Android background audio with a live audio stream

Android background audio with a live audio stream - android

I have come along in leaps and bound with my first android app in the last three days. This is my last hurdle. How do I get my app to run a background Service that will allow the audio to keep playing? I have tried several examples I could find but they are based on playing a local (or streamed) mp3 file as opposed to a live (Icecast) mp3 stream.
Here's my code currently, everything works except background audio.
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
private ImageButton btn;
private ImageView img;
private boolean playPause;
private MediaPlayer mediaPlayer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = findViewById(R.id.playPause);
img = findViewById(R.id.radioTower);
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
return false;
}
});
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
//mp.start();
}
});
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!playPause) {
if(!mediaPlayer.isPlaying()) {
mediaPlayer.start();
btn.setBackgroundResource(R.drawable.ic_rounded_pause_button);
img.setImageResource(R.drawable.ic_toweron);
img.setAlpha(1.0f);
playPause = true;
}
} else {
if(mediaPlayer.isPlaying()) {
mediaPlayer.pause();
btn.setBackgroundResource(R.drawable.ic_play_button);
img.setImageResource(R.drawable.ic_toweroff);
img.setAlpha(0.3f);
playPause = false;
}
}
}
});
try {
mediaPlayer.setDataSource("http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio2_mf_p");
mediaPlayer.prepareAsync();
} catch (Exception e) {
e.printStackTrace();
}
}
protected void onStop() {
super.onStop();
if (mediaPlayer != null) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
mediaPlayer.release();
mediaPlayer = null;
}
}
#Override
protected void onDestroy() {
super.onDestroy();
if (mediaPlayer != null) {
if (mediaPlayer.isPlaying()) {
mediaPlayer.stop();
}
mediaPlayer.release();
mediaPlayer = null;
}
}
}
Any help would be much appreciated.

use service to play audio file instant of activity.
here is simple code how to use media player in service.
public class MusicService extends Service implements MediaPlayer.OnPreparedListener, MediaPlayer.OnCompletionListener, MediaPlayer.OnErrorListener, MediaPlayer.OnBufferingUpdateListener {
//region "member variable"
boolean isServiceRunning = false;
ArrayList<Song> PlayerList = new ArrayList<>();
MediaPlayer mediaPlayer;
int position = 0;
MainActivity mainActivity;
private final IBinder mBinder = new LocalBinder();
int playingMood;
private final static int MAX_VOLUME = 15;
Toast toast;
public static MusicService objService;
//endregion
//region "service method"
#Override
public void onCreate() {
objService = this;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
try {
isServiceRunning = true;
if (intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION)) {
// showNotification(false);
} else if (intent.getAction().equals(Constants.ACTION.PREV_ACTION)) {
playPrevious();
} else if (intent.getAction().equals(Constants.ACTION.PLAY_ACTION)) {
play();
} else if (intent.getAction().equals(Constants.ACTION.NEXT_ACTION)) {
playNext();
} else if (intent.getAction().equals(
Constants.ACTION.STOPFOREGROUND_ACTION)) {
stop();
stopForeground(true);
stopSelf();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return START_STICKY;
}
#Override
public void onDestroy() {
super.onDestroy();
isServiceRunning = false;
objService = null;
}
#Override
public IBinder onBind(Intent intent) {
return mBinder;
}
//returns the instance of the service
public class LocalBinder extends Binder {
public MusicService getServiceInstance() {
return MusicService.this;
}
}
public void registerClient(MainActivity activity) {
mainActivity = activity;
}
//endregion
//region "Media player"
public void SongRequest() {
try {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
//Handel UI on main activity
mainActivity.showPlayer();
mediaPlayer = new MediaPlayer();
mainActivity.updatePlayerUI();
prepareMediaPlayer(PlayerList.get(position).getUrl());
} catch (Exception ex) {
ex.printStackTrace();
}
}
void showToast(String text) {
if (toast != null)
toast.cancel();
toast = Toast.makeText(App.getContext(), text, Toast.LENGTH_LONG);
toast.show();
}
#Override
public void onPrepared(MediaPlayer mp) {
// try {
mediaPlayer.start();
mainActivity.checkPlaying(true);
} catch (Exception ex) {
ex.printStackTrace();
}
}
#Override
public void onCompletion(MediaPlayer mp) {
try {
mainActivity.sentUpdateBroadcast(true);
if (playingMood == 1) {
mediaPlayer.start();
}
if (playingMood == 2) {
playNext();
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
#Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
if (mainActivity != null)
mainActivity.updateProgressBuffer(percent);
if (percent == 1)
mainActivity.showPlayer();
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
try {
Log.i("MediaPlayer", "error");
} catch (Exception ex) {
ex.printStackTrace();
}
return false;
}
void startPrepare(String url) {
prepareMediaPlayer(url);
}
void prepareMediaPlayer(String url) {
try {
mediaPlayer.setDataSource(url);
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnPreparedListener(MusicService.this);
mediaPlayer.setOnErrorListener(MusicService.this);
mediaPlayer.setOnCompletionListener(MusicService.this);
mediaPlayer.setOnBufferingUpdateListener(MusicService.this);
mediaPlayer.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}
}
//endregion
//region "media player method"
public boolean play() {
if (mediaPlayer != null) {
switchButton();
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
return false;
} else {
mediaPlayer.start();
return true;
}
}
return false;
}
void switchButton() {
mainActivity.checkPlaying(!mediaPlayer.isPlaying());
}
public void stop() {
try {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
isServiceRunning = false;
if (mainActivity != null) {
mainActivity.ShowPlayer(0);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void playNext() {
if (position < PlayerList.size() - 1) {
position++;
mediaPlayer.stop();
SongRequest();
}
}
public void playPrevious() {
if (position > 0) {
position--;
mediaPlayer.stop();
SongRequest();
}
}
public void onError() {
}
public void onCompletion() {
}
public void onCleanMemory() {
}
public void initilizePlayerList(ArrayList<Song> list, int position) {
this.PlayerList = list;
this.position = position;
}
public boolean isplaying() {
return mediaPlayer == null ? false : mediaPlayer.isPlaying();
}
public boolean isRunning() {
return isServiceRunning;
}
public Song getCurrentSong() {
if (PlayerList != null && PlayerList.size() != 0 && PlayerList.size() >= position) {
return PlayerList.get(position);
}
return null;
}
public MediaPlayer getMediaPlayer() {
return mediaPlayer;
}
public void seekTo(int duration) {
if (mediaPlayer != null) {
mediaPlayer.seekTo(duration);
}
}
public int getMood() {
return playingMood;
}
public void setMood(int mood) {
playingMood = mood;
}
public void setVolume(int soundVolume) {
if (mediaPlayer != null) {
final float volume = (float) (1 - (Math.log(MAX_VOLUME - soundVolume) / Math.log(MAX_VOLUME)));
mediaPlayer.setVolume(volume, volume);
}
}
//endregion
}
you can start your service from activity like this.
public void startMusicService() {
Intent serviceIntent = new Intent(MainActivity.this, MusicService.class);
serviceIntent.setAction(Constants.ACTION.STARTFOREGROUND_ACTION);
startService(serviceIntent);
bindService(serviceIntent, mConnection, Context.BIND_AUTO_CREATE);
}
for stop service use this code
public void stopMusicService() {
if (service != null) {
try {
service.stop();
unbindService(mConnection);
stopService(new Intent(MainActivity.this, service.getClass()));
service = null;
} catch (IllegalArgumentException ex) {
stopService(new Intent(MainActivity.this, service.getClass()));
service = null;
ex.printStackTrace();
}
}
}
for bind service with activity use this
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className,
IBinder _service) {
MusicService.LocalBinder binder = (MusicService.LocalBinder) _service;
service = binder.getServiceInstance(); //Get instance of your service!
service.registerClient(MainActivity.this); //Activity register in the service as client for callabcks!
if (listHolder != null) {
initilizeSongsList(listHolder.list, listHolder.position);
}
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
}
};
where service is music service object in activity MusicService service;

