iPhone的UIWebView - 调用loadHTMLString：baseURL：第二次不做任何事情？ [英] iPhone UIWebView - Calling loadHTMLString:baseURL: a second time doesn't do anything?

问题描述

UIWebView的 -loadHTMLString：baseURL：方法意味着每个实例只能调用一次？

这是我的逻辑流程：

 
 1.通过-loadHTMLString查看加载和提供UIWebView占位符文本：baseURL：
 2. NSURLConnection请求一个URL异步
 3.在NSURLConnection完成后，通过-loadHTMLString：baseURL：
 

>调试显示正在调用 loadHTMLString：baseURL：，并且传入的字符串是正确的，但UIWebView未更新。我甚至尝试调用[webViewInstance setNeedsDisplay]认为重绘会修复它，但没有骰子。

在Apple Developer文档中，它没有提到任何关于单向调用的方法，每个实例，但基于它的行为，这就是它的样子。任何人都遇到过这种情况？

解决方案

对loadHTMLString：可以被调用的次数没有限制。我在应用程序的相同UIWebView中调用了数百次。

您是否实现了webView：shouldStartLoadWithRequest：navigationType：？如果你这样做，确保你返回YES。

Is the -loadHTMLString:baseURL: method of UIWebView meant to only be called once per instance?

Here's my logic flow:

1.  View loads & supplies UIWebView placeholder text via -loadHTMLString:baseURL:
2.  NSURLConnection requests a URL asynchronously
3.  Upon NSURLConnection finished, replace UIWebView content with loaded data 
    via -loadHTMLString:baseURL:

Debugging shows that loadHTMLString:baseURL: is being called and the string being passed in is correct, but the UIWebView isn't updated. I even tried calling [webViewInstance setNeedsDisplay] thinking a redraw would fix it, but no dice.

In Apple Developer docs, it says nothing about the method being one-call-per-instance, but based on its behavior, this is what it seems like. Anyone else run into this?

解决方案

There's no limit on the number of times loadHTMLString: can be called. I call it hundreds of times on the same UIWebView in my app.

Did you implement webView:shouldStartLoadWithRequest:navigationType: ? If you did, make sure you return YES.

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