Background Music in android game

Hello guys
Today we are learn about how to play audio music in background in your whole android game app  so lets start ..

actvity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.tech.samset.MainActivity">

   <Button
        android:id="@+id/next"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Next" />

</LinearLayout>


MainActvity.java

package com.tech.samset;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.MediaController;

public class MainActivity extends AppCompatActivity {
   
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

findViewById(R.id.next).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                   Intent intent = new Intent(MainActivity.this, SecondActvity.class);
                       startActvity(intent );
                }

        });
       
}

@Override
    protected void onResume() {
        super.onResume();
       MyApplication.getInstance().startService();
       
}

@Override
    protected void onPause() {
        super.onPause();
       MyApplication.getInstance().musicSrv.pauseMusic();
//if you want when you go another activity then your music is pause then you call


       
}
}

SecondActvity.java

public class SecondActvity extends AppCompatActivity {
   
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
       
}

@Override
    protected void onResume() {
        super.onResume();
       MyApplication.getInstance().startService();
     
}
}
}

Mymusic.java

package com.tech.samset;

import android.app.Service;
import android.content.ContentUris;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnErrorListener;
import android.os.Binder;
import android.os.IBinder;
import android.os.PowerManager;
import android.util.Log;
import android.widget.Toast;

public class MusicService extends Service  implements MediaPlayer.OnErrorListener {

private final IBinder mBinder = new ServiceBinder();
MediaPlayer mPlayer;
private int length = 0;

public MusicService() {
}

public class ServiceBinder extends Binder {
MusicService getService() {
return MusicService.this;
}
}

@Override
public IBinder onBind(Intent arg0) {
return mBinder;
}

@Override
public void onCreate() {
super.onCreate();

mPlayer = MediaPlayer.create(this, R.raw.jingle);
mPlayer.setOnErrorListener(this);

if (mPlayer != null) {
mPlayer.setLooping(true);
mPlayer.setVolume(100, 100);
}


mPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {

public boolean onError(MediaPlayer mp, int what, int extra) {

onError(mPlayer, what, extra);
return true;
}
});
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
mPlayer.start();
return START_STICKY;
}

public void pauseMusic() {
if (mPlayer.isPlaying()) {
mPlayer.pause();
length = mPlayer.getCurrentPosition();

}
}

public void resumeMusic() {
if (mPlayer.isPlaying() == false) {
mPlayer.seekTo(length);
mPlayer.start();
}
}

public void stopMusic() {
mPlayer.stop();
mPlayer.release();
mPlayer = null;
}

@Override
public void onDestroy() {
super.onDestroy();
if (mPlayer != null) {
try {
mPlayer.stop();
mPlayer.release();
} finally {
mPlayer = null;
}
}
}

public boolean onError(MediaPlayer mp, int what, int extra) {

Toast.makeText(this, "music player failed", Toast.LENGTH_SHORT).show();
if (mPlayer != null) {
try {
mPlayer.stop();
mPlayer.release();
} finally {
mPlayer = null;
}
}
return false;
}
}

MyApplication.java

public class MyApplication extends Application {
   
    public  Mymusic musicSrv;
    private Intent playIntent;
    private boolean musicBound = false;

public ServiceConnection musicConnection = new ServiceConnection() {

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {

            Mymusic .ServiceBinder binder = (Mymusic .ServiceBinder) service;
            musicSrv = binder.getService();
            musicBound = true;
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            musicBound = false;
        }
    };

public void startService()
    {
        if (playIntent == null) {
            playIntent = new Intent(getApplicationContext(), Mymusic .class);
            bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
            startService(playIntent);
            Log.e("MAin", " intent is null ");
        } else {
            musicSrv.resumeMusic();
            Log.e("MAin", " intent is not null ");
        }
    }
    public void stopService()
    {
        if (playIntent!=null)
        {
            playIntent = new Intent(getApplicationContext(), Mymusic .class);
            unbindService(musicConnection);
            stopService(playIntent);
            musicSrv.stopMusic();
        }
    }

@Override
    public void onCreate() {
        super.onCreate();
   
    }

    public static synchronized MyApplication getInstance() {
        return mInstance;
    }

}
AndroidManifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.tech.samset">

    <application
        android:name=.MyApplication
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
       <activity android:name=".SecondActvity" />
        <service android:name=".MusicService" android:enabled="true" />
    </application>

</manifest>

FullSourcecode 

Thank you