So this is the working service for a single live stream URL thanks to asim.
public class StreamService extends Service implements MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener {
public static final String ACTION_PLAY = "com.example.action.PLAY";
private static final String STREAM_URL = "...";
private static final String TEST_URL = "https://www.nasa.gov/mp3/586447main_JFKwechoosemoonspeech.mp3";
MainActivity mainActivity;
MediaPlayer mediaPlayer = null;
WifiManager.WifiLock wifiLock;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
public class LocalBinder extends Binder {
public StreamService getServiceInstance() {
return StreamService.this;
}
}
#Override
public void onCreate() {
super.onCreate();
}
public int onStartCommand(Intent intent, int flags, int startId) {
if (intent.getAction().equals(ACTION_PLAY)) {
mediaPlayer = new MediaPlayer();
mediaPlayer.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
mediaPlayer.setOnErrorListener(this);
mediaPlayer.setOnPreparedListener(this);
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
wifiLock = ((WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE))
.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, "mylock");
wifiLock.acquire();
try {
// Set the stream URL location
mediaPlayer.setDataSource(TEST_URL);
// prepareAsync must be called after setAudioStreamType and setOnPreparedListener
mediaPlayer.prepareAsync();
} catch (Exception e) {
e.printStackTrace();
}
}
return START_STICKY;
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// ... react appropriately ...
// The MediaPlayer has moved to the Error state, must be reset!
return false;
}
void switchButton() {
mainActivity.checkPlaying(!mediaPlayer.isPlaying());
}
public boolean play() {
if (mediaPlayer != null) {
//switchButton();
if (mediaPlayer.isPlaying()) {
mediaPlayer.pause();
return false;
} else {
mediaPlayer.start();
return true;
}
}
return false;
}
public void stop() {
try {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
/** Called when MediaPlayer is ready */
public void onPrepared(MediaPlayer player) {
//player.start();
}
#Override
public void onDestroy() {
super.onDestroy();
if( wifiLock != null) wifiLock.release();
if (mediaPlayer != null) mediaPlayer.release();
}
public void registerClient(MainActivity activity) {
mainActivity = activity;
}
public boolean isplaying() {
return mediaPlayer == null ? false : mediaPlayer.isPlaying();
}
}
Which is implemented in the main activity:
public class MainActivity extends AppCompatActivity {
private ImageButton btn; // Play | Pause toggle button
private ImageView img; // Radio tower image that alternates between on and off
StreamService service;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Bind the view buttons to local variables
btn = findViewById(R.id.playPause);
img = findViewById(R.id.radioTower);
startStream();
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (service.isplaying()) {
Log.d("pause","Pause Playback");
} else {
Log.d("play", "Start Playback");
}
}
});
}
public void startStream() {
Intent serviceIntent = new Intent(MainActivity.this, StreamService.class);
serviceIntent.setAction(StreamService.ACTION_PLAY);
startService(serviceIntent);
bindService(serviceIntent, mConnection, Context.BIND_AUTO_CREATE);
}
public void stopStream() {
if (service != null) {
try {
service.stop();
unbindService(mConnection);
stopService(new Intent(MainActivity.this, service.getClass()));
service = null;
} catch (IllegalArgumentException ex) {
stopService(new Intent(MainActivity.this, service.getClass()));
service = null;
ex.printStackTrace();
}
}
}
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName className,
IBinder _service) {
StreamService.LocalBinder binder = (StreamService.LocalBinder) _service;
service = binder.getServiceInstance(); //Get instance of your service!
service.registerClient(MainActivity.this); //Activity register in the service as client for callabcks!
}
#Override
public void onServiceDisconnected(ComponentName arg0) {
}
};
}
Service starts just fine, I just need to learn how to access the service object to implement the play pause functionality.

