关机流程实现灭屏和振动同步，灭屏即完成关机流程

2019独角兽企业重金招聘Python工程师标准>>>

目前默认设计，关机会设置一个灭屏时间，不同运营商有不同需求。设置灭屏时间的主要考虑是用户体验关机更快，但实际上灭屏后关机流程还会有一些操作。

如果有需要实现真正关机完成才灭屏振动的体验，可以参照如下修改（灭屏时间延长，用户体验的关机时间延长）

frameworks/base/core/java/com/android/internal/app/ShutdownThread.java：

1．去掉触发灭屏的message

private static void beginShutdownSequence(Context context) {

/**set screen brightness off after shutdownThread start */

//sInstance.mHandler.postDelayed(mDelayDim, screen_turn_off_time); 

//modify shutdown screen off time

}

2.IPO关机振动与灭屏同步

public void running() {

 

if(mShutdownFlow == IPO_SHUTDOWN_FLOW)

   {

    ........

 

delayForPlayAnimation();

 if (sInstance.mScreenWakeLock != null && sInstance.mScreenWakeLock.isHeld()) {

                sInstance.mScreenWakeLock.release();

                sInstance.mScreenWakeLock = null;

            }

 

       //modify shutdown screen off time

       Log.d(TAG, "setBacklightBrightness: Off");

            sInstance.mPowerManager.setBacklightBrightnessOff(true);

 

//modify shutdown screen off time

            //sInstance.mHandler.removeCallbacks(mDelayDim);

            stMgr.shutdown(mContext);

            ......

}

3，正常关机流程振动与灭屏同步

public static void rebootOrShutdown(boolean reboot, String reason) {

              ......

 

delayForPlayAnimation();

                                  

            //modify shutdown screen off time to start

       Log.d(TAG, "setBacklightBrightness: Off");

 if (sInstance.mScreenWakeLock != null && sInstance.mScreenWakeLock.isHeld()) {

                sInstance.mScreenWakeLock.release();

                sInstance.mScreenWakeLock = null;

            }

    sInstance.mPowerManager.setBacklightBrightnessOff(true);

       //modify shutdown screen off time to end

 

      // Shutdown power

               Log.i(TAG, "Performing low-level shutdown...");

   ......

}

 

 

转载于:https://my.oschina.net/poineer/blog/162992