Mega Code Archive
Using BackgroundAudioServiceBinder
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package app.test;
import android.app.Activity;
import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
class BackgroundAudioService extends Service implements OnCompletionListener {
MediaPlayer mediaPlayer;
public class BackgroundAudioServiceBinder extends Binder {
BackgroundAudioService getService() {
return BackgroundAudioService.this;
}
}
private final IBinder basBinder = new BackgroundAudioServiceBinder();
@Override
public IBinder onBind(Intent intent) {
return basBinder;
}
public void haveFun() {
if (mediaPlayer.isPlaying()) {
mediaPlayer.seekTo(mediaPlayer.getCurrentPosition() - 2500);
}
}
@Override
public void onCreate() {
mediaPlayer = MediaPlayer.create(this, R.raw.test);// raw/test.mp3
mediaPlayer.setOnCompletionListener(this);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.v("PLAYERSERVICE", "onStartCommand");
if (!mediaPlayer.isPlaying()) {
mediaPlayer.start();
}
return START_STICKY;
}
public void onDestroy() {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
mediaPlayer.release();
Log.v("SIMPLESERVICE", "onDestroy");
}
public void onCompletion(MediaPlayer _mediaPlayer) {
stopSelf();
}
}
public class Test extends Activity implements OnClickListener {
private BackgroundAudioService baService;
Button startPlaybackButton, stopPlaybackButton, haveFunButton;
Intent playbackServiceIntent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
startPlaybackButton = (Button) this
.findViewById(R.id.StartPlaybackButton);
stopPlaybackButton = (Button) this
.findViewById(R.id.StopPlaybackButton);
haveFunButton = (Button) this.findViewById(R.id.HaveFunButton);
startPlaybackButton.setOnClickListener(this);
stopPlaybackButton.setOnClickListener(this);
haveFunButton.setOnClickListener(this);
playbackServiceIntent = new Intent(this, BackgroundAudioService.class);
}
public void onClick(View v) {
if (v == startPlaybackButton) {
startService(playbackServiceIntent);
bindService(playbackServiceIntent, serviceConnection,
Context.BIND_AUTO_CREATE);
} else if (v == stopPlaybackButton) {
unbindService(serviceConnection);
stopService(playbackServiceIntent);
} else if (v == haveFunButton) {
baService.haveFun();
}
}
private ServiceConnection serviceConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder baBinder) {
baService = ((BackgroundAudioService.BackgroundAudioServiceBinder) baBinder)
.getService();
}
public void onServiceDisconnected(ComponentName className) {
baService = null;
}
};
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Background Audio Player"
/>
<Button android:text="Start Playback" android:id="@+id/StartPlaybackButton" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Stop Playback" android:id="@+id/StopPlaybackButton" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="Have Fun" android:id="@+id/HaveFunButton" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>
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