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我試圖播放使用黑莓的音頻文件。 這一行 - clickplayer.realize();拋出一個異常 - 「未捕獲的異常:沒有應用程序實例」。我不知道爲什麼這會被拋出?未捕獲的異常:沒有應用程序實例(黑莓)
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
AudioPlayback a = new AudioPlayback();
a.play();
}
});
這是AudioPlayback類 -
public class AudioPlayback {
public void play(){
try {
Player clickplayer = null;
InputStream instream = getClass().getResourceAsStream("/jingle.wav");
clickplayer = Manager.createPlayer(instream, "audio/x-wav");
clickplayer.realize();
clickplayer.setLoopCount(1);
VolumeControl vc = (VolumeControl) clickplayer.getControl("VolumeControl");
if (vc != null)
vc.setLevel(100);
clickplayer.prefetch();
clickplayer.setMediaTime(0);
clickplayer.start();
}
catch(Exception e){
e.printStackTrace();
}
}