MTK Android12 隐藏顶部状态栏

1、解决路径：

	（1）vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
	（2）vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarWindowController.java

2、方法：

（1）在StatusBar.java类的start()中：

        RegisterStatusBarResult result = null;
        try {
            result = mBarService.registerStatusBar(mCommandQueue);
        } catch (RemoteException ex) {
            ex.rethrowFromSystemServer();
        }

        createAndAddWindows(result);
        // add start
		mStatusBarWindowController.setBarVisibility(View.GONE);
		// add end
        if (mWallpaperSupported) {
            // Make sure we always have the most current wallpaper info.
            IntentFilter wallpaperChangedFilter = new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED);
            mBroadcastDispatcher.registerReceiver(mWallpaperChangedReceiver, wallpaperChangedFilter,
                    null /* handler */, UserHandle.ALL);
            mWallpaperChangedReceiver.onReceive(mContext, null);
        } else if (DEBUG) {
            Log.v(TAG, "start(): no wallpaper service ");
        }

（2）在StatusBarWindowController.java类中

public void setBarVisibility(int visibility) {
        mStatusBarView.setVisibility(visibility);
}