Multiple Activity Application

 MainActivity.java

package com.example.multipleactivityapplication;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

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

        Button secondactivity=(Button) findViewById(R.id.button);
        Button thirdactivity=(Button) findViewById(R.id.button2);
        Button fourthactivity=(Button) findViewById(R.id.button3);

        //set ClickListener for buttons

        secondactivity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //pass Intent to call an Activity
                Intent secondactivityintent=new Intent(MainActivity.this,SecondActivity.class);
                startActivity(secondactivityintent);
            }
        });
        thirdactivity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //pass Intent to call an Activity
                Intent secondactivityintent=new Intent(MainActivity.this,ThirdActivity.class);
                startActivity(secondactivityintent);
            }
        });
       fourthactivity.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //pass Intent to call an Activity
                Intent secondactivityintent=new Intent(MainActivity.this,FourthActivity.class);
                startActivity(secondactivityintent);
            }
        });
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity">


    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Second Activity" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Third Activity" />

    <Button
        android:id="@+id/button3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Fourth Activity" />
</LinearLayout>

SecondActivity.java

package com.example.multipleactivityapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class SecondActivity extends AppCompatActivity {

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

activity_second.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=".SecondActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Welcome to Second Activity"
        android:textSize="34sp" />
</androidx.constraintlayout.widget.ConstraintLayout>

ThirdActivity.java

package com.example.multipleactivityapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class ThirdActivity extends AppCompatActivity {

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

activity_third.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=".ThirdActivity">

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Welcome to Third Activity"
        android:textSize="34sp" />
</androidx.constraintlayout.widget.ConstraintLayout>

FourthActivity.java

package com.example.multipleactivityapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class FourthActivity extends AppCompatActivity {

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

activity_fourth.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=".FourthActivity">

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome to Fourth Activity"
        android:textSize="34sp" />
</androidx.constraintlayout.widget.ConstraintLayout>

Video Links:

https://youtu.be/DLeszVyfRYk

Project links:

https://drive.google.com/file/d/1K7pE7iyKFIvZHl5EU6VH1WKUp6EyynFY/view?usp=sharing