immediately start MediaPlayer and update MediaPlayerControl - android

I want to immediately start playing a sound when the activity is first launched and I want the MediaPlayerControl object to reflect this change. On the code given below the controls will start with play-mode activated instead of pause-mode (since the file is already playing).
public class Guide extends AppCompatActivity implements MediaPlayerControl, MediaPlayer.OnPreparedListener {
private MediaPlayer m_audio_player;
private MediaController m_audio_controller;
private Handler handler = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_guide);
set_up_audio();
}
private void set_up_audio(){
m_audio_player = MediaPlayer.create(this, *SOMESOUNDFILE*);
m_audio_player.setOnPreparedListener(this);
m_audio_controller = new MediaController(this);
}
public void onPrepared(MediaPlayer mediaPlayer) {
m_audio_controller.setMediaPlayer(this);
m_audio_controller.setAnchorView(findViewById(R.id.main_audio_view));
handler.post(new Runnable() {
public void run() {
m_audio_controller.setEnabled(true);
m_audio_controller.show();
m_audio_player.start();
// how do I update m_audio_controller's state here?
}
});
}
}
how can I do this?


I've found the solution. If I call show after first having started the player, it does work.
m_audio_player.start();
m_audio_controller.show();

Related

Can updating an Activity from MediaBrowserService cause the Service to crash?

I have an audio app with a MediaBrowserService. To update the SeekBar in the Activity, I have a Runnable in the service that updates the MediaSession extras every 250 milliseconds (this is to ensure the SeekBar movement isn't janky).
Everything works fine except a small number of users are reporting that after a couple of minutes the playback consistently cuts out. The logs don't show that onDestroy or onPause or onStop of the MediaSessionCompat.Callback is called or any of the error handling. It just stops. However, I'm unable to recreate it myself. Once the audio starts there is nothing running in the service but this. Is it possible updating the SeekBar this way is causing the playback to stop?
public class MediaPlayerService extends MediaBrowserServiceCompat {
private Handler mMediaHandler;
private MediaSessionCompat mMediaSessionCompat;
private ExoPlayer player;
#Override
public void onCreate() {
super.onCreate();
mMediaSessionCompat = new MediaSessionCompat(this, MediaPlayerService.class.getSimpleName());
mMediaSessionCompat.setCallback(mMediaSessionCallback);
}
public void PlayAudio()
{
player = new ExoPlayer.Builder(this).build();
player.setMediaItem(MediaItem.fromUri(uri), position);
player.prepare();
player.play();
mMediaHandler = new Handler(Looper.getMainLooper());
mMediaHandler.post(mUpdateMediaPosition);
}
Runnable mUpdateMediaPosition = new Runnable() {
public void run() {
final Bundle extras = new Bundle();
extras.putInt("position", player.getCurrentPosition());
mMediaSessionCompat.setExtras(extras);
mMediaHandler.postDelayed(this, 250);
}
};
}
public class MediaActivity
{
private MediaBrowserCompat mMediaBrowserCompat;
private MediaControllerCompat mMediaController;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mMediaBrowserCompat = new MediaBrowserCompat(
getApplicationContext(),
new ComponentName(mContext, MediaPlayerService.class),
mMediaBrowserCompatConnectionCallback,
getIntent().getExtras());
mMediaBrowserCompat.connect();
}
MediaControllerCompat.Callback mMediaControllerCompatCallback = new MediaControllerCompat.Callback() {
#Override
public void onExtrasChanged(Bundle extras) {
super.onExtrasChanged(extras);
int position = extras.getInt("position");
seekBar.setProgress(position);
}
}
MediaBrowserCompat.ConnectionCallback mMediaBrowserCompatConnectionCallback = new MediaBrowserCompat.ConnectionCallback() {
#Override
public void onConnected() {
super.onConnected();
mMediaController = new MediaControllerCompat(mContext, mMediaBrowserCompat.getSessionToken());
mMediaController.registerCallback(mMediaControllerCompatCallback);
}
};
}

