android中关于service耗时同步事件的实现
private final class ServiceHandler extends Handler { public ServiceHandler(Looper looper) { super(looper); } @Override public void handleMessage(Message msg) { processMessage(msg); // NOTE: We MUST not call stopSelf() directly, since we need to // make sure the wake lock acquired by AlertReceiver is released. AlertReceiver.finishStartingService(AlertService.this, msg.arg1); } } @Override public void onCreate() { HandlerThread thread = new HandlerThread("AlertService", Process.THREAD_PRIORITY_BACKGROUND); thread.start(); mServiceLooper = thread.getLooper(); mServiceHandler = new ServiceHandler(mServiceLooper); } @Override public int onStartCommand(Intent intent, int flags, int startId) { if (intent != null) { Message msg = mServiceHandler.obtainMessage(); msg.arg1 = startId; msg.obj = intent.getExtras(); mServiceHandler.sendMessage(msg); } return START_REDELIVER_INTENT; } @Override public void onDestroy() { mServiceLooper.quit(); } @Override public IBinder onBind(Intent intent) { return null; }??