android电源锁

1.距离感应器用到的电源锁

//距离感应器的电源锁<span style="white-space:pre">WakeLock</span> wakeLock = powerManager.newWakeLock(32, "wakeLock");

2.线控耳机插入时，控制屏幕亮或熄灭的电源锁

<pre name="code" class="java"><span>WakeLock</span> <span style="font-family: Arial, Helvetica, sans-serif;">wakeLock = powerManager.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP |</span><span style="font-family: Arial, Helvetica, sans-serif;">| PowerManager.SCREEN_DIM_WAKE_LOCK, "wakeLock");</span>

3.如设置屏幕2分后锁屏

<pre name="code" class="java"><span>WakeLock</span> <span style="font-family: Arial, Helvetica, sans-serif;">wakeLock = powerManager.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "wakeLock");</span>

wakeLock.acquire(2*60*1000);

4，设备电源锁的两个方法

/*** 获取电源锁，保持该服务在屏幕熄灭时仍然获取CPU时，保持运行*/private void acquireWakeLock() {if (null == wakeLock) {PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK| PowerManager.ON_AFTER_RELEASE, getClass().getCanonicalName());if (null != wakeLock) {Log.i("ysl", "call acquireWakeLock");wakeLock.acquire();}}}/** 释放设备电源锁*/private void releaseWakeLock() {if (null != wakeLock && wakeLock.isHeld()) {Log.i("ysl", "call releaseWakeLock");wakeLock.release();wakeLock = null;}}