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Android Code for Explicit Intent

In this article, we will learn how to use explicit intent and to move from one activity to another and vice-versa?
Submitted by Shamikh Faraz, on January 19, 2018

Using Explicit Intent, we move from one activity to another activity. Through this intent, information can also be passed from one activity to another.

XML file: (activity_main.xml)

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="com.example.faraz.explicit_intent.MainActivity">

    <Button
        android:id="@+id/Button01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/TextView01"
        android:layout_marginTop="209dp"
        android:onClick="onClick"
        android:text="Go To Other Activity"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:ignore="OnClick" />

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/Button01"
        android:layout_alignParentTop="true"
        android:layout_marginTop="44dp"
        android:minHeight="60dip"
        android:text="This is First Activity"
        android:textSize="20sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

XML file: (activity_other.xml)

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="com.example.faraz.explicit_intent.ActivityTwo">

    <Button
        android:id="@+id/Button01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/TextView01"
        android:layout_marginBottom="212dp"
        android:onClick="onClick"
        android:text="Go to Home Activity"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        tools:ignore="OnClick" />

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/Button02"
        android:layout_alignParentTop="true"
        android:layout_marginEnd="71dp"
        android:layout_marginTop="101dp"
        android:minHeight="60dip"
        android:text="This is Second Activity"
        android:textSize="20sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

Java file: (MainActivity.java)

package com.example.faraz.explicit_intent;
 import android.os.Bundle;  
import android.app.Activity;  
import android.content.Intent;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
public class MainActivity extends Activity {  
Button button1;
    // This code is called when the activity creates. /  
  @Override  
      public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        Button button1=(Button)findViewById(R.id.Button01);  
          
        button1.setOnClickListener(new OnClickListener(){  
         public void onClick(View view) {  
 // Intent is used to move from home activity to other activity  
          Intent intent = new Intent(getApplicationContext(), OtherActivity.class);  
          startActivity(intent);  
         }  
         });  
      }  
    }

Java file: (OtherActivity.java)

package com.example.faraz.explicit_intent;
import android.os.Bundle;  
import android.app.Activity;  
import android.content.Intent;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.Toast;  
public class OtherActivity extends Activity {  
Button button2;

// This code is called when the activity creates. /  
@Override  
public void onCreate(Bundle savedInstanceState) {  
super.onCreate(savedInstanceState);  
setContentView(R.layout.activity_other);  
        Button button2=(Button)findViewById(R.id.Button02);  
          
        button2.setOnClickListener(new View.OnClickListener(){  
     
public void onClick(View view) {  
 // Intent is used to move from other activity to home activity  
          Intent intent = new Intent(getApplicationContext(), MainActivity.class);  
          startActivity(intent);  
         }  
         });  
      }  
    }

Output: After clicking on ‘Go To Other Activity’ button, we will move to second activity and vice-versa