Answering my own question in case it helps anyone in the future but connecting to a MediaBrowserService does not actually start the service. You have to call startService in the MediaBrowserService (the documentation recommends when playback starts) or the MediaBrowserService will stop when all connections to it disconnect.

how can i stop mediaPlayer in another activity?

hei, can you help me?, i have 2 activity and i want to stop mediaPlayer in another activity, how to use the button in first activity to stop media player in the second activity,
my code in first activity
public class homenor extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_homenor);
Button btmateri = (Button) findViewById(R.id.btmateri);
btmateri.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(homenor.this, home.class);
home.mediaPlayer.stop();
home.mediaPlayer2.stop();
startActivity(intent);
}
});
}
and this code in second activity
public class home extends AppCompatActivity {
int [] sound, soalkuis;
int soundke = 0;
int getNosoal = 0;
public static MediaPlayer mediaPlayer, mediaPlayer2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
sound = new int[] {R.raw.definisiprisma1, R.raw.definisiprisma2, R.raw.definisiprisma3,R.raw.jaringprisma1,R.raw.luasprisma1, R.raw.luasprisma2
,R.raw.luasprisma3,R.raw.luasprisma4,R.raw.luasprisma5,R.raw.luasprisma6,R.raw.contohluasprisma1,R.raw.penyelesaianluasprisma1,R.raw.contohluasprisma2
,R.raw.penyelesaianluasprisma2,R.raw.contohluasprisma3, R.raw.penyelesaianluasprisma3, R.raw.volumeprisma1, R.raw.contohvolume1
, R.raw.penyelesaianvolumeprisma1, R.raw.contohvolume2, R.raw.penyelesaianvolumeprisma2, R.raw.contohvolume3, R.raw.penyelesaianvolumeprisma3
, R.raw.rangkumanprisma1, R.raw.rangkumanprisma2};
soalkuis = new int[] {R.raw.soalprisma1, R.raw.soalprisma2, R.raw.soalprisma3, R.raw.soalprisma4, R.raw.soalprisma5, R.raw.soalprisma6
, R.raw.soalprisma7, R.raw.soalprisma8, R.raw.soalprisma9, R.raw.soalprisma10};
mediaPlayer = new MediaPlayer();
mediaPlayer2 = new MediaPlayer();
mediaPlayer = MediaPlayer.create(home.this, sound[soundke]);
mediaPlayer2 = MediaPlayer.create(home.this, soalkuis[getNosoal]);
mediaPlayer2.setLooping(false);
mediaPlayer.setLooping(false);
mediaPlayer.start();
when i try that, i got error like thisjava.lang.NullPointerException: Attempt to invoke virtual method 'void android.media.MediaPlayer.stop()' on a null object reference
how can i fix that? thank you

create class MyMediaPlayer,
public class MyMediaPlayer {
private static MyMediaPlayer Instance;
MediaPlayer mediaPlayer;
static MyMediaPlayer getMediaPlayerInstance() {
if (Instance == null) {
return Instance = new MyMediaPlayer();
}
return Instance;
}
public void playAudioFile(Context context, int sampleAudio) {
mediaPlayer = MediaPlayer.create(context, sampleAudio);
mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
#Override
public void onPrepared(MediaPlayer mp) {
mp.start();
}
});
}
public void stopAudioFile() {
if (mediaPlayer != null) {
mediaPlayer.stop();
}
}}
Now, Call this method to play audio
MyMediaPlayer.getMediaPlayerInstance().playAudioFile(this, R.raw.sampleaudio)
To Stop Audio, Call this method
MyMediaPlayer.getMediaPlayerInstance().stopAudioFile()

Take the media player as public which you are already taking, then from the second activity, stop the media player like this
try {
mp.reset();
mp.prepareAsync();
mp.stop();
mp.release();
mp = null;
} catch (Exception e) {
e.printStackTrace();
}

my suggestion is to create a class like MediaPlayerManager or ...
create MediaPlayer instance inner this class and implement your interface with your method like pause, play, stop, ...
so, when need action MediaPlayer get instance this class and call suitable method

how can I stop music in one activity and start another music in next activity?