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prepareAsynch should be called after setOnPreparedListener, otherwise it may happen that prepareAsynch finished working before the listener is assigned.

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#SuppressLint("NewApi")
#Override
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Hope this helps, and should be a working example although I have not had chance to test it.
public static Music theme;
theme = createMusic("menutheme.mp3");
theme.setLooping(true);
theme.setVolume(0.85f);
theme.play();
public Music createMusic(String filename) {
try {
AssetFileDescriptor assetDescriptor = assets.openFd(filename);
return new AndroidMusic(assetDescriptor);
} catch (IOException e) {
throw new RuntimeException("Couldn't load music '" + filename + "'");
}
}
import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnSeekCompleteListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import com.matt.framework.Music;
import java.io.IOException;
public class AndroidMusic implements Music, OnCompletionListener, OnSeekCompleteListener, OnPreparedListener, OnVideoSizeChangedListener {
MediaPlayer mediaPlayer;
boolean isPrepared = false;
public AndroidMusic(AssetFileDescriptor assetDescriptor) {
mediaPlayer = new MediaPlayer();
try {
mediaPlayer.setDataSource(assetDescriptor.getFileDescriptor(),
assetDescriptor.getStartOffset(),
assetDescriptor.getLength());
mediaPlayer.prepare();
isPrepared = true;
mediaPlayer.setOnCompletionListener(this);
mediaPlayer.setOnSeekCompleteListener(this);
mediaPlayer.setOnPreparedListener(this);
mediaPlayer.setOnVideoSizeChangedListener(this);
} catch (Exception e) {
throw new RuntimeException("Couldn't load music");
}
}
#Override
public void dispose() {
if (this.mediaPlayer.isPlaying()){
this.mediaPlayer.stop();
}
this.mediaPlayer.release();
}
#Override
public boolean isLooping() {
return mediaPlayer.isLooping();
}
#Override
public boolean isPlaying() {
return this.mediaPlayer.isPlaying();
}
#Override
public boolean isStopped() {
return !isPrepared;
}
#Override
public void pause() {
if (this.mediaPlayer.isPlaying())
mediaPlayer.pause();
}
#Override
public void play() {
if (this.mediaPlayer.isPlaying())
return;
try {
synchronized (this) {
if (!isPrepared)
mediaPlayer.prepare();
mediaPlayer.start();
}
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void setLooping(boolean isLooping) {
mediaPlayer.setLooping(isLooping);
}
#Override
public void setVolume(float volume) {
mediaPlayer.setVolume(volume, volume);
}
#Override
public void stop() {
if (this.mediaPlayer.isPlaying() == true){
this.mediaPlayer.stop();
synchronized (this) {
isPrepared = false;
}}
}
#Override
public void onCompletion(MediaPlayer player) {
synchronized (this) {
isPrepared = false;
}
}
#Override
public void seekBegin() {
mediaPlayer.seekTo(0);
}
#Override
public void onPrepared(MediaPlayer player) {
// TODO Auto-generated method stub
synchronized (this) {
isPrepared = true;
}
}
#Override
public void onSeekComplete(MediaPlayer player) {
// TODO Auto-generated method stub
}
#Override
public void onVideoSizeChanged(MediaPlayer player, int width, int height) {
// TODO Auto-generated method stub
}
}

