Java tutorial
//package com.java2s; import android.content.Context; import android.os.Vibrator; public class Main { private static Vibrator sVibrator; public static void provideHapticFeedback(Context context) { if (sVibrator == null) sVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE); sVibrator.vibrate(50); } }