安卓 开机按power不能休眠，过一段时间才能休眠

参考文章：点击打开链接

PowerManagerService.java

1，原本开机检查开机动画：startWatchingForBootAnimationFinished();在接到开机完成广播后才检查开机动画，把这个方法注释掉

  private final class BootCompletedReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            // This is our early signal that the system thinks it has finished booting.            // However, the boot animation may still be running for a few more seconds            // since it is ultimately in charge of when it terminates.            // Defer transitioning into the boot completed state until the animation exits.            // We do this so that the screen does not start to dim prematurely before            // the user has actually had a chance to interact with the device.           // startWatchingForBootAnimationFinished();        }    }

2，在  public void systemReady(TwilightService twilight, DreamManagerService dreamManager) {
        synchronized (mLock) {
            mSystemReady = true;
            mDreamManager = dreamManager;

.......

            // Go.
            readConfigurationLocked();
            updateSettingsLocked();
            mDirty |= DIRTY_BATTERY_STATE;
            updatePowerStateLocked();
// wdh add
startWatchingForBootAnimationFinished();
        }
    }

结尾处加上这个方法

方法二：归根结底，执行的是handleBootCompletedLocked()这个方法(就是说系统完成启动了)，所以

把上面的startWatchingForBootAnimationFinished();方法换成 handleBootCompletedLocked();方法也可以