Android Music service in background

I have a problem here, I have a music track works in the background of an app that is never stop and when I add OnDestroy() or Pause() in my main activity class gives me an error when running the application not in the class and I don't know where to put them to control the music in the main !!
here are the codes that gives me an error:
mServ.pauseMusic();
mServ.resumeMusic();
mServ.stopMusic();
The Main Activity:
private boolean mIsBound = false;
private MusicService mServ;
private ServiceConnection Scon = new ServiceConnection(){
public void onServiceConnected(ComponentName name, IBinder binder) {
mServ = ((MusicService.ServiceBinder)binder).getService();
}
public void onServiceDisconnected(ComponentName name) {
mServ = null;
}
};
void doBindService(){
bindService(new Intent(this,MusicService.class),
Scon,Context.BIND_AUTO_CREATE);
mIsBound = true;
}
void doUnbindService()
{
if(mIsBound)
{
unbindService(Scon);
mIsBound = false;
}
}
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent music = new Intent();
music.setClass(this,MusicService.class);
startService(music);
And The Service Activity:
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 {
public MusicService getService()
{
return MusicService.this;
}
}
#Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return mBinder;
}
public void onCreate(){
super.onCreate();
mPlayer = MediaPlayer.create(this, R.raw.la);
mPlayer.setOnErrorListener(this);
if(mPlayer != null){
mPlayer.setLooping(true);
mPlayer.setVolume(100, 100);
}
mPlayer.setOnErrorListener(new OnErrorListener(){
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
onError(mPlayer, what, extra);
return true;
}
});
}
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();
Toast.makeText(this, "Music is Paused", Toast.LENGTH_LONG).show();
}
}
public void resumeMusic()
{
if(mPlayer.isPlaying()==false)
{
mPlayer.seekTo(length);
Toast.makeText(this, "Music is started", Toast.LENGTH_LONG).show();
mPlayer.start();
}
}
public void stopMusic()
{
mPlayer.stop();
Toast.makeText(this, "Music is stoped", Toast.LENGTH_LONG).show();
mPlayer.release();
mPlayer = null;
}
#Override
public void onDestroy ()
{
super.onDestroy();
if(mPlayer != null)
{
try{
mPlayer.stop();
mPlayer.release();
}finally {
mPlayer = null;
}
}
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// TODO Auto-generated method stub
Toast.makeText(this, "Music player failed", Toast.LENGTH_SHORT).show();
if(mPlayer != null)
{
try{
mPlayer.stop();
mPlayer.release();
}finally {
mPlayer = null;
}
}
return false;
}
}
The code is based on this link tutorial

