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POHow to resume activity with audio in Android?
 

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  1. POHow to resume activity with audio in Android?
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    <p>I have implemented media player. I have only one Activity. When I'm starting the activity, my music starts to play and when I press the back button the music clip is in pause state, and again when I resume my activity, the music resumes properly. But there is error after I try to resume my Application after song got over. The app crashed, and I'm getting exception for <code>IllegalStateException</code> in back-press method( <code>mp.pause();</code>). </p> <p>Please have a look at below code and suggest if I am doing something wrong. </p> <pre><code>public class Audio_Activity extends Activity { private MediaPlayer mp; Button btnStartStop ; int length; SharedPreferences prefs; ImageView imgVw; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.audio); init(); imgVw.setImageResource(R.raw.teddy_two); prefs = PreferenceManager.getDefaultSharedPreferences(this); mp=MediaPlayer.create(Audio_Activity.this,R.raw.ennamo_yadho); Log.e("Song is playing","in Mediya Player "); Log.e("Current ","Position -&gt; " + length); mp.setLooping(false); mp.start(); btnChapter.setEnabled(false); mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { // TODO Auto-generated method stub mp.stop(); mp.release(); btnChapter.setEnabled(true); System.out.println("Music is over and Button is enable !!!!!!"); } }); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Checks the orientation of the screen if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) { Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show(); } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){ Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show(); } } @Override public void onPause() { super.onStop(); SharedPreferences. Editor prefsEdit = prefs.edit(); int position = mp.getCurrentPosition(); prefsEdit.putInt("mediaPosition", position); prefsEdit.commit(); } @Override protected void onResume() { super.onResume(); System.out.println("Activity is Resume !!!"); int position = prefs.getInt("mediaPosition", 0); mp.seekTo(position); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK)) { if(mp!= null) { f(mp.isPlaying()) { mp.pause(); } } finish(); return true; } return super.onKeyDown(keyCode, event); } } </code></pre> <p>Here is my Log Cat </p> <pre><code>07-09 11:52:01.057: I/System.out(6854): Music is over and Button is enable !!!!!! 07-09 11:52:03.297: D/AndroidRuntime(6854): Shutting down VM 07-09 11:52:03.297: W/dalvikvm(6854): threadid=1: thread exiting with uncaught exception (group=0x40a71930) 07-09 11:52:03.339: E/AndroidRuntime(6854): FATAL EXCEPTION: main 07-09 11:52:03.339: E/AndroidRuntime(6854): java.lang.IllegalStateException 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.media.MediaPlayer.isPlaying(Native Method) 07-09 11:52:03.339: E/AndroidRuntime(6854): at com.audio_demo.Audio_Activity.onKeyDown(Audio_Activity.java:203) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.view.KeyEvent.dispatch(KeyEvent.java:2609) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.app.Activity.dispatchKeyEvent(Activity.java:2375) 07-09 11:52:03.339: E/AndroidRuntime(6854): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1847) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3701) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.view.ViewRootImpl.handleImeFinishedEvent(ViewRootImpl.java:3651) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:2818) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.os.Handler.dispatchMessage(Handler.java:99) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.os.Looper.loop(Looper.java:137) 07-09 11:52:03.339: E/AndroidRuntime(6854): at android.app.ActivityThread.main(ActivityThread.java:5041) 07-09 11:52:03.339: E/AndroidRuntime(6854): at java.lang.reflect.Method.invokeNative(Native Method) 07-09 11:52:03.339: E/AndroidRuntime(6854): at java.lang.reflect.Method.invoke(Method.java:511) 07-09 11:52:03.339: E/AndroidRuntime(6854): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 07-09 11:52:03.339: E/AndroidRuntime(6854): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 07-09 11:52:03.339: E/AndroidRuntime(6854): at dalvik.system.NativeStart.main(Native Method) 07-09 11:52:28.787: I/Process(6854): Sending signal. PID: 6854 SIG: 9 </code></pre>
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    1. COA single blank line of white space in source code is *always* enough!
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      1. POHow to resume activity with audio in Android?
      1. USAndrew Thompson
    2. COI'm not sure if you're saying the error is in `onBackPressed` or `onResume`, but try putting your `mp.pause()` in `onPause()` and `mp.start()` in `onResume()`
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      1. POHow to resume activity with audio in Android?
      1. USKen Wolf
    3. COdo you have play/pause button?(do you handle play/pause of song on any button? )
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      1. USdd619
 

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