Develop Reference

setNextMediaPlayer not working

I am trying to find out how to use the android's MediaPlayer method setNextMediaPlayer which should smoothly transition from one player (song) to another. But do not know how to use the method since there is a lack of documentation.
This is what i do and it does not work:
final MediaPlayer mp1 = new MediaPlayer();
final MediaPlayer mp2 = new MediaPlayer();
try {
mp1.setDataSource("http://song1.MP3");
mp2.setDataSource("http://song2.mp3");
mp1.prepareAsync();
mp1.setOnPreparedListener(new OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mp1.start();
}
});
mp1.setNextMediaPlayer(mp2);
mp1.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp2.prepareAsync();
mp2.setOnPreparedListener(new OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mp2.start();
}
});
}
});
} catch (IllegalArgumentException e) {}
So the first song plays. But after it finishes the second does not start.

Got it to work.
mp1.setDataSource(song1);
mp1.prepareAsync();
mp1.setOnPreparedListener(new OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mp1.start();
}
});
//mp1.start();
//mp1.seekTo(1000*100);
mp2.setDataSource(song2);
mp2.prepare();
mp1.setNextMediaPlayer(mp2);
The only problem is that the second mediaplayer cannot be called as async (i.e. mp2.prepareAsync()). I do not know why, but if you try it like that it does not start, which is a bad thing :/.

MediaPlayer setNextMediaPlayer gives a lot of problem what i do is this:
in the onCompletion() reset() the mediaplayer, setDataSource() and prepareAsync().
Something like this
mp1.setDataSource("http://song1.MP3");
mp1.prepareAsync();
mp1.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mp1.start();
}
});
mp1.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp1.reset();
//ADD FLAG FOR STOP
try {
mp1.setDataSource("http://song2.mp3");
} catch (IOException e) {
e.printStackTrace();
}
mp1.prepareAsync();
}
});
Then in the onCompletion you need some flag to check if the last song was played to stop, because the code as i posted will loop in the last song.

How to free memory used by VideoView

I have been having this issue for a while now.
I have a simple application that plays a playlist of videos within a videoview with a pause of a few seconds between them.
private final Runnable playNormalVideo = new Runnable() {
public void run() {
try {
final String filepath = ...;
viewVideo.setOnErrorListener(new OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
onEndVideo(false);
return true;
}
});
viewVideo.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
onEndVideo(false);
}
});
viewVideo.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
background.setVisibility(View.INVISIBLE);
viewVideo.start();
}
});
viewVideo.setVideoPath(filepath);
viewVideo.setVisibility(View.VISIBLE);
viewVideo.requestFocus();
} catch (Exception e) {
String error = Utils.getStackTrace(e);
Utils.log(true, error);
}
}
};
and in my onEndVideo() function I make the background visible and check what video to play next and with a Handler i request to play it after x seconds.
My issue is the following :
Within a long run (approx 1 day) the background becomes invisible within a lot of seconds before the video starts. I don't understand why. If someone could help me get rid of this issue.
I also thought I should free memory between video plays but i don't seem to find how to do that.
Note : All the videos are saved on the device.
Thanks for any help.

mediaplayer with a list of audio that load asynchronously

I have a Music Player application that should play music via online streaming. It has a list of audio titles, and a play button and progress bar. upon clicking on a list item, it executes an asyncTask which loads the datasource in the mediaplayer from url and prepares it.
heres the list item click listener:
leclistv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1,int p, long arg3)
{
url=geturl(p);
new PrepareStream().execute(url);
}
});
the asynctask class:
class PrepareStream extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
progress.show();
}
#Override
protected String doInBackground(String... opath) {
try {
String url = new String(opath[0]);
mp.reset();
mp.setDataSource(url);
mp.prepare();
} catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace();}
return null;
}
protected void onProgressUpdate(String... progress) {
}
#Override
protected void onPostExecute(String file_url) {
btnPlay.setEnabled(true);
songProgressBar.setProgress(0);
songProgressBar.setMax(100);
updateProgressBar();
progress.dismiss();
}
}
BUT this works only once. once when i click on any list item, it loads just fine and plays just fine. but for the second time if i click on any list item, it crashes - because an asyncTask can be used only once. is there any way to make it work each time? if not, is there an alternative way to do this?
P.S: i could do it in a simple way without using asynctask, but i had to use because the audio is loaded from the server so the prepare() takes time and therefore i need to show the progressDialog while its loading.