Android back to main activity from MusicService notification

I'm working on a music player for android and i'm stuck at this problem.
By now i can play a song with musicservice and send it to background, i also display a notification with current playing song.
What i need is to re-open the main activity from the song notification and continue playing the song, it actually starts the desired activity but the music service is re-created and it stops the current playing song.
Here is my code.
MusicService.java
public class MusicService extends Service implements
MediaPlayer.OnPreparedListener,
MediaPlayer.OnErrorListener,
MediaPlayer.OnCompletionListener {
private final IBinder musicBind = new MusicBinder();
//media player
private MediaPlayer player;
//song list
private ArrayList<SongModel> songs;
//current position
private int songPosition;
public MusicService() {
}
public void onCreate() {
//create the service
super.onCreate();
//initialize position
songPosition = 0;
//create player
player = new MediaPlayer();
initMusicPlayer();
}
public void initMusicPlayer() {
//set player properties
player.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setOnPreparedListener(this);
player.setOnCompletionListener(this);
player.setOnErrorListener(this);
}
public void setList(ArrayList<SongModel> theSongs) {
songs = theSongs;
}
public class MusicBinder extends Binder {
public MusicService getService() {
return MusicService.this;
}
}
#Override
public IBinder onBind(Intent intent) {
return musicBind;
}
#Override
public boolean onUnbind(Intent intent) {
player.stop();
player.release();
return false;
}
public int getPosition() {
return player.getCurrentPosition();
}
public int getCurrenListPosition() {
return songPosition;
}
public int getDuration() {
return player.getDuration();
}
public boolean isPlaying() {
return player.isPlaying();
}
public void pausePlayer() {
player.pause();
}
public void stopPlayer() {
player.stop();
}
public void seekToPosition(int posn) {
player.seekTo(posn);
}
public void start() {
player.start();
}
public void playSong() {
try {
//play a song
player.reset();
SongModel playSong = songs.get(songPosition);
String trackUrl = playSong.getFileUrl();
player.setDataSource(trackUrl);
player.prepareAsync();
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void onCompletion(MediaPlayer mp) {
if (mp.getCurrentPosition() == 0) {
mp.reset();
}
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
return false;
}
#Override
public void onPrepared(MediaPlayer mp) {
//start playback
mp.start();
SongModel playingSong = songs.get(songPosition);
Intent intent = new Intent(this, NavDrawerMainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentIntent(pendingIntent)
.setSmallIcon(R.drawable.ic_action_playing)
.setTicker(playingSong.getTitle())
.setOngoing(true)
.setContentTitle(playingSong.getTitle())
.setContentText(playingSong.getArtistName());
Notification notification = builder.build();
startForeground((int) playingSong.getSongId(), notification);
}
#Override
public void onDestroy() {
stopForeground(true);
}
public void setSong(int songIndex) {
songPosition = songIndex;
}
}
DiscoverSongsFragment.java
public class DiscoverSongsFragment extends Fragment
implements MediaController.MediaPlayerControl {
JazzyGridView songsContainer;
SongsHelper songsHelper;
SongsAdapter songsAdapter;
ArrayList<SongModel> songsArrayList;
ConnectionState connectionState;
Context mContext;
private static View rootView;
SongModel currentSong;
SeekBar nowPlayingSeekBar;
final Handler handler = new Handler();
// this value contains the song duration in milliseconds.
// Look at getDuration() method in MediaPlayer class
int mediaFileLengthInMilliseconds;
View nowPlayingLayout;
boolean nowPlayingLayoutVisible;
TextView nowPlayingTitle;
TextView nowPlayingArtist;
ImageButton nowPlayingCover;
ImageButton nowPlayingStop;
private MusicService musicService;
private Intent playIntent;
private boolean musicBound = false;
private boolean playbackPaused = false;
private int mCurrentTransitionEffect = JazzyHelper.SLIDE_IN;
public static DiscoverSongsFragment newInstance() {
return new DiscoverSongsFragment();
}
public DiscoverSongsFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_discover_songs, container, false);
mContext = rootView.getContext();
setupViews(rootView);
return rootView;
}
#Override
public void onStart() {
super.onStart();
if (playIntent == null) {
playIntent = new Intent(mContext, MusicService.class);
mContext.bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
mContext.startService(playIntent);
}
}
#Override
public void onResume() {
super.onResume();
if (isPlaying()) {
showNowPlayingLayout();
primarySeekBarProgressUpdater();
}
}
#Override
public void onDestroy() {
mContext.stopService(playIntent);
musicService = null;
super.onDestroy();
}
private void hideNowPlayingLayout() {
nowPlayingLayoutVisible = false;
nowPlayingLayout.setVisibility(View.GONE);
Animation animationFadeIn = AnimationUtils.loadAnimation(mContext, R.anim.fade_out);
nowPlayingLayout.startAnimation(animationFadeIn);
}
private void showNowPlayingLayout() {
nowPlayingLayoutVisible = true;
nowPlayingLayout.setVisibility(View.VISIBLE);
Animation animationFadeIn = AnimationUtils.loadAnimation(mContext, R.anim.fade_in);
