使用WKWebView的loadHTMLString方法的奇怪行为。图像有时不加载

问题描述

我正在开发一个mac应用程序项目。使用WKWebView的loadHTMLString方法，我能够构建一个网页视图，除了图像加载部分，它工作良好。

I am working on a mac app project.Using WKWebView's loadHTMLString method,I am able to construct a web page view,it works well except for the image loading part.

例如：

NSString *string1 = @"<img src=\"https://apppie.files.wordpress.com/2014/09/photo-sep-14-7-40-59-pm_small1.jpg\">"
[pWebView loadHTMLString: string1 baseURL: nil];

这很好。但是一旦我将 https：更改为 http：，则网页损坏，图片不再显示。我在Firefox浏览器上检查过这两个网址，他们都很好。我不明白为什么会发生这种情况。

That works well. But once I change https: to http:,the web page is broken, image is not showing anymore. I have checked both urls on Firefox browser,they all go well. I don't understand why this is happening.

然后我尝试将 http：替换为 https：，网页的大部分图像正常加载，但仍然不是所有的（再次，我在Firefox中检查它，所有图像显示没有问题），因此，我非常确定WKWebView配置有什么问题，我该如何解决这个问题？非常感谢。

And then I try to replace all http: with https:,most of images of the web page load properly, but still not all of them.(Again,I double check it in Firefox,all images show up without problem),so I am pretty sure there is something wrong with WKWebView configuration,how can I fix that?Thanks a lot.

我的OSX版本：10.11 public beta 5;

My OSX version: 10.11 public beta 5; xCode version: 7.0 beta.

推荐答案

如果您正在开发iOS9，您必须阅读NSAppTransportSecurity。 /答案让你开始。

If you are developing for iOS9, you must read about NSAppTransportSecurity. Here is an SO question / answer to get you started.

我自己的info.plist文件包括：

My own info.plist file includes:

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>

这可能比我应该开放得多，但随着时间的推移，到我需要的特定网址。如何做到这一点也显示在链接的q / a。

This is probably much more open than I should be, but I'll change over time to limit access to specific URLs that I need. How to do this is also shown in the linked q/a.

很高兴帮助了！

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