Simple explanation for media player and how to handle varies problem related to it..reference link
reference code from the above link
public class MyService extends Service implements MediaPlayer.OnPreparedListener {
private static final String ACTION_PLAY = "com.example.action.PLAY";
MediaPlayer mMediaPlayer = null;
public int onStartCommand(Intent intent, int flags, int startId) {
...
if (intent.getAction().equals(ACTION_PLAY)) {
mMediaPlayer = ... // initialize it here
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.prepareAsync(); // prepare async to not block main thread
}
}
/** Called when MediaPlayer is ready */
public void onPrepared(MediaPlayer player) {
//When Media prepare this method work and you start your player
player.start();
}
}

How can i show a ProgressBar when mediaPlayer is prepairing to play

This is the code in my main Activity:
private void initControls()
{
streamButton = (Button) findViewById(R.id.button_stream);
streamButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
loading = (ProgressBar) findViewById(R.id.progressBar1);
Toast
.makeText(
MyActivity.this,
"The following stream is about to start" + station,
Toast.LENGTH_LONG).show();
player.playAudioFile(urlstring2);
streamButton.setEnabled(false);
notificate();
}
});
}
And here is the code in witch i start the mediaplayer itself:
public class player extends MyMainActivity{
static MediaPlayer player;
private static final String TAG = player.class.getSimpleName();
public static void playAudioFile(String urlstring2) {
player = new MediaPlayer();
try {
player.setDataSource(urlstring2);
loading.setVisibility(View.VISIBLE);
player.prepareAsync();
//player.start();
} catch (Throwable thr) {
Log.e(TAG, "could not play audio", thr);
loading.setVisibility(View.INVISIBLE);
}
player.setOnPreparedListener(new OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
player.start();
loading.setVisibility(View.INVISIBLE);
}
});
}
public static void releasePlayer() {
if (player != null) {
// Player-Ressourcen freigeben
player.release();
player = null;
}
}
}
What I want to do is to show the progressBar (the cicling one) when the user presses the "play" Button, and I need it to disapear when the mediaplayer starts to play.
atm I just get the circle to show after the player has startet to play and never disapear ...
Edit: I got it to work.
I did initiate the player like this: player.prepare(); insteas of player.prepareAsync();
So the progressbar was shown for a view milliseconds.

Try this out.
Start the Progress Bar in the button click here like this,
streamButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View view)
{
ProgressDialog progressDialog=null;
progressDialog=ProgressDialog.show(context, "", "Playing...");
Toast
.makeText(
MyActivity.this,
"The following stream is about to start" + station,
Toast.LENGTH_LONG).show();
player.playAudioFile(urlstring2);
streamButton.setEnabled(false);
notificate();
}
});
And you have to override the media player's on Prepared listener, so that you can stop the progress bar within it like this,
Player.setOnPreparedListener(new OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
progressDialog.cancel();
}
});
By this you can achieve to show Progress until your Mediaplayer starts to play the file.

Came back to finally mark this Question as solved, so I copied what I edited into my question previously.
I got it to work. I did initiate the player like this:
player.prepare(); insteas of player.prepareAsync(); So the progressbar
was shown for a view milliseconds.

add the code to hide your ProgressBar after this line:
player.start();
And also in your catch block. That should make it go away once the player is either playing, or failing to play.
If you add the code that you are using to show the ProgressBar now I can help you with how to hide it also.

Android loading animation before VideoView start

I don't find any solution to show a loading animation (or just an imageView) before a VideoView start to play : during the video is buffering.
Does anyone have a clue ?
Thanks.

Or you can just use Progress Dialog;
public class VideoEkrani extends Activity {
VideoView ekran;
String kaynakYolu = "http://commonsware.com/misc/test2.3gp";
ProgressDialog progDailog;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sayfa_video_goruntule);
ekran = (VideoView) findViewById(R.id.videoViewESPU);
ekran.setMediaController(new MediaController(this));
ekran.setVideoURI(Uri.parse(kaynakYolu));
ekran.requestFocus();
ekran.start();
progDailog = ProgressDialog.show(this, "Please wait ...", "Retrieving data ...", true);
ekran.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
progDailog.dismiss();
}
});
}
}

Finally I found the method setOnPreparedListener() on VideoView.
I added a ProgressBar inside my layout, and hide it with the OnPreparedListener

You cant detect the video buffer using OnBufferingUpdateListener on MediaPlayer. If you use VideView set that listener inside OnPreparedListener.
videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
mp.setOnBufferingUpdateListener(new MediaPlayer.OnBufferingUpdateListener() {
#Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
if(percent == 100){
//video have completed buffering
}
}
});
}
});