屏幕亮度问题

private void setWakeLock(Context context)
{
    PowerManager pm = (PowerManager) context
    .getSystemService(Context.POWER_SERVICE);
    SoundAlarmActivity.WakeLock = pm.newWakeLock(
    PowerManager.FULL_WAKE_LOCK |
        PowerManager.ACQUIRE_CAUSES_WAKEUP
            | PowerManager.ON_AFTER_RELEASE, "BusSnoozeAlarm");
    SoundAlarmActivity.WakeLock.acquire();
}

 我原来是用

private void setWakeLock(Context context)
{
    PowerManager pm = (PowerManager) context
    .getSystemService(Context.POWER_SERVICE);
    SoundAlarmActivity.WakeLock = pm.newWakeLock(
    PowerManager.ACQUIRE_CAUSES_WAKEUP
            | PowerManager.ON_AFTER_RELEASE, "Alarm");
    SoundAlarmActivity.WakeLock.acquire();
}

 

抛异常

 

这里呢要注意一下几个值的含义

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

 貌似

ACQUIRE_CAUSES_WAKEUP和 PARTIAL_WAKE_LOCK 也不能同时用