Java tutorial
//package com.java2s; import android.content.Context; import android.os.PowerManager; public class Main { private static PowerManager.WakeLock wakeLock; public static PowerManager.WakeLock acquireLock(Context context) { if (wakeLock == null || !wakeLock.isHeld()) { PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "TT"); wakeLock.setReferenceCounted(true); wakeLock.acquire(); } return wakeLock; } }