UIWebView 不加载外部 Javascript 文件
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UIWebView doesn't load external Javascript file
提问by Amarsh
I have the following innocent-looking code (index.html), but it doesn't load the code.jsfile. It works well if I copy/paste the contents of the file in the HTML page. Both index.htmland code.jsfiles are in the same directory. This is the code snippet. Any help would be great.
我有以下看起来无害的代码 (index.html)，但它没有加载code.js文件。如果我将文件的内容复制/粘贴到 HTML 页面中，则效果很好。这两个index.html和code.js文件在同一目录下。这是代码片段。任何帮助都会很棒。
index.html :
索引.html：
<html>
<head>
<script type="text/javascript" src="code.js"></script>
</head>
<body onload="drawImage()">
<div><canvas id="canvas" width="320" height="480"></canvas></div>
</body>
</html>
ViewController.m:
视图控制器.m：
- (void)viewDidLoad {
[super viewDidLoad];
// load the first webpage
[homePageWebView loadRequest:[NSURLRequest requestWithURL:[NSURLfileURLWithPath:
[[NSBundle mainBundle] pathForResource:@"index"ofType:@"html"] isDirectory:NO]]];
}
回答by Linda
I have found that Xcode thinks that the js file needs to be compiled.
我发现Xcode认为需要编译js文件。
Open the project in Xcode. Go to "Targets" and look in "Compile Sources". If you see your js file in that folder, move it to the "Copy Bundle Resources" folder and delete it from the "Compile Sources" folder.
在 Xcode 中打开项目。转到“目标”并查看“编译源”。如果您在该文件夹中看到您的 js 文件，请将其移动到“复制捆绑资源”文件夹并从“编译源”文件夹中删除它。
Delete the app from your iPhone if it is installed already for testing. Go to the Build menu in Xcode and Clean all Targets. Then recompile.
如果已安装用于测试的应用程序，请从您的 iPhone 中删除该应用程序。转到 Xcode 中的 Build 菜单并清理所有目标。然后重新编译。
Check now to see if your HTML file actually sees your js file now.
现在检查以查看您的 HTML 文件现在是否真的看到了您的 js 文件。
Linda
琳达
回答by skorulis
You need to read the html file into a string and set the baseURL when loading so relative paths can be understood.
您需要将html文件读入字符串并在加载时设置baseURL，以便可以理解相对路径。
NSError* error;
NSString* html = [NSString stringWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] encoding:NSASCIIStringEncoding error:&error];
[webview loadHTMLString:html baseURL:[self getBaseURL]];
- (NSURL*) getBaseURL {
NSString* path = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"];
NSRange r = [path rangeOfString:@"/" options:NