android：震动的实现

1. 权限

<uses-permission android:name="android.permission.VIBRATE" />

2. 定义VibratorUtil工具类，震动时间设为50ms。

public class VibratorUtil {


    public static void startVibrate(Activity activity){
        Vibrator vibrator = (Vibrator)activity.getSystemService(Service.VIBRATOR_SERVICE);
        vibrator.vibrate(50);
    }

    public static void stopVibrate(Activity activity){
        Vibrator vibrator = (Vibrator)activity.getSystemService(Service.VIBRATOR_SERVICE);
        vibrator.cancel();
    }

}