How to Go Back to Previous Activity in Android?
Last Updated :
25 Nov, 2022
In this article, we are going to see how we can add a back button to an activity through which we can go back to its previous activity. This can be achieved with just a few lines of code, which is explained in the steps below
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. The code for that has been given in both Java and Kotlin Programming Language for Android.
Step 2: Working with the activity_main.xml File
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file.
XML
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Next Activity"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
Step 3: Create a New Activity
In the projects folder, right-click on app > new > Activity > Empty Activity. You can customize this activity accordingly.
Step 4: Working with MainActivity File
We now add an onClickListener in the MainActivity to trigger whenever the button is clicked and set up an Intent inside it.
Java
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
// create Button object
Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// give reference to the Button view whose id is button
// and give it to the Button instance created above
button = findViewById(R.id.button);
// setting onClickListener
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// create an intent to switch to second activity upon clicking
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
startActivity(intent);
}
});
}
}
Kotlin
import android.content.Intent
import android.os.Bundle
import android.view.View
import android.widget.Button
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
// create Button object
private lateinit var button: Button
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// give reference to the Button view whose id is button
// and give it to the Button instance created above
button = findViewById(R.id.button)
// set onClickListener
button.setOnClickListener(View.OnClickListener {
// create an intent to switch to second activity upon clicking
val intent = Intent(this, SecondActivity::class.java)
startActivity(intent)
})
}
}
Step 5: Checking AndroidManifest.xml
Navigate to app > manifest > AndroidManifest.xml
Step 6: Check Parent Attribute
Inside Android Manifest File, Check if SecondAcitvity has been added or not, and then add a new attribute of parentActivityName and set it to MainActivity as shown below.
XML
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.gfg.android.gfgapp">
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.GFGApp"
tools:targetApi="31">
<!-- Shall be automatically added after creating new activity.
If not, add the following code snippet -->
<activity
android:name=".SecondActivity"
android:exported="false"
android:parentActivityName=".MainActivity"/>
<!-- till here -->
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Now run the Application. In the second activity, the back button at the top left can be used to go back to the previous activity.
Output:
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