How to Get Extra Data From Intent in Android?
Last Updated :
17 Jul, 2022
There are many parts in android applications where we have to pass data from one activity to another activity for performing some data-related operations on it. For passing and retrieving the data there are several different methods such as passing data through bundles and others. In this article, we will take a look at How to get extra data to send from one activity into another activity. A sample video is given below to get an idea about what we are going to do in this article.'
Note: This Android article covered in both Java and Kotlin languages.
Step by Step Implementation
Step 1: Create a New Project in Android Studio
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio.
Step 2: Working with the activity_main.xml file
Navigate to app > res > layout > activity_main.xml and add the below code to it. Comments are added in the code to get to know in detail.
XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/idRLContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<!--on below line we are creating
a text for our app-->
<TextView
android:id="@+id/idTVHeading"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@id/idEdtMsg"
android:layout_centerInParent="true"
android:layout_margin="20dp"
android:gravity="center"
android:padding="10dp"
android:text="Using getExtras() in Android"
android:textAlignment="center"
android:textColor="@color/black"
android:textSize="20sp"
android:textStyle="bold" />
<!--on below line we are creating
edit text for passing data-->
<EditText
android:id="@+id/idEdtMsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@id/idBtnPassData"
android:layout_margin="20dp"
android:hint="Enter your message" />
<!--on below line we are creating a button-->
<Button
android:id="@+id/idBtnPassData"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_margin="20dp"
android:text="Pass Data"
android:textAllCaps="false" />
</RelativeLayout>
Step 3: Creating a new activity
Navigate to app>java>your app's package name>Right click>New>Empty Activity and name it as MainActivity2 and click on finish to create a new activity.
Step 4: Working with the MainActivity file
Navigate to app > java > your app's package name > MainActivity file and add the below code to it. Comments are added in the code to get to know in detail.
Kotlin
package com.gtappdevelopers.kotlingfgproject
import android.content.Intent
import android.os.Bundle
import android.widget.Button
import android.widget.EditText
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
// on below line we are creating a variable.
lateinit var msgEdt: EditText
lateinit var passDataBtn: Button
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// on below line we are initializing our variables.
passDataBtn = findViewById(R.id.idBtnPassData)
msgEdt = findViewById(R.id.idEdtMsg)
// on below line we are adding
// click listener for our button
passDataBtn.setOnClickListener {
// on below line we are getting
// data from edit text
val msg = msgEdt.text.toString()
// on below line we are creating a new
// intent to open a new activity.
val i = Intent(this@MainActivity, MainActivity2::class.java)
// on below line we are passing
// data to our new activity.
i.putExtra("message", msg)
// on below line we are
// starting a new activity.
startActivity(i)
}
}
}
package com.gtappdevelopers.kotlingfgproject;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
// on below line we are creating a variable.
private Button passDataBtn;
private EditText msgEdt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// on below line we are initializing variables with ids.
passDataBtn = findViewById(R.id.idBtnPassData);
msgEdt = findViewById(R.id.idEdtMsg);
// on below line we are adding click listener for our button
passDataBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// on below line we are getting data from edit text
String msg = msgEdt.getText().toString();
// on the below line we are creating a new
// intent to open a new activity.
Intent i = new Intent(MainActivity.this, MainActivity2.class);
// on below line we are passing
// data to our new activity.
i.putExtra("message", msg);
// on below line we are
// starting a new activity.
startActivity(i);
}
});
}
}
Step 5: Working with the activity_main2.xml file
Navigate to app>res>layout>activity_main2.xml and add the code below. Comments are added in the code to get to know in detail.
XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity2">
<!--on below line we are creating
a text for our app-->
<TextView
android:id="@+id/idTVHeading"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@id/idTVMsg"
android:layout_centerInParent="true"
android:layout_margin="20dp"
android:gravity="center"
android:padding="10dp"
android:text="Getting Extra Data on below line"
android:textAlignment="center"
android:textColor="@color/black"
android:textSize="20sp"
android:textStyle="bold" />
<!--on below line we are creating
a text for our app-->
<TextView
android:id="@+id/idTVMsg"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_margin="20dp"
android:gravity="center"
android:padding="10dp"
android:text="Message"
android:textAlignment="center"
android:textColor="@color/black"
android:textSize="20sp"
android:textStyle="bold" />
</RelativeLayout>
Step 6: Working with the MainActivity2 file
Navigate to app > java > your app's package name > MainActivity2 file and add the code below. Comments are added in the code to get to know in detail.
Kotlin
package com.gtappdevelopers.kotlingfgproject
import android.os.Bundle
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
class MainActivity2 : AppCompatActivity() {
// on below line we are creating a variable.
lateinit var msgTV: TextView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main2)
// on below line we are initializing our variable.
msgTV = findViewById(R.id.idTVMsg)
// on below line we are setting our message to our text view.
msgTV.text = intent.extras?.getString("message") ?: "No message found"
}
}
package com.gtappdevelopers.kotlingfgproject;
import android.os.Bundle;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity2 extends AppCompatActivity {
// on the below line we are creating a variable.
private TextView msgTV;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// on below line we are initializing variables with ids.
msgTV = findViewById(R.id.idTVMsg);
// on below line we are setting our message to our text view.
msgTV.setText(getIntent().getStringExtra("message"));
}
}
Now run your application to see the output of it.
Output:
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