我的應(yīng)用的流程如下：主要活動： 家居碎片 ->停電設(shè)置碎片 ->停電碎片 ->家居碎片出于某種原因，當我嘗試從BlackoutFragment轉(zhuǎn)到HomeFragment時，MainActivity變?yōu)榭?，并且在我離開應(yīng)用程序并返回它之前沒有任何渲染。左邊是HomeFragment通常的樣子，右邊是當我導航回它時的樣子：我用來設(shè)置片段的方法集：    // Which is invoked like     // SetFragment(typeof(HomeFragment), "Home", true, true, false);    public void SetFragment(Type fragmentType, string fragmentName, bool addToBackStack, bool showNavigationIndicator, bool useSlideAnimation)    {        if (fragmentType == typeof(HomeFragment))            SetFragment(new HomeFragment(), fragmentType, fragmentName, addToBackStack, showNavigationIndicator, useSlideAnimation);        else if (fragmentType == typeof(BlackoutFragment))            SetFragment(new BlackoutFragment(), fragmentType, fragmentName, addToBackStack, showNavigationIndicator, useSlideAnimation);        else if (fragmentType == typeof(BlackoutSetupFragment))            SetFragment(new BlackoutSetupFragment(), fragmentType, fragmentName, addToBackStack, showNavigationIndicator, useSlideAnimation);    }    private void SetFragment(Fragment fragment, Type fragmentType, string fragmentName, bool addToBackStack, bool showNavigationIndicator, bool useSlideAnimation)    {        FragmentTransaction transaction = this.FragmentManager.BeginTransaction();        if (useSlideAnimation)            transaction.SetCustomAnimations(Resource.Animator.enter_from_left, Resource.Animator.exit_to_right, Resource.Animator.enter_from_right, Resource.Animator.exit_to_left);        transaction.Replace(Resource.Id.content_main_fragment_layout, fragment, fragmentType.Name);        if (addToBackStack)            transaction.AddToBackStack(null);        transaction.Commit();        this.FragmentManager.ExecutePendingTransactions();        if (!string.IsNullOrWhiteSpace(fragmentName))            SetAppBarTitle(fragmentName);        if (showNavigationIndicator) _navDrawerToggle.DrawerIndicatorEnabled = true;        else _navDrawerToggle.DrawerIndicatorEnabled = false;    }