Develop Reference

Android media player playlist and reset

MediaPlayer mediaPlayer = Common.getMediaPlayer();
mediaPlayer.reset();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(this,Uri.parse(url));
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.start();
}
});
mediaPlayer.prepareAsync();
This is the code I have used. I click on some music I play it. If I click another music, it shuts off the old music and plays the new one clicked. However I am thinking if I can do, keep music 1 being played and once that one finishes play music 2.

You'll probably want to maintain a list of songs and register an onCompletionListener to determine when each song finishes. In the onCompletion() callback, you'd pop the next song from the list and play it.
Since you'll eventually have several MediaPlayer listeners, it's probably best to avoid the variable access hassle that comes with anonymous inner classes and just have have your enclosing class implement them.
So you'll the completion listener with:
mediaPlayer.setOnCompletionListener(this);
And add implements OnCompletionListener to your class definition and add a method like the following:
#Override
public void onCompletion(MediaPlayer mp) {
// Pop next song from the list, prepare it, and play it.
}

Add oncomple listener , and have all your music in any array list. Keep rembering the current playing item. When one complete playing play the next in the list.
mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
// play next.
}

MediaPlayer stops working after 30 uses?

I'm trying to write a function to play a short sound (in /res/raw) in my program, called at effectively random times throughout the program. So far I have this function:
public void playSound() {
MediaPlayer mp = new MediaPlayer();
mp = MediaPlayer.create(this, R.raw.ShortBeep);
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
mp.setLooping(false);
mp.start();
}
It works fine for awhile, but after exactly 30 plays of the sound, it stops making sound.

According to the Docs
... failure to call release() may cause subsequent instances of MediaPlayer objects to fallback to software implementations or fail altogether.
When you are done with it call mp.release() so that it can release the resources. I don't know what the limit is and I'm sure it depends on many factors. Either way you should be calling this function on your MediaPlayer object, especially if it will be used more than once.

I've just solved the exact same problem, but I'm using Xamarin. I ended up changing from holding on to a MediaPlayer instance for the lifetime of the activity to creating an instance each time I want to play a sound. I also implemented the IOnPreparedListener and IOnCompletionListener.
Hopefully you can get the idea despite it being C# code
public class ScanBarcodeView :
MvxActivity,
MediaPlayer.IOnPreparedListener,
MediaPlayer.IOnCompletionListener
{
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.ScanBarcodeView);
((ScanBarcodeViewModel) ViewModel).BarcodeScanFailed += (sender, args) => PlaySound(Resource.Raw.fail);
((ScanBarcodeViewModel) ViewModel).DuplicateScan += (sender, args) => PlaySound(Resource.Raw.tryagain);
}
private void PlaySound(int resource)
{
var mp = new MediaPlayer();
mp.SetDataSource(ApplicationContext, Android.Net.Uri.Parse($"android.resource://com.company.appname/{resource}"));
mp.SetOnPreparedListener(this);
mp.SetOnCompletionListener(this);
mp.PrepareAsync();
}
public void OnPrepared(MediaPlayer mp)
{
mp.Start();
}
public void OnCompletion(MediaPlayer mp)
{
mp.Release();
}
}
So, each time I want a sound to be played I create a MediaPlayer instance, so the data source, tell it that my Activity is the listener to Prepared and Completion events and prepare it. Since I'm using PrepareAsync I don't block the UI thread. When the media player is prepared the Start method on the MediaPlayer is called, and when the sound has finished playing the MediaPlayer object is released.
Before I made these changes I would get to 30 sounds played and it would all stop working. Now I've gone way past 30, also multiple sounds can be played simultaneously.
Hope that helps.

how we get end position of a progress bar /seek bar?

i create a audio player and wanna play a audio several times but once it complete 1st time, the progress bar get stuck at the end.i tried to get the last position of progress bar by
boolean atEnd = audioStreamer.getMediaPlayer().getDuration()
- audioStreamer.getMediaPlayer().getCurrentPosition() == 0;
but it gives false every time.
thanks in advance.

