As a follow up to this question App Crashing when playing sounds in succession in MediaPlayer
I copied the code from onCreate into another method (named buttonTapped). The app plays the sound correctly during onCreate, but crashes without playing any sounds when the buttonTapped method is called (by tapping a button). The error message is:
unfortunately the application has stopped.
Here is the code, followed by the stack trace
public class MainActivity extends Activity implements MediaPlayer.OnCompletionListener {
int[] tracks = new int[3];
int currentTrack = 0;
private MediaPlayer mediaPlayer = null;
public void buttonTapped(View view){
tracks[0] = R.raw.p46;
tracks[1] = R.raw.p52;
tracks[2] = R.raw.p55;
mediaPlayer = MediaPlayer.create(getApplicationContext(), tracks[currentTrack]);
mediaPlayer.setOnCompletionListener(this);
mediaPlayer.start();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tracks[0] = R.raw.p46;
tracks[1] = R.raw.p52;
tracks[2] = R.raw.p55;
mediaPlayer = MediaPlayer.create(getApplicationContext(), tracks[currentTrack]);
mediaPlayer.setOnCompletionListener(this);
mediaPlayer.start();
}
public void onCompletion(MediaPlayer arg0) {
arg0.release();
currentTrack++;
if (currentTrack < tracks.length) {
arg0 = MediaPlayer.create(getApplicationContext(), tracks[currentTrack]);
arg0.setOnCompletionListener(this);
arg0.start();
}
}
530-530/com.maxd.soundtesting E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.maxd.soundtesting, PID: 530
java.lang.IllegalStateException: Could not execute method of the activity
at android.view.View$1.onClick(View.java:4020)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.view.View$1.onClick(View.java:4015)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=3; index=3
at com.maxd.soundtesting.MainActivity.buttonTapped(MainActivity.java:22)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.view.View$1.onClick(View.java:4015)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
