xamarin.forms - 选项卡式页面作为 Exrin 中 masterdetail 页面的详细视图

Question

在我们的应用程序中有一个主从容器作为主视图容器。我们希望将选项卡式页面作为主从容器的详细信息页面，以便用户能够通过菜单和选项卡栏执行导航。有没有办法用 Exrin 实现这一目标？据我们所见，分别支持主从页面和选项卡页面。如何将这些页面组合在一起？

Answer 1

您需要拥有 Exrin 2.0.2 及更高版本才能正常工作。

首先，您需要稍微更新包含 MasterDetailPage 的 Container。接口定义略有变化。

public class MainContainer : ViewContainer, IMasterDetailContainer
{
    private MasterDetailPage page;
    public MainContainer(TabbedViewContainer mainStack, MenuStack menuStack)
        : base(Containers.Main.ToString())
    {
        page = new MasterDetailPage();
        var mdp = new MasterDetailProxy(page);
        NativeView = mdp.View;
        Proxy = mdp;
        DetailStack = mainStack;
        MasterStack = menuStack;
        RegionMapping.Add(Regions.Menu, ContainerType.Master);
        RegionMapping.Add(Regions.Main, ContainerType.Detail);
    }

    private IHolder _detailStack;
    public IHolder DetailStack { get { return _detailStack; } set { _detailStack = value; if (_detailStack is ITabbedContainer container) ((ViewContainer)container).ParentContainer = this; } }

    private IHolder _masterStack;
    public IHolder MasterStack { get { return _masterStack; } set { _masterStack = value; if (_masterStack is ITabbedContainer container) ((ViewContainer)container).ParentContainer = this; } }

    public IMasterDetailProxy Proxy { get; set; }

    public bool IsPresented
    {
        get
        {
            return page.IsPresented;
        }
        set
        {
            page.IsPresented = value;
        }
    }

    public void SetStack(ContainerType type, object newPage)
    {
        switch (type)
        {
            case ContainerType.Detail:
                page.Detail = newPage as Page;
                break;
            case ContainerType.Master:
                page.Master = newPage as Page;
                break;
        }

    }
}

其次，请注意，您传递的是 TabbedViewContainer，而不是构造函数中的堆栈，并根据需要进行分配。您的 TabbedViewContainer 可能看起来像这样。

public class TabbedViewContainer : Exrin.Framework.ViewContainer, ITabbedContainer
{

    public TabbedViewContainer(MainStack mainStack, SecondStack secondStack)
        : base(Containers.Tabbed.ToString(), null)
    {
        Children = new List<IStack>() { mainStack, secondStack };
        var tabbedPage = new Xamarin.Forms.TabbedPage();
        var tabbed = new TabbedProxy(tabbedPage);
        NativeView = tabbed.View;

        foreach (var child in Children)
        {
            tabbed.Children.Add(child.Proxy.NativeView);
        }
    }


    public IList<IStack> Children { get; set; }

}