Android中通过各种Lock锁对电源进行控制: Flag Value CPU Screen Keyboard PARTIAL_WAKE_LOCK On* Off Off SCREEN_DIM_WAKE_LOCK On Dim Off SCREEN_BRIGHT_WAKE_LOCK On Bright Off FULL_WAKE_LOCK On Bright Bright private static PowerManager.WakeLock mWakeLock; PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE); mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 加锁: mWakeLock.acquire(); 解锁: mWakeLock.release(); 需要注意: 0. WakeLock是activity级的 1. 加锁/解锁必须成对出现 2. 可以多次加锁，同时解锁次数等于加锁次数才能完成解锁 3. 未加锁时进行解锁操作会抛出异常，程序挂掉 可以用下面的方法保证不多次加锁及未加锁时进行解锁: if (!mWakeLock.isHeld()) mWakeLock.acquire(); if (mWakeLock.isHeld()) mWakeLock.release();