android GPS+Service例子

package com.xtlh.service.demo; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import com.xtlh.service.db.DBHelper; public class MainActivity extends Activity implements OnClickListener{ private Button btn1,btn2,btn3,btn4; private TextView tv01; private Handler myHandler; private DBHelper db ; MyReceiver receiver; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); System.out.println("start onCreate~~~"); setContentView(R.layout.main); getViews(); db = new DBHelper(this); Bundle bundle = this.getIntent().getExtras(); if(bundle!=null){ double lat = bundle.getDouble("lat"); double lng = bundle.getDouble("lng"); tv01.setText(lat+"-"+lng); } btn1.setOnClickListener(this); btn2.setOnClickListener(this); btn3.setOnClickListener(this); btn4.setOnClickListener(this); } public void getViews(){ btn1 = (Button)findViewById(R.id.btn1); btn2 = (Button)findViewById(R.id.btn2); btn3 = (Button)findViewById(R.id.btn3); btn4 = (Button)findViewById(R.id.btn4); tv01 = (TextView)findViewById(R.id.tv01); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch(v.getId()){ case R.id.btn1: //启动服务 startService(new Intent(MainActivity.this,MyService.class)); break; case R.id.btn2: //解除注册接收器 if(receiver!=null){ MainActivity.this.unregisterReceiver(receiver); } //停止服务 stopService(new Intent(MainActivity.this,MyService.class)); break; case R.id.btn3: startActivity(new Intent(MainActivity.this,GPSListAty.class)); break; case R.id.btn4: db.deleteGPS(); default: break; } } public class MyReceiver extends BroadcastReceiver { //自定义一个广播接收器 @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub System.out.println("OnReceiver"); //判断接受到的广播是否是自己要的广播，如果是，处理接收到的内容,注意这里action的名字要和发送的名字相同，既android.intent.action.test if(intent.getAction().equals("android.intent.action.test")){ Bundle bundle=intent.getExtras(); double lat = bundle.getDouble("lat"); double lng = bundle.getDouble("lng"); tv01.setText(lat+"-"+lng);//设置textview的显示信息为接收到的经纬度信息 } } public MyReceiver(){ System.out.println("MyReceiver"); //构造函数，做一些初始化工作，本例中无任何作用 } } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); System.out.println("start onDestroy~~~"); if(receiver!=null){ MainActivity.this.unregisterReceiver(receiver); } } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); System.out.println("start onPause~~~"); } @Override protected void onRestart() { // TODO Auto-generated method stub super.onRestart(); System.out.println("start onRestart~~~"); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); System.out.println("start onResume~~~"); //注册接收器，之所以把注册接收器写在onResume中，是因为当屏幕翻转后（横屏变竖屏），会调用onDestroy方法。 receiver=new MyReceiver(); IntentFilter filter=new IntentFilter(); filter.addAction("android.intent.action.test"); MainActivity.this.registerReceiver(receiver,filter); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); System.out.println("start onStart~~~"); } @Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); System.out.println("start onStop~~~"); } }