Android MediaPlayer Won't Play Different Sounds
- by cYn
I'm making a simple app that plays a different sound according to its orientation. So if it's placed face down, a sound is played. If placed on its left side, a different sound is played. I'm having a hard time manipulating MediaPlayer correctly. My app runs fine. But it will only play one sound.
For example. When I first boot up my app and place my device facing up, a sound will play. If I change its orientation, the sound will pause. But it will not start a different sound in a different orientation. BUT, if I place the device back facing up, it resumes the sound that it paused.
I know I'm doing something wrong here, but I can't seem to figure it out the correct structure in using MediaPlayer and the program constantly calling it through onSensorChanged.
public class MainActivity extends Activity implements SensorEventListener{
MediaPlayer mpAudioAttention;
MediaPlayer mpAudioAssembly;
MediaPlayer mpAudioRecall;
MediaPlayer mpAudioRetreat;
MediaPlayer mpAudioReveille;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sm = (SensorManager) getSystemService(SENSOR_SERVICE);
setContentView(R.layout.main);
mpAudioAttention = MediaPlayer.create(this, R.raw.attention);
mpAudioAssembly = MediaPlayer.create(this, R.raw.assembly);
mpAudioRecall = MediaPlayer.create(this, R.raw.recall);
mpAudioRetreat = MediaPlayer.create(this, R.raw.retreat);
mpAudioReveille = MediaPlayer.create(this, R.raw.reveille);
}
public void onSensorChanged(SensorEvent event) {
synchronized (this) {
Log.d(tag, "onSensorChanged: " + event + ", z: " + event.values[0] + ", x: " + event.values[1] + ", y: " + event.values[2]);
zViewO.setText("Orientation Z: " + event.values[0]);
xViewO.setText("Orientation X: " + event.values[1]);
yViewO.setText("Orientation Y: " + event.values[2]);
}
//face down
if (event.values[2] > -11 && event.values[2] < -9){
mpAudioRetreat.start();
}
else
mpAudioRetreat.pause();
//face up
if (event.values[2] < 11 && event.values[2] > 9){
mpAudioReveille.start();
}
else
mpAudioReveille.pause();
//standing
if (event.values[0] > -10 && event.values[0] < -8){
mpAudioAttention.start();
}
else
mpAudioAttention.pause();
//left sideways
if (event.values[1] < 11 && event.values[1] > 9){
mpAudioAssembly.start();
}
else
mpAudioAssembly.pause();
//right sideways
if (event.values[1] > -11 && event.values[1] < -9){
mpAudioRecall.start();
}
else
mpAudioRecall.pause();
}
