将 UIWebView 根 URL 重新映射到 [[NSBundle mainBundle] bundleURL] [英] Remap UIWebView root URL to [[NSBundle mainBundle] bundleURL]

问题描述

我的 iPhone 应用程序中有一些 HTML 和一些图像，排列如下:

I've got some HTML and some images in my iPhone app, arranged something like:

html/
    foo.html
images/
    bar.png

我可以通过几种不同的方式让 bar.png 出现在我的 UIWebView 中——要么从 foo.htmlcode>NSUrl，然后从 html 目录返回目录树:

I can get bar.png to appear in my UIWebView a couple of different ways -- either loading foo.html from an NSUrl, and walking back up the directory tree from the html directory:

<img src="../images/bar.png"/>

或通过将 foo.html 加载到字符串中，使用 loadHtmlString，并使用 [[NSBundle mainBundle] bundleURL] 作为 >baseURL:

or by loading foo.html into a string, using loadHtmlString, and using [[NSBundle mainBundle] bundleURL] as the baseURL:

<img src="images/bar.png"/>

虽然这两种方法都有些笨拙——在第一种情况下，如果我移动 HTML 文件，我必须重新调整所有相对路径，而在第二种情况下，我必须忽略实际的路径结构HTML 文件.

Both of these are kind of clumsy, though -- in the first case, if I move HTML files around I have to rejigger all the relative paths, and in the second case, I have to ignore the actual path structure of the HTML files.

我想做的是这个 --

<img src="/images/bar.png"/>

-- 将 bundleURL 视为站点"的根.有什么办法可以使这项工作正常进行，还是我注定要将其转换为 file:///images/bar.png 并且找不到文件?

-- treating the bundleURL as the root of the "site". Is there any way to make this work, or am I doomed to have that translated into file:///images/bar.png and have the file not found?

推荐答案

如果我没记错的话，您的项目包中有一些文件要加载到 Web 视图中.您只需使用以下几行代码即可完成:

If I'm not mistaken, you have some files in your project bundle that you want to load in your web view. You can do it simply with these few lines of code:

NSString *imagePath = [[NSBundle mainBundle] pathForResource:@"bar" ofType:@"png"];
NSURL    *imageURL  = [NSURL fileURLWithPath:imagePath];

我假设您有一个包含 Web 视图模式的文本/html 文件.您需要将图像作为对象添加到那里 (src="%@"...)，然后将 imageURL 添加到模式:

I'm assuming that you have a text/html file containing the pattern for your web view. You'll need to add the image as an object there (src="%@"...) and then add the imageURL to the pattern:

NSString *path = [[NSString alloc]initWithString:[[NSBundle mainBundle]pathForResource:@"htmlPattern" ofType:@"html"]];
NSError *error;
NSString *pattern = [[NSString alloc]initWithContentsOfFile:path 
                                                   encoding:NSUTF8StringEncoding
                                                      error:&error];


htmlPage = [[NSString  alloc]initWithFormat:pattern,
            imageURL; 
webView = [[UIWebView alloc] initWithFrame:WEBVIEW_FRAME];
[webView loadHTMLString:htmlPage baseURL:[NSURL URLWithString:path]];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:pattern]]];

这篇关于将 UIWebView 根 URL 重新映射到 [[NSBundle mainBundle] bundleURL]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！