nowPlayingLayout.startAnimation(animationFadeIn);
}
private void setupViews(View rootView) {
songsHelper = new SongsHelper();
songsArrayList = new ArrayList<SongModel>();
connectionState = new ConnectionState(mContext);
songsAdapter = new SongsAdapter(mContext, songsArrayList);
nowPlayingLayout = rootView.findViewById(R.id.nowPlayingLayout);
nowPlayingLayout.setVisibility(View.GONE);
nowPlayingLayoutVisible = false;
songsContainer = (JazzyGridView) rootView.findViewById(R.id.songsContainerView);
songsContainer.setTransitionEffect(mCurrentTransitionEffect);
songsContainer.setAdapter(songsAdapter);
songsContainer.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
musicService.setSong(position);
musicService.playSong();
if (playbackPaused) {
playbackPaused = false;
}
currentSong = songsArrayList.get(position);
// gets the song length in milliseconds from URL
mediaFileLengthInMilliseconds = getDuration();
if (currentSong != null) {
nowPlayingTitle.setText(currentSong.getTitle());
nowPlayingArtist.setText(currentSong.getArtistName());
nowPlayingCover.setImageBitmap(currentSong.getCoverArt());
}
primarySeekBarProgressUpdater();
if (!nowPlayingLayoutVisible) {
showNowPlayingLayout();
}
}
});
nowPlayingSeekBar = (SeekBar) rootView.findViewById(R.id.nowPlayingSeekbar);
nowPlayingSeekBar.setMax(99);
nowPlayingTitle = (TextView) rootView.findViewById(R.id.nowPlayingTitle);
nowPlayingArtist = (TextView) rootView.findViewById(R.id.nowPlayingArtist);
nowPlayingStop = (ImageButton) rootView.findViewById(R.id.nowPlayingStop);
nowPlayingStop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (isPlaying()) {
currentSong = null;
playbackPaused = false;
musicService.stopPlayer();
mediaFileLengthInMilliseconds = 0;
nowPlayingSeekBar.setProgress(0);
hideNowPlayingLayout();
}
}
});
nowPlayingCover = (ImageButton) rootView.findViewById(R.id.nowPlayingCover);
nowPlayingCover.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
Intent intent = new Intent(mContext, SongDetailsActivity.class);
intent.putExtra("Title", currentSong.getTitle());
intent.putExtra("Artist", currentSong.getArtistName());
intent.putExtra("Album", currentSong.getAlbumName());
intent.putExtra("Genre", currentSong.getGenre());
intent.putExtra("CoverUrl", currentSong.getCoverArtUrl());
startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
}
});
getSongs();
hideNowPlayingLayout();
}
private void getSongs() {
if (!connectionState.isConnectedToInternet()) {
}
songsAdapter.clear();
String songsUrl = Constants.getAPI_SONGS_URL();
JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(songsUrl, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray jsonArray) {
if (jsonArray != null) {
for (int i = 0; i < jsonArray.length(); i++) {
try {
JSONObject jsonObject = jsonArray.getJSONObject(i);
SongModel song = songsHelper.getSongFromJson(jsonObject);
songsAdapter.add(song);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError volleyError) {
}
});
AppController.getInstance().addToRequestQueue(jsonArrayRequest);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onDetach() {
super.onDetach();
}
/**
* Method which updates the SeekBar primary progress by current song playing position
*/
private void primarySeekBarProgressUpdater() {
nowPlayingSeekBar.setProgress((int) (((float) getCurrentPosition() / getDuration()) * 100));
//if (isPlaying()) {
Runnable runnable = new Runnable() {
public void run() {
primarySeekBarProgressUpdater();
}
};
handler.postDelayed(runnable, 1000);
//}
}
#Override
public void start() {
musicService.start();
}
#Override
public void pause() {
playbackPaused = true;
musicService.pausePlayer();
}
#Override
public int getDuration() {
if (musicService != null && musicBound && musicService.isPlaying()) {
return musicService.getDuration();
}
return 0;
}
#Override
public int getCurrentPosition() {
if (musicService != null && musicBound && musicService.isPlaying()) {
return musicService.getPosition();
}
return 0;
}
public int getCurrentListPosition() {
if (musicService != null && musicBound && musicService.isPlaying()) {
return musicService.getCurrenListPosition();
}
return 0;
}
#Override
public void seekTo(int pos) {
musicService.seekToPosition(pos);
}
#Override
public boolean isPlaying() {
if (musicService != null && musicBound && musicService.isPlaying()) {
return musicService.isPlaying();
}
return false;
}
#Override
public int getBufferPercentage() {
return 0;
}
#Override
public boolean canPause() {
return true;
}
#Override
public boolean canSeekBackward() {
return true;
}
#Override
public boolean canSeekForward() {
return true;
}
#Override
public int getAudioSessionId() {
return 0;
}
//connect to the service
private ServiceConnection musicConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicService.MusicBinder binder = (MusicService.MusicBinder) service;
//get service
musicService = binder.getService();
//pass list
musicService.setList(songsArrayList);
musicBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name) {
musicBound = false;
}
};
}
(The fragment also re-creates itself when navigating through drawer menu items)
I hope somebody can help me achieve this. I dont know how to maintane the state when re-starting the MainActivity (by the way, im using navdrawer to hold fragments)

