This is my script:
public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        this.setContentView(R.layout.main);

        Button myButton = (Button)this.findViewById(R.id.my_button);
        myButton.setOnClickListener(new OnClickListener(){
               @Override
               public void onClick(View arg0) {
                    MediaPlayer mp =
MediaPlayer.create(MainActivity.this,
                              R.raw.xd);
                    mp.start();
                    // i.e. react on the end of the music-file:
                    mp.setOnCompletionListener(new
OnCompletionListener(){

                         // @Override
                         public void onCompletion(MediaPlayer arg0) {
                              // File has ended !!! Wink
                         }
                    });
               }
        });
    }
}


but when I click the button in my app the application crashes. Why
does this happen?

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