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需求：关机和重启按钮点击后，去掉正在关机的动画和tips，改为一张图片实现。
修改点
修改点如下：
涉及到的修改文件
修改：
\vendor\mediatek\proprietary\packages\apps\SystemUI\src\com\android\systemui\globalactionsGlobalActionsDialogLite.java新增：
\vendor\mediatek\proprietary\packages\apps\SystemUI\res\layout\dialog_fullscreen_tip.xml
\vendor\mediatek\proprietary\packages\apps\SystemUI\res\layout-land\dialog_fullscreen_tip.xml
\vendor\mediatek\proprietary\packages\apps\SystemUI\res\drawable-xxhdpi\reboot_fullscreen_port_bg.png
\vendor\mediatek\proprietary\packages\apps\SystemUI\res\drawable-xxhdpi\reboot_fullscreen_land_bg.png备注：drawable 中的reboot_fullscreen_port_bg.png reboot_fullscreen_land_bg.png 图片以客户提供的横竖屏图片为准实现效果如下
mtk Android12 关机、重启 全屏图片显示
代码分析
找到关机相关内容 GlobalActionsLayout.java ->GlobalActionsDialogLite.java->关机的实际操作位置：ShutDownAction
@VisibleForTestingfinal class ShutDownAction extends SinglePressAction implements LongPressAction {ShutDownAction() {super(R.drawable.ic_lock_power_off,R.string.global_action_power_off);}@Overridepublic boolean onLongPress() {mUiEventLogger.log(GlobalActionsEvent.GA_SHUTDOWN_LONG_PRESS);if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_SAFE_BOOT)) {// mWindowManagerFuncs.reboot(true);return true;}return false;}@Overridepublic boolean showDuringKeyguard() {return true;}@Overridepublic boolean showBeforeProvisioning() {return true;}@Overridepublic void onPress() {mUiEventLogger.log(GlobalActionsEvent.GA_SHUTDOWN_PRESS);// shutdown by making sure radio and power are handled accordingly.mWindowManagerFuncs.shutdown();}}
往里层追代码，如下：
- onLongPress()-》 mWindowManagerFuncs.reboot(true); 暂不分析，安全模式逻辑去了
- onPress()->mWindowManagerFuncs.shutdown()->
GlobalActionsComponent shutdown() ->Service shutdown 关机流程
->StatusBarManagerService.java -> reboot方法
retoot 相关源码如下：
/*** Allows the status bar to reboot the device.*/@Overridepublic void reboot(boolean safeMode