Android 13.0 改为平板模式-并且不改变Launcher和SystemUI

介绍

Android 13上是可以根据dpi来判断机器是平板模式还是手机模式，我的设备分辨率是2000x1200,当我们利用 adb shell -> wm density 获取当前dpi然后执行 wm density 320会发现Launcher发生了变化，此时会有布局改变以及锁屏改变，还有hotseat显示不全，导航栏变小靠右等问题，所以我们的思路是在变为平板模式后不要让Launcher和SystemUI改变即可。

改完后我们还需验证下QQ和微信是否为平板模式

修改

ProjectConfig.mk

#density

FREEME_DEVICE_LCD_DENSITY = 320

路径:vendor/mediatek/proprietary/packages/apps/Launcher3/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java

    private void recreateTaskbar() {
        destroyExistingTaskbar();

        DeviceProfile dp =
                mUserUnlocked ? LauncherAppState.getIDP(mContext).getDeviceProfile(mContext) : null;
        //*/soda water.20230906 Tablet mode
        boolean isTaskBarEnabled = false;
        /*/
        boolean isTaskBarEnabled = dp != null && dp.isTaskbarPresent;
        //*/
        if (!isTaskBarEnabled) {
            SystemUiProxy.INSTANCE.get(mContext)
                    .notifyTaskbarStatus(/* visible */ false, /* stashed */ false);
            return;
        }

路径：vendor/mediatek/proprietary/packages/apps/Launcher3/src/com/android/launcher3/util/DisplayController.java

        public boolean isTablet(WindowBounds bounds) {
            //*/soda water.20230906 Tablet mode
            return false;
            /*/
            return smallestSizeDp(bounds) >= MIN_TABLET_WIDTH;
            //*/
        }

路径：vendor/mediatek/proprietary/packages/apps/Launcher3/src/com/android/launcher3/util/window/WindowManagerProxy.java

    public WindowInsets normalizeWindowInsets(Context context, WindowInsets oldInsets,
            Rect outInsets) {
        if (!Utilities.ATLEAST_R || !mTaskbarDrawnInProcess) {
            outInsets.set(oldInsets.getSystemWindowInsetLeft(), oldInsets.getSystemWindowInsetTop(),
                    oldInsets.getSystemWindowInsetRight(), oldInsets.getSystemWindowInsetBottom());
            return oldInsets;
        }

        WindowInsets.Builder insetsBuilder = new WindowInsets.Builder(oldInsets);
        Insets navInsets = oldInsets.getInsets(WindowInsets.Type.navigationBars());

        Resources systemRes = context.getResources();
        Configuration config = systemRes.getConfiguration();
         
        //*/soda water.20230906 Tablet mode
        boolean isTablet = false;
        /*/
        boolean isTablet = config.smallestScreenWidthDp > MIN_TABLET_WIDTH;
        //*/
        boolean isGesture = isGestureNav(context);
        boolean isPortrait = config.screenHeightDp > config.screenWidthDp;
        
        //第二处修改
        Resources systemRes;
        {
            Configuration conf = new Configuration();
            conf.smallestScreenWidthDp = swDp;
            systemRes = context.createConfigurationContext(conf).getResources();
        }
        //*/soda water.20230906 Tablet mode
        boolean isTablet = false;
        /*/
        boolean isTablet = swDp >= MIN_TABLET_WIDTH;
        /*/
        boolean isTabletOrGesture = isTablet
                || (Utilities.ATLEAST_R && isGestureNav(context));

        int statusBarHeightPortrait = getDimenByName(systemRes,
                STATUS_BAR_HEIGHT_PORTRAIT, STATUS_BAR_HEIGHT);
        int statusBarHeightLandscape = getDimenByName(systemRes,
                STATUS_BAR_HEIGHT_LANDSCAPE, STATUS_BAR_HEIGHT);

以上 Launcher3修改是防止 launcher变为平板模式的样式导致显示不全

路径： overlay/vendor/mediatek/proprietary/packages/apps/SystemUI/res/values-sw600dp-port/dimens.xml

修改：下拉栏左右边距问题

    0dp

路径：vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/navigationbar/NavigationBarController.java

        mStatusBarKeyguardViewManager = statusBarKeyguardViewManager;
        mTaskbarDelegate.setDependencies(commandQueue, overviewProxyService,
                navBarHelper, navigationModeController, sysUiFlagsContainer,
                dumpManager, autoHideController, lightBarController, pipOptional,
                backAnimation.orElse(null));
        //*/soda water.20230906 Tablet mode
        mIsTablet = false;
        /*/
        mIsTablet = isTablet(mContext);
        //*/
        dumpManager.registerDumpable(this);
    }

    @Override
    public void onConfigChanged(Configuration newConfig) {
        boolean isOldConfigTablet = mIsTablet;
        //*/soda water.20230906 Tablet mode
        mIsTablet = false;
        /*/
        mIsTablet = isTablet(mContext);
        //*/
        boolean largeScreenChanged = mIsTablet != isOldConfigTablet;
        // If we folded/unfolded while in 3 button, show navbar in folded state, hide in unfolded
        if (largeScreenChanged && updateNavbarForTaskbar()) {
            return;
        }
        
    public void onDisplayReady(int displayId) {
        Display display = mDisplayManager.getDisplay(displayId);
        //*/soda water.20230906 Tablet mode
        mIsTablet = false;
        /*/
        mIsTablet = isTablet(mContext);
        //*/
        createNavigationBar(display, null /* savedState */, null /* result */);
    }

路径：vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java

    private void setNavigationIconHints(int hints) {
        if (hints == mNavigationIconHints) return;
        //*/soda water.20230906 Tablet mode
        if (true) {
        /*/
        if (!isTablet(mContext)) {
        //*/
            // All IME functions handled by launcher via Sysui flags for large screen
            final boolean newBackAlt = (hints & StatusBarManager.NAVIGATION_HINT_BACK_ALT) != 0;
 

路径：vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/recents/ScreenPinningRequest.java

            if (!QuickStepContract.isGesturalMode(mNavBarMode)
                    && wm.hasSoftNavigationBar(mContext.getDisplayId()) /*&& !isTablet(mContext)) soda water.20230906 Tablet mode*/) {
                buttons.setLayoutDirection(View.LAYOUT_DIRECTION_LOCALE);
                swapChildrenIfRtlAndVertical(buttons);
            } 

以上修改防止UI界面变得现实不全 导航栏显示问题
完成后微信会识别成平板模式但QQ不会

路径：build/core/product_config.mk

ifndef PRODUCT_CHARACTERISTICS
  TARGET_AAPT_CHARACTERISTICS := tablet
else
  TARGET_AAPT_CHARACTERISTICS := $(PRODUCT_CHARACTERISTICS)
endif

改完后QQ就会变为平板模式