Xamarin.forms Xamarin表单和FreshMVVM android用户界面问题

我使用XF和FreshMVVM框架，我有一个UI问题

我的代码是：

App.cs

public const string NAVIGATION_LOGIN = "NavigationContainerLogin";
        public const string NAVIGATION_MASTER_DETAIL = "NavigationContainterMasterDetail";

        private FreshMasterDetailNavigationContainer _mainNav;
        private FreshNavigationContainer _loginNav;
        public App()
        {

            //prepare two navigation container
            _mainNav = CreateMasterDetailNavigation();
            _loginNav = CreateLoginNavigation();

            if (Settings.IsSignedIn)
            {
                MainPage = _mainNav;
            }
            else
            {
                MainPage = _loginNav;
            }
        }

私有FreshMasterDetailNavigationContainer CreateMasterDetailNavigation（） { var masterDetailNav=新的FreshMasterDetailNavigationContainer（导航\主\详细）

masterDetailNav.Init（“eDocine”、“hamburger.png”）；
masterDetailNav.Master=FreshPageModelResolver.ResolvePageModel（）；
masterDetailNav.Detail=新的FreshNavigationContainer（FreshPageModelResolver.ResolvePageModel（））
{
BarBackgroundColor=Settings.IsDoctorUser？DataHelper.GreenCoor:DataHelper.BlueColor，
BarTextColor=颜色。白色
};
返回masterDetailNav；
}
私有FreshNavigationContainer CreateLoginNavigation（）
{
返回新的FreshNavigationContainer（FreshPageModelResolver.ResolvePageModel（），导航\ U登录）；
}
公共MasterDetailPage根页面
{
得到
{
返回主页作为MasterDetailPage；
}
}

它只出现在安卓5上+

---

如何解决这个问题？

我找到了这个问题的解决方案

        masterDetailNav.Init("eDocine", "hamburger.png");
        masterDetailNav.Master = FreshPageModelResolver.ResolvePageModel<MenuPageModel>();
        masterDetailNav.Detail = new FreshNavigationContainer(FreshPageModelResolver.ResolvePageModel<HomePageModel>())
        {
            BarBackgroundColor = Settings.IsDoctorUser ? DataHelper.GreenCoor : DataHelper.BlueColor,
            BarTextColor = Color.White
        };

        return masterDetailNav;
    }

    private FreshNavigationContainer CreateLoginNavigation()
    {
        return new FreshNavigationContainer(FreshPageModelResolver.ResolvePageModel<ChooseUserTypePageModel>(), NAVIGATION_LOGIN);
    }
    public MasterDetailPage RootPage
    {
        get
        {
            return MainPage as MasterDetailPage;
        }
    }