Include the currently playing song in your notification intent. Update the intent as the song changes. Include the flag to clear top and the flag to update current in the notification intent. :( sorry IDK if I have the flags right for your situation but you'll have a place to do more research.
In your service where you create the notification intent.
// link the notifications to the recorder activity
Intent resultIntent = new Intent(context, KmlReader.class);
resultIntent
.setAction(ServiceLocationRecorder.INTENT_COM_GOSYLVESTER_BESTRIDES_LOCATION_RECORDER);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent resultPendingIntent = PendingIntent
.getActivity(context, 0, resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
return mBuilder.build();
}
Then in main onCreate check the bundle for the name of the currently playing song and display it. Notice how I check for the existence of a bundle key before using it.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
String intentaction = intent.getAction();
// First Run checks
if (savedInstanceState == null) {
// first run init
...
} else {
// get the saved_Instance state
// always get the default when key doesn't exist
// default is null for this example
currentCameraPosition = savedInstanceState
.containsKey(SAVED_INSTANCE_CAMERA_POSITION) ? (CameraPosition) savedInstanceState
.getParcelable(SAVED_INSTANCE_CAMERA_POSITION) : null;
...

Back button not working in Media player

I am able to press the back button when music is not played . But when the music plays and I try to press the back button,it doesn't work. Even on pausing the music, back button not working. Please help what could be the issue. Pasting below a snippet of the code:
Inside MainActivity:
public class MainActivity extends Activity implements MediaPlayerControl {
private ArrayList<Song> songList;
private ListView songView;
private MusicService musicSrv;
private Intent playIntent;
private boolean musicBound = false;
private MusicController controller;
private boolean paused = false, playbackPaused = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
songView = (ListView) findViewById(R.id.lv_song_list);
songList = new ArrayList<Song>();
getSongList();
Collections.sort(songList, new Comparator<Song>() {
#Override
public int compare(Song a, Song b) {
return a.getTitle().compareTo(b.getTitle());
}
});
SongAdapter songAdt = new SongAdapter(this, songList);
songView.setAdapter(songAdt);
setController();
}
// connect to the service
private ServiceConnection musicConnection = new ServiceConnection() {
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
MusicBinder binder = (MusicBinder) service;
// get service
musicSrv = binder.getService();
Log.e("MAIN ACT", "Inside connection");
// pass list
musicSrv.setList(songList);
musicBound = true;
}
#Override
public void onServiceDisconnected(ComponentName name) {
Log.e("MAIN ACT", "Inside disconnection");
musicBound = false;
musicSrv = null;
}
};
#Override
protected void onStart() {
super.onStart();
if (playIntent == null) {
playIntent = new Intent(this, MusicService.class);
bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE);
startService(playIntent);
Log.e("MAIN ACT", "Inside onstart" + musicBound);
}
}
#Override
protected void onDestroy() {
super.onDestroy();
Log.e("MAIN ACT", "Inside ondestroy");
musicSrv = null;
}
public void getSongList() {
// retrieve song info
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null,
null);
if (musicCursor != null && musicCursor.moveToFirst()) {
// get columns
int titleColumn = musicCursor.getColumnIndex(MediaColumns.TITLE);
int idColumn = musicCursor.getColumnIndex(BaseColumns._ID);
int artistColumn = musicCursor.getColumnIndex(AudioColumns.ARTIST);
// add songs to list
do {
long thisId = musicCursor.getLong(idColumn);
String thisTitle = musicCursor.getString(titleColumn);
String thisArtist = musicCursor.getString(artistColumn);
songList.add(new Song(thisId, thisTitle, thisArtist));
} while (musicCursor.moveToNext());
}
}
public void songPicked(View view) {
musicSrv.setSong(Integer.parseInt(view.getTag().toString()));
musicSrv.playSong();
if (playbackPaused) {
setController();
playbackPaused = false;
}
controller.show(0);
Log.d(this.getClass().getName(), "Inside song picked");
}
private void setController() {
// set the controller up
controller = new MusicController(this);
controller.setPrevNextListeners(new View.OnClickListener() {
#Override
public void onClick(View v) {
playNext();
}
}, new View.OnClickListener() {
#Override
public void onClick(View v) {
playPrev();
}
});
controller.setMediaPlayer(this);
controller.setAnchorView(findViewById(R.id.lv_song_list));
controller.setEnabled(true);
}
// play next
private void playNext() {
musicSrv.playNext();
if (playbackPaused) {
setController();
playbackPaused = false;
}
controller.show(0);
}
// play previous
private void playPrev() {
musicSrv.playPrev();
if (playbackPaused) {
setController();
playbackPaused = false;
}
controller.show(0);
}
#Override
protected void onPause() {
super.onPause();
paused = true;
musicSrv.pausePlayer();
}
#Override
protected void onResume() {
super.onResume();
if (paused) {
setController();
paused = false;
}
}
#Override
public void onBackPressed() {
if (musicSrv != null){
super.onBackPressed();
Log.e("MAIN ACT", "Inside onbackpress");
}
}
//
// #Override
// public boolean onKeyDown(int keyCode, KeyEvent event)
// {
// Log.e("MAIN ACT", "Inside onkeydown1");
// if ((keyCode == KeyEvent.KEYCODE_BACK))
// { //Back key pressed
// //Things to Do
// Log.e("MAIN ACT", "Inside onkeydown2");
// if(musicSrv!= null)
// {
// musicSrv.pausePlayer();
// musicSrv=null;
// }
// finish();
// return true;
// }
// return super.onKeyDown(keyCode, event);
// }
#Override
protected void onStop() {
Log.e("MAIN ACT", "Inside onstop");
if (playIntent != null) {
Log.e("MAIN ACT", "Inside onstop1");
unbindService(musicConnection);
musicBound = false;
boolean flagservice = stopService(playIntent);
Log.d("MAIN ACT", "Inside onstop1" + flagservice);
}
controller.hide();
super.onStop();
}
#Override
public void start() {
Log.d(this.getClass().getName(), "START");
musicSrv.go();
}
#Override
public void pause() {
playbackPaused = true;
Log.d(this.getClass().getName(), "PAUSE");
musicSrv.pausePlayer();
}
#Override
public int getDuration() {
if (musicSrv != null && musicBound && musicSrv.isPng())
return musicSrv.getDur();
else
return 0;
}
#Override
public int getCurrentPosition() {
if (musicSrv != null && musicBound && musicSrv.isPng())
