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I want to play a sound in an Android app by clicking a Button. But in the emulator the app quites immediately after starting.

public class FullscreenActivity extends Activity {

    private MediaPlayer mediaPlayer = MediaPlayer.create(this.getApplicationContext(), R.raw.sound_file_1);
    ......

    public void playsound(View view){

       mediaPlayer.setLooping(true);
       if(mediaPlayer.isPlaying() ){
           mediaPlayer.pause();
       }
       else{
           mediaPlayer.start();
       }
}

This is the function which is called by this button in the layout-xml:

<Button android:id="@+id/dummy_button"
                style="?buttonBarButtonStyle"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:onClick = "playsound"
                android:text="@string/dummy_button" />

I'm worring the file could not be found, but i don't know why. It is in the folder "projectname/src/main/res/raw/sound_file_1" First, the file had the ending ".mp3", but i deleted it as I thought this could help.

In the device logcat, there is an error message, which says:

09-21 00:00:58.044    2075-2075/com.example.projectname E/Trace﹕ error opening trace file: No such file or directory (2)

thank you for your help!

user2802321
  • 1

0 Answers0