iphone - UIWebView 和编码的 HTML 字符串？

Question

我正在做一个 iPhone 项目。我正在从 RSS 提要中获取一个 HTML 片段，并尝试使用 loadHTMLString 方法将其加载到 UIWebView 中。

我从提要中收到的字符串是 HTML 编码的。当我将它传递给 webview 时，它会显示解码后的 HTML，这意味着它会显示标签以及页面内容。

在将 HTML 传递给 UIWebView 之前，在 Objective-C 中有没有办法对 HTML 进行解码？

编辑:添加编码 HTML 的示例:

这是一段很长的文章，但这里有一个片段:

<li>Wireless Data: Wi-Fi (802.11b/g), Nike + iPod support built in,  Maps location-based service, Bluetooth 2.1 + EDR</li>
    <li>Audio Frequency Response: 20Hz to 20,000Hz</li>
    <li>Audio Formats Supported: <span>AAC </span>(16 to 320 Kbps), Protected <span>AAC  </span>(from iTunes Store), <span>MP3 </span>(16 to 320 Kbps), <span>MP3  VBR</span>, Audible (formats 2, 3, and 4), Apple Lossless, <span>WAV</span>,  and <span>AIFF</span></li>
    <li>Photo Support: Syncs iPod-viewable photos in <span>JPEG</span>,  BMP, <span>GIF</span>, TIFF, <span>PSD </span>(Mac only), and <span>PNG</span>  formats</li>
    <li>TV Out Support: 480p and 576p</li>
    <li>Video Support: H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30  frames per second, Low-Complexity version of the H.264 Baseline Profile  with <span>AAC</span>-LC audio up to 160 Kbps, 48kHz, stereo audio in  .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by  480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with <span>AAC</span>-LC  audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file  formats; <span>MPEG</span>-4 video, up to 2.5 Mbps, 640 by 480 pixels,  30 frames per second, Simple Profile with <span>AAC</span>-LC audio up  to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats</li>
    <li>Environmental Requirements: Operating temperature: 32° to 95° F  (0° to 35° C); Nonoperating temperature: -4° to 113° F (-20° to 45° C), Relative  humidity: 5% to 95% noncondensing</li>

Answer 1

类似于@Don 的回答，但有更多的优化:

NSMutableString * html = [NSMutableString stringWithString:originalHTML];
NSDictionary * replacements = [NSDictionary dictionaryWithObjectsAndKeys:
                               @"<", @"&lt;",
                               @">", @"&gt;",
                               ....,
                               nil];
for (NSString * htmlEntity in replacements) {
  [html replaceOccurrencesOfString:htmlEntity withString:[replacements objectForKey:htmlEntity] options:0 range:NSMakeRange(0, [html length])];
}

一些其他想法:将原始 html 加载到 webview 中，然后使用一些 javascript 提取呈现的文本，然后将呈现的文本作为源管道返回到 webview 中。这可能不会很有效，但它可能会起作用。

还有一些其他选项可以通过谷歌搜索找到 "cocoa decode html entity" .