Can not play midi file on android

[liuyubupt]

`
private static File sound;
private static Sequence seq;
private static Sequencer midi;

sound = new File(pathname);
seq = MidiSystem.getSequence(sound);
midi= MidiSystem.getSequencer();
midi.open();
midi.setSequence(seq);

if(!midi.isRunning()) {
midi.start();
Log.v("start", "start");
}

`

When I run the above code, there is no sound.
But there's sound on the window.

[saschko04]

Any solution on this? I have a similar problem.