return musicSrv.getPosn();
else
return 0;
}
#Override
public void seekTo(int pos) {
musicSrv.seek(pos);
}
#Override
public boolean isPlaying() {
if (musicSrv != null && musicBound) {
Log.e("MAIN ACT", "Inside isplaying");
boolean value = musicSrv.isPng();
return value;
} else
return false;
}
#Override
public int getBufferPercentage() {
// TODO Auto-generated method stub
return 0;
}
#Override
public boolean canPause() {
return true;
}
#Override
public boolean canSeekBackward() {
return true;
}
#Override
public boolean canSeekForward() {
return true;
}
#Override
public int getAudioSessionId() {
return 0;
}
Service Class:
public class MusicService extends Service implements
MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener,
MediaPlayer.OnCompletionListener {
// media player
private MediaPlayer player;
// song list
private ArrayList<Song> songs;
// current position
private int songPosn;
private String songTitle = "";
private static final int NOTIFY_ID = 1;
private boolean shuffle = false;
private Random rand;
private final IBinder musicBind = new MusicBinder();
#Override
public IBinder onBind(Intent intent) {
Log.d(this.getClass().getName(), "BIND");
return musicBind;
}
#Override
public boolean onUnbind(Intent intent) {
Log.d(this.getClass().getName(), "UNBIND");
if (player.isPlaying()) {
player.stop();
player.release();
Log.d(this.getClass().getName(), "UNBIND1");
}
return false;
}
#Override
public void onCreate() {
// create the service
// create the service
super.onCreate();
// initialize position
songPosn = 0;
if (player == null) {
// create player
player = new MediaPlayer();
initMusicPlayer();
}
player.reset();
rand = new Random();
}
public void initMusicPlayer() {
// set player properties
player.setWakeMode(getApplicationContext(),
PowerManager.PARTIAL_WAKE_LOCK);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setOnPreparedListener(this);
player.setOnCompletionListener(this);
player.setOnErrorListener(this);
}
public void setList(ArrayList<Song> theSongs) {
this.songs = theSongs;
}
public class MusicBinder extends Binder {
MusicService getService() {
return MusicService.this;
}
}
public void playSong() {
// play a song
player.reset();
// get song
Song playSong = songs.get(songPosn);
songTitle = playSong.getTitle();
// get id
long currSong = playSong.getId();
// set uri
Uri trackUri = ContentUris.withAppendedId(
android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
currSong);
try {
player.setDataSource(getApplicationContext(), trackUri);
player.prepareAsync();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
Log.e("MUSIC SERVICE", "Error setting data source", e);
}
Log.d("MUSIC SERVICE", "Inside playsong");
}
public void setShuffle() {
if (shuffle)
shuffle = false;
else
shuffle = true;
}
#Override
public void onCompletion(MediaPlayer mp) {
if (player.isPlaying()) {
mp.stop();
mp.release();
}
if (player.getCurrentPosition() < 0) {
mp.reset();
playNext();
}
}
public void setSong(int songIndex) {
this.songPosn = songIndex;
}
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
mp.reset();
Log.e("ERROR", "Inside onError");
return false;
}
#Override
public void onPrepared(MediaPlayer mp) {
if (!player.isPlaying()) {
Log.d(this.getClass().getName(), "ONPREPARE");
try
{
mp.start();
}
catch(IllegalStateException e)
{
e.printStackTrace();
}
}
Intent notIntent = new Intent(this, MainActivity.class);
notIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendInt = PendingIntent.getActivity(this, 0,
notIntent, PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(this);
builder.setContentIntent(pendInt)
.setSmallIcon(R.drawable.play)
.setTicker(songTitle)
.setOngoing(true)
.setContentTitle("Playing")
.setContentText(songTitle);
Notification not = builder.build();
Log.e("MUSIC SERVICE", "Inside prepare");
startForeground(NOTIFY_ID, not);
}
public void stop() {
if (!player.isPlaying()) {
player.stop();
Log.d("MUSIC SERVICE", "Inside stop");
}
}
public int getPosn() {
return player.getCurrentPosition();
}
public int getDur() {
return player.getDuration();
}
public boolean isPng() {
return player.isPlaying();
}
public void pausePlayer() {
if (player.isPlaying()) {
player.pause();
}
}
public void seek(int posn) {
player.seekTo(posn);
}
public void go() {
if (!player.isPlaying()) {
Log.d(this.getClass().getName(), "GO");
player.start();
}
}
public void playPrev() {
songPosn--;
if (songPosn < 0)
songPosn = songs.size() - 1;
playSong();
}
// skip to next
public void playNext() {
songPosn++;
if (songPosn >= songs.size())
songPosn = 0;
playSong();
if (shuffle) {
int newSong = songPosn;
while (newSong == songPosn) {
newSong = rand.nextInt(songs.size());
}
songPosn = newSong;
} else {
songPosn++;
if (songPosn <= songs.size())
songPosn = 0;
}
playSong();
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d(this.getClass().getName(), "ON DESTROY");
stopForeground(true);
if (player != null) {
if (player.isPlaying()) {
player.stop();
}
player.release();
}
}
}
MediaController class:
public class MusicController extends MediaController {
public MusicController(Context c){
super(c);
}
#Override
public void hide(){
Log.d(this.getClass().getName(),"Hide");
super.show();
}
#Override
public void show(int timeout) {
Log.d(this.getClass().getName(),"Show");
super.show(0);
}
#Override
public boolean dispatchKeyEvent(KeyEvent event)
{
int keyCode = event.getKeyCode();
if(keyCode == KeyEvent.KEYCODE_BACK)
{
Log.d(this.getClass().getName(),"DispACH");
super.hide();
Context c = getContext();
((Activity) c).finish();
return true;
}
return super.dispatchKeyEvent(event);
}
}

Why do you want to handle the Back key in onKeyDown . The Activity will taken care of finishing itself when back key is pressed.
Remove the onKeyDown method from Activity if your aim is to handle BACK Key there.
You can stop and release the MediaPlayer Instance in Activity onDestroy
Also, If you need to do any specific work on back press , do it in onBackPressed method before calling super.onBackPressed.
If media controller is visible when music play, you need to handle the KEYCODE_BACK to finish the Activity
Add this in your MusicController class
#Override
public boolean dispatchKeyEvent(KeyEvent event) {
int keyCode = event.getKeyCode();
if(keyCode == KeyEvent.KEYCODE_BACK){
finish();
return true;
}
return super.dispatchKeyEvent(event);
}

#Override
public void onBackPressed() {
// TODO Auto-generated method stub
//release meadia playes here
super.onBackPressed();
}

Develop Reference

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