/**
 * Use System Apis to update all existing resources.
 * <br/>
 * 1. Update ApplicationInfo.splitSourceDirs and LoadedApk.mSplitResDirs
 * <br/>
 * 2. Replace all keys of ResourcesManager.mResourceImpls to new ResourcesKey
 * <br/>
 * 3. Use ResourcesManager.appendLibAssetForMainAssetPath(appInfo.publicSourceDir, "${packageName}.vastub") to update all existing resources.
 * <br/>
 *
 * see android.webkit.WebViewDelegate.addWebViewAssetPath(Context)
 */
@TargetApi(Build.VERSION_CODES.N)
private static Resources createResourcesForN(Context context, String packageName, File apk) throws Exception {
    long startTime = System.currentTimeMillis();
    String newAssetPath = apk.getAbsolutePath();
    ApplicationInfo info = context.getApplicationInfo();
    String baseResDir = info.publicSourceDir;
    
    info.splitSourceDirs = append(info.splitSourceDirs, newAssetPath);
    LoadedApk loadedApk = Reflector.with(context).field("mPackageInfo").get();

    Reflector rLoadedApk = Reflector.with(loadedApk).field("mSplitResDirs");
    String[] splitResDirs = rLoadedApk.get();
    rLoadedApk.set(append(splitResDirs, newAssetPath));

    final android.app.ResourcesManager resourcesManager = android.app.ResourcesManager.getInstance();
    ArrayMap<ResourcesKey, WeakReference<ResourcesImpl>> originalMap = Reflector.with(resourcesManager).field("mResourceImpls").get();

    synchronized (resourcesManager) {
        HashMap<ResourcesKey, WeakReference<ResourcesImpl>> resolvedMap = new HashMap<>();

        if (Build.VERSION.SDK_INT >= 28
            || (Build.VERSION.SDK_INT == 27 && Build.VERSION.PREVIEW_SDK_INT != 0)) { // P Preview
            ResourcesManagerCompatForP.resolveResourcesImplMap(originalMap, resolvedMap, context, loadedApk);

        } else {
            ResourcesManagerCompatForN.resolveResourcesImplMap(originalMap, resolvedMap, baseResDir, newAssetPath);
        }

        originalMap.clear();
        originalMap.putAll(resolvedMap);
    }

    android.app.ResourcesManager.getInstance().appendLibAssetForMainAssetPath(baseResDir, packageName + ".vastub");

    Resources newResources = context.getResources();

    // lastly, sync all LoadedPlugin to newResources
    for (LoadedPlugin plugin : PluginManager.getInstance(context).getAllLoadedPlugins()) {
        plugin.updateResources(newResources);
    }

    Log.d(TAG, "createResourcesForN cost time: +" + (System.currentTimeMillis() - startTime) + "ms");
    return newResources;
}