在MVVMCross动态绑定的UIWebView [英] Dynamic Binding UIWebView in MVVMCross

问题描述

我试图做出改变，以示例项目Cirrious.Conference。特别是在SessionView类触摸查看，并在这个类

I'm trying to make a change to sample project Cirrious.Conference. In particular in the Touch View at SessionView class and at this class

<一个href=\"https://github.com/slodge/MvvmCross-Tutorials/blob/master/Sample%20-%20CirriousConference/Cirrious.Conference.Core/ViewModels/SessionLists/BaseSessionListViewModel.cs\" rel=\"nofollow\">https://github.com/slodge/MvvmCross-Tutorials/blob/master/Sample%20-%20CirriousConference/Cirrious.Conference.Core/ViewModels/SessionLists/BaseSessionListViewModel.cs

在法

protected void NavigateToSession(Session session)
{
 ShowViewModel<SessionViewModel>(new { key = session.Key });
}

我想去除隐藏一个UIWebView（在app）带班会议的一个属性的loadRequest结合（假设有一个房产网址...）。我已经创造了SessionView一个UIWebView对象，但它不可能创造一个Swisse绑定...也许这是可能的一个customBinding ...

I'd like to openl a UIWebView (in app) binding LoadRequest with a property of class Session (suppose to have a Property URL...). I have created a UIWebView object in the SessionView but it's not possible to create a Swisse Binding...Maybe it's possible with a customBinding...

我怎么可能会做呢？

推荐答案

由于的UIWebView 不公开为的loadRequest ，那么你就不能直接绑定到它。

Since UIWebView doesn't expose a property for the LoadRequest, then you can't bind directly to it.

如果你想使用绑定的的loadRequest ，然后3个选项提供给您的：

If you want to use binding for LoadRequest, then 3 options available to you are:

1. 继承 MyWebView 从的UIWebView ，添加一个驱动器C＃属性的loadRequest ，然后使用您的UI类，并在瑞士的绑定属性 - 例如：

1. Inherit MyWebView from UIWebView, add a C# property that drives LoadRequest and then use that class in your UI and that property in your Swiss binding - e.g.:

    [Register("MyWebView")]
    public class MyWebView : UIWebView
    {
        public MyWebView()
        {
        }

        public MyWebView(IntPtr handle) : base(handle)
        {
        }

        private string _myUrl;
        public string MyUrl
        {
            get { return _myUrl; }
            set
            {
               if (_myUrl == value) return;
               _myUrl = value;
               LoadRequest(value); // or similar (I've not checked the syntax!)
            }
        }
    }

实现自定义目标结合瑞士并将其添加到您的Setup.cs。其中还包括对一些实施例的联系（其中之一是在会议 - 此该方法是在此自定义绑定的presentation描述应用程序）

Implement a custom target Swiss binding and add it to your Setup.cs. The process for this is described in this Custom Bindings presentation - which also includes links to some examples (one of them is in the Conference app)

如果这个属性不会改变，那么就不要使用绑定，而是只需调用中的loadRequest你的 MvxViewController viewDidLoad中 - 例如

If this property will never change, then don't use binding and instead just call LoadRequest in your MvxViewController ViewDidLoad - e.g.

     public void ViewDidLoad()
     {
         base.ViewDidLoad();

         var myViewModel = (MyViewModel)ViewModel;
         var url = myViewModel.Url;
         TheWebView.LoadRequest(url);
     }

这篇关于在MVVMCross动态绑定的UIWebView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！