I have 3 activity, when I move from 1st act.to 2nd act. one music will start, and when I move from 2nd act. to 3rd act., 2nd activity's music should stop and 3rd activity's music should start. As per my coding, 2nd activity's music is stopping, but 3rd activity's music does not start. my code is given here-under: please help me.
//1st activity code start
public class MainActivity extends AppCompatActivity {
Button b;
static MediaPlayer mp;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
protected void onResume() {
super.onResume();
final MediaPlayer mp = MediaPlayer.create(this,R.raw.bakaratwozeroone);
b = (Button) findViewById(R.id.butmove);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
mp.start();
startActivity(new Intent(MainActivity.this,Main2Activity.class));
}
});
}
}
//1st activity code end
//2nd activity code start
public class Main2Activity extends AppCompatActivity {
Button b;
static MediaPlayer mp;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
}
#Override
protected void onResume() {
super.onResume();
final MediaPlayer mp = MediaPlayer.create(this, R.raw.mumfive);
b = (Button) findViewById(R.id.butmove2);
b.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
mp.start();
startActivity(new Intent(Main2Activity.this, Main3Activity.class));
}
});
}
#Override
protected void onPause() {
super.onPause();
if(mp !=null);
mp.release();
mp = null;
}
}
//2nd activity code end

No need to keep MediaPlayer instance on every activity, Use BoundService to run media player and make communication with Service and activities.
For reference,use this link
https://github.com/SimpleMobileTools/Simple-Music-Player

Stop audio playback

I am new to Android programming and i have a problem that i can not solve without your help...Please, give me a hand... ;-)
When i start playing my audio file, i can not stop it. Instead, I am quitting the application.
I play audio file with this code:
public class Word1Audio extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.word1video);
MediaPlayer mediaPlayer = MediaPlayer.create(this, R.raw.lige);
mediaPlayer.start();
}
}
HOWEVER, when i try to stop it when the back button is pressed by this piece of code
#Override
public void onBackPressed() {
// do something on back.
return;
}
my applications closes down and audio continues to play...
Do you have an idea why the application closes down? And how can i just stop the music and go back to the previous page...??
Thank you for your time and help... :-)

you could try
MediaPlayer mediaPlayer;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.word1video);
mediaPlayer = MediaPlayer.create(this, R.raw.lige);
mediaPlayer.start();
}
#Override
public void onBackPressed() {
if( mediaPlayer.isPlaying() ) {
mediaPlayer.stop();
}
super.onBackPressed();
}

Android, Can't get MediaPlayer class to work

I would like to add sound to an animation that I have created. Everytime the animation starts, supposedly a sound has to start as well, but I can't manage to start the sound.
All is ok with the animation, here's the code piece:
public class TestActivity extends Activity {
AnimationDrawable anim;
MediaPlayer mp;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
playAnimation(R.id.frameLayout1,R.drawable.anim2,R.raw.bang);
}
public void playAnimation(int FrameLayoutAddress, int animationXMLAdress, int soundAddress)
{
mp = MediaPlayer.create(this.getApplicationContext(), soundAddress);
mp.start(); // error here
FrameLayout imgView = (FrameLayout)findViewById(FrameLayoutAddress);
imgView.setBackgroundResource(animationXMLAdress);
anim = (AnimationDrawable) imgView.getBackground();
imgView.post(new Runnable()
{
#Override
public void run()
{
anim.start();
}
});
}
}
Can anyone point out my mistake ? Thanks in advance for your time.

You should call mp.prepare() before mp.start(). Also it's suggested to reset the MediaPlayer before calling mp.prepare().

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