，生成了NDVI的时间序列折线图，并将最终结果导出到Google Drive，同时在地图上展示了NDVI的分布情况。 适合人群：具有遥感基础知识、对植被监测感兴趣的科研人员或学生，以及从事地理信息系统工作的专业人士。 使用场景及目标：①研究特定时间段内的植被生长状况变化；②评估不同地区植被覆盖度差异；③为农业、林业等领域提供科学依据和支持。 阅读建议：读者应具备一定的JavaScript编程基础，熟悉Google Earth Engine平台操作，以便更好地理解和应用文中提供的代码示例。由于涉及到具体的地理空间分析任务，建议结合实际案例进行练习，以加深理解。

重刷leetcode

我打算按照下面的方式重新刷题，毕竟经常出现刷了一段时间就忘了。 代码我也打算重新写，并更新代码的完成情况。其它基础知识还没想好怎么处理，毕竟我虽然干了快三年，但是并没有学到啥东西，果然海康的产品开发就是测试和技术支持，layman都能干。 1.两数之和：哈希表 ...
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