How to open a New Activity on Button Click || Open a New Activity on Button click

Open A New Activity on Button click

Hello friends, in this tutorial we will teach you how to open an activity on button click.

First Create a new activity.

Note :- If you don't know how to create new activity than first real this create a new Activity.

Now Create a Button.

We use Intent for open a new activity on button click.

see the below code :-

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<Relativelayout android:layout_height="match_parent" 
       android:layout_width="match_parent"
       tools:context=".MainActivity"
       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">

    <Button 
          android:id="@+id/btn"
          android:layout_centerinparent="true"
          android:layout_height="wrap_content"
          android:layout_width="wrap_content"
          android:text="Button"/>

</Relativelayout>

Code Image  :- 

MainActivity.java

package com.akshayarora.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button = (Button)findViewById(R.id.btn);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                startActivity(intent);
            }
        });
    }
}

Code Image :-

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".Main2Activity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome"
        android:layout_centerInParent="true"/>

</RelativeLayout>

Code Image :-

Main2Activity.java

package com.akshayarora.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
    }
}

Code Image :-

Output :-

App Run

Now click on Button and see the output like this picture

Enjoy !