如何使用 MonoTouch 调用 javascript 函数，反之亦然? [英] How I can call a javascript function with MonoTouch and vice versa?

问题描述

我是使用单点触控的新手.

i'm new using monotouch.

我的问题是我想从 monotouch 函数调用 javascript 函数，javascript 函数也可以调用 monotouch 函数.

My problem is i want call a javascript function from a monotouch function and javascript function could call a monotouch function too.

我相信使用客观 c 这个问题是可能的，但我需要用单点触控来解决.

I believe that with objective c this problem is possible, but i need making it with monotouch.

请帮帮我.

感谢您的帮助

推荐答案

要从应用程序调用 UIWebView 中运行的 Javascript 代码，请使用 EvaluateJavascript 方法，如下所示:

To invoke Javascript code running in the UIWebView from your application, use the EvaluateJavascript method, like this:

myView.EvaluateJavaScript ("a = 1;");

要回调到您的 C# 代码中，唯一的选择是像这样连接到 ShouldStartLoad 属性:

To call back into your C# code, the only option is to hook up to the ShouldStartLoad property like this:

myView.ShouldStartLoad = myHandler;

[...]

bool myHandler (UIWebView webView, NSUrlRequest request, UIWebViewNavigationType navType)
{
    // Determine what to do here based on the @request and @navType
} 

当然，如果您想轻松访问局部变量，也可以使用匿名方法:

You can of course, also use anonymous methods if you want to access local variables easily:

myView.ShouldStartLoad = (webView, request, navType) => {
     // Determine here what to do
}

在 Javascript 端，如果你想回调 Mono，那么你可以将 location.href 属性设置为一个特殊"的 url，如下所示:

In the Javascript side, if you want to call back to Mono, you then set the location.href property to a "special" url, like this:

// Javascript code:
location.href = "myapp://action?par1=abc&par2=def"

信息将在请求对象上可用:request.Url.AbsoluteString

The information will be available on the request object: request.Url.AbsoluteString

这篇关于如何使用 MonoTouch 调用 javascript 函数，反之亦然?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！