Implementation code of android vibration and prompt tone

android message prompt (vibration and prompt tone), the implementation code is as follows:

public class VibratorUtil {
  protected AudioManager audioManager;
  protected Vibrator vibrator;
  private Ringtone ringtone;
  private static final int MIN_TIME_OUT = 4000; // Time interval 
  long lastNotificationTime;
  public VibratorUtil() {
    audioManager = (AudioManager) MyApp.getContext().getSystemService(Context.AUDIO_SERVICE); // This method is defined by the Context Called 
    vibrator = (Vibrator) MyApp.getContext().getSystemService(Context.VIBRATOR_SERVICE); // Ibid. 
  }
  /**
   *  Turn on the mobile phone vibration and play system prompt ringtone 
   */
  public void vibrateAndPlayTone() {
    if (System.currentTimeMillis() - lastNotificationTime < MIN_TIME_OUT) {
      return;
    }
    try {
      lastNotificationTime = System.currentTimeMillis();
      if (audioManager.getRingerMode() == AudioManager.RINGER_MODE_SILENT) {
        return;
      }
      long[] pattern = new long[]{0, 180, 80, 120};
      vibrator.vibrate(pattern, -1); // Vibration 
      if (ringtone == null) {
        Uri notificationUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        ringtone = RingtoneManager.getRingtone(MyApp.getContext(), notificationUri);
        if (ringtone == null) {
          return;
        }
      }
      if (!ringtone.isPlaying()) {
        ringtone.play();
        // Judge the brand of mobile phone 
        String vendor = Build.MANUFACTURER;
        if (vendor != null && vendor.toLowerCase().contains("samsung")) {
          Thread ctlThread = new Thread() {
            public void run() {
              try {
                Thread.sleep(3000);
                if (ringtone.isPlaying()) {
                  ringtone.stop();
                }
              } catch (Exception e) {
              }
            }
          };
          ctlThread.run();
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

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