You could simply set the OnCompletionListener[1].
audioStreamer.getMediaPlayer().
setOnCompletionListener(
new MediaPlayer.OnCompletionListener() {
public void onCompletion(MediaPlayer mp) {
Log.d("MediaPlayer", "end reached");
}
}
);
[1]
Register a callback to be invoked when the end of a media source has
been reached during playback.

How can stop mediaPlayer which is already running ,and create new mediaPlayer?

I am working in android. I am creating a mediaPlayer which is running audio files. i have 10 buttons. i have assigned different url to each button. So when i press button1 then song of url with respect to button 1 is playing. and then i click on 2nd button then song of button 2 is also playing with song 1. but i want to stop song of button 1 when i press button 2.
this is the code i am using for this functionality:-
public void onClick(View v)
{
MediaPlayer mediaPlayer=new MediaPlayer();
if (mediaPlayer.isPlaying())
{
mediaPlayer.stop();
mediaPlayer.release();
}
int i = Integer.parseInt((v.getTag()).toString());
String str=urls[i];
try {
mediaPlayer.setDataSource(str);
mediaPlayer.prepare();
mediaPlayer.start();
} catch (Exception e)
{
e.printStackTrace();
}
}
please check my code and let me know what is mistake done by me.

you have construct a new MediaPlayer object each time the user click you view
how could it be in the running state !!!
calling release() method on a MediaPlayer object it is in thre End state
Once the MediaPlayer object is in the End state, it can no longer be used and there is no way to bring it back to any other state.
but in case you want to reuse a MediaPlayer object you should call the
call the following method in the same order
reset()
make the mediaPlayer enter the Idle state
setDataSource()
set your data source note : the mediaplayer shoud be in the idle state
prepare()
start()

Play sound file on Timer

I am displaying a Timer on a screen.
The requirement is I need to play a sound every second when the timer duration is 5 seconds remaining & finally when it reaches 0 (end) , I need to play another sound.
I am using the following code:
public void onTick(long millisUntilFinished) {
long timeLeft = secondsRemaining // I am getting the seconds left here
if (timeLeft <= 5) {
playAlertSound(R.raw.beep);
}
else if(timeLeft == 0){
playAlertSound(R.raw.beep1);
}
public void playAlertSound(int sound) {
MediaPlayer mp = MediaPlayer.create(getBaseContext(), sound);
mp.start();
mp.setOnCompletionListener(new OnCompletionListener() {
#Override
public void onCompletion(MediaPlayer mp) {
mp.release();
}
});
The problem I am facing using the above code , though the each beep sound duration is less than 1 second , I am getting a continuation of the sound. I want to have separate beep sound for every second starting from the remaining 5 seconds till it reaches zero.
Also , the volume of the sound is too low.
Kindly provide your inputs , whether I need to follow any other logic ?
Thanks in advance.
Warm Regards,
CB

You should make sure looping is disabled using the setLooping function and for the volume issue, you can set the playback volume using: the setVolume function.
But, for your appliction you may want to look into using the SoundPool class instead of the MediaPlayer because it's more suitable for situations like yours when you want to play the same short sound more than once.
With your sample code, I would also reverse the order of the setting the onCompleteListener and starting playback, like this:
MediaPlayer mp = MediaPlayer.create(getBaseContext(), sound);
// move the mp.start() from here..
mp.setOnCompletionListener(new OnCompletionListener() {
// your handler logic here..
});
// and add the setLooping and setVolume calls here..
mp.setLooping(false);
mp.setVolume(1.0, 1.0);
mp.start(); // to here..

I tried this code without the OnCompletionListener, and it worked fine with no looping? I guess I'm not understanding your problem. Also... setVolume(1.0,1.0) isn't correct, you need (float,float) not doubles.