Intent, Player, Toast(Examples)

				
					NB: To create two or more Activity Page in an Android App - 
 Open an Android application - Right click on Java option(below manifests 
 file) - New - Activity - Empty Views Activity - both the XML and Java 
 files created and appeared.



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:id="@+id/LinLayInteExample" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="50dp" tools:context=".MainActivity">

    <textview android:layout_margintop="200dp" android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Home Page Activity" android:textappearance="@style/TextAppearance.AppCompat.Large" android:textalignment="center"></textview>

    <button android:id="@+id/Button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="50dp" android:text="Go Next to 2nd Page Activity"></button>
</linearlayout>



MainActivity.java
------------------


package com.rkm.myapplication;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {

    Button button1;

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

        button1=(Button) findViewById(R.id.Button1);
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent1= new Intent(MainActivity.this, MainActivity2.class);
                startActivity(intent1);
            }
        });
        

    }
}

===============================================================================

activity_main2.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" android:padding="50dp" tools:context=".MainActivity2">

    <textview android:layout_margintop="200dp" android:id="@+id/textView2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Second Page Activity" android:textappearance="@style/TextAppearance.AppCompat.Large" android:textalignment="center"></textview>

    <button android:id="@+id/Button2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margintop="50dp" android:text="Back to Home Page Activity"></button>

</linearlayout>



MainActivity2.java
--------------------


package com.rkm.myapplication;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity2 extends AppCompatActivity {

    Button button2;

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

        button2=(Button) findViewById(R.id.Button2);
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent2= new Intent(MainActivity2.this, MainActivity.class);
                startActivity(intent2);
            }
        });
        

    }
}

Output: