Develop Reference

Mediaplayer is slow, how to overcome this?

Problem:
I've created a single-radio app with MediaPlayer but prepare() method takes too much time (12-15 Seconds) and as a result when user hits the play button he/she waits for so long.
Is there anything I can do about it(I need to make it faster)? I found Exoplayer but little documentation/tutorials were found about it ;/
To be more specific here is what code I've written (Strings[0] is the URL)
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(strings[0]);
mediaPlayer.prepare();
I am open to any new suggestion or ideas

Stream radio on Android

I'm developing internet radio using android MediaPlayer. I need to update UI when the song is over and new song begins. How to find, that song is over?
This is my current code. mMediaPlayer.start(); calls when user tap the button.
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
try {
mMediaPlayer.setDataSource(streamURL);
mMediaPlayer.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}

Radio streaming is endless so the streaming is never going to end, however if what you can do is track the metadata in the radio streaming for the currently playing song, and if you detect that something has changed, then do something.
Something more important that I want to point is that MediaPlayer is awful slow for radio streaming, I developed a radio streaming app myself so I strongly reccomend you to use this library for this, for two reasons, one is faster and has a bigger buffer than the MediaPlayer (MediaPlayer class has at some point a hardcoded byte[] buffer = new byte[4096]; buffer that'll bring you some issues) and second because this library lets you handle the metadata in a more confortable way.

Set AudioStreamType for an audio file played from Resource (raw folder)

[First App] I am creating a sort of Alarm app that allows user to select alarm sound from either sd-card or app-supplied sounds. Since, the app essentially plays alarms, I want the volume to be 'alarm volume' of the device. I am able to achieve this for sd card sounds. But, I am unable to setAudioStreamType for raw resource sounds.
I am using following code :
MediaPlayer m_player = new MediaPlayer();
m_player.setAudioStreamType(AudioManager.STREAM_ALARM);
switch (bin_name) { //bin_name = various user selectable music files
default:
m_player = MediaPlayer.create(context, R.raw.blu);
break;
}
m_player.setLooping(true);
m_player.start();
My blu.mp3 plays at media volume only. Upon checking the documentation for MediaPlayer.create(Context context, int resid), I found this :
Note that since prepare() is called automatically in this method, you cannot change the audio stream type (see setAudioStreamType(int)), audio session ID (see setAudioSessionId(int)) or audio attributes (see setAudioAttributes(AudioAttributes) of the new MediaPlayer.
I also tried finding code samples for above method but none of them showed how to set AudioStreamType to AudioManager.STEAM_ALARM. I will accept answers with alternative ways that simply play the sound with infinite loop. How to achieve this ?

As the documentation you are referring to says, you must create and prepare the MediaPlayer yourself. Haven't tried with the STREAM_ALARM but I'm using following snippet to play on STREAM_VOICE_CALL
Uri uri = Uri.parse("android.resource://com.example.app/" + R.raw.hdsweep);
MediaPlayer mMediaPlayer = new MediaPlayer();
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_VOICE_CALL);
mMediaPlayer.setDataSource(context, uri);
mMediaPlayer.prepare();
mMediaPlayer.start()

sounds not playing with mediaplayer after playing some sounds

I'm developing an android application which is collection of 100 sound effects.
After I play for instance 25 of the sounds, I can't play anymore and I have to close the application and wait for some minutes then open the application and now I can play other sounds.
final MediaPlayer mp81 = MediaPlayer.create(MainActivity.this, R.raw.a81);
I play the sound using the below code:
mp81.start();
I stop the playing sound using the below code:
mp81.seekTo(0);
I also used stop() method but the problem were still existing.
is there any other method i have to add?

Please note: consider using SoundPool for playing short sounds.
Regarding your use-case: you initialize your MediaPlayer instance using the static create() method which means you create a new MediaPlayer object for each sound instead of reusing an existing instance and just changing the data source. This might negatively affect the performance of your app. I suggest that you create an array of paths to your sounds and then instantiate the MediaPlayer like this:
MediaPlayer mp = new MediaPlayer();
try {
mp.setDataSource(yourArray[x]);
mp.prepare();
mp.start();
} catch(Exception e){
e.printStackTrace();
}
Consult the MediaPlayer Document for more information.

Android playback recorded audio

I've been looking at this example https://stackoverflow.com/a/8974361/1191501 and it works perfectly. But my problem is how do I reference the recorded audio so it can be played back straight away?
the output code is:
recorder.setOutputFile("/sdcard/audio/"+filename);
and this definitely records the audio.
and then to playback the audio, I was using:
player.setDataSource();
but I don't know how to reference the filename bit so it plays back. Any ideas?

I had similar problems playing audio from the SD card at one point. This is what did it for me:
private void playMedia() {
String path = Environment.getExternalStorageDirectory() + "/audio_stuff.mp3";
mediaPlayer = MediaPlayer.create(this, Uri.parse(path));
mediaPlayer.start();
}
Make sure to release your MediaPlayer instance and set it to null when you are done. And just in case, make sure your SD card is not mounted when you try to play your audio file. :)

Looking here,
player.setDataSource("/sdcard/audio/"+filename);
player.prepare();
player.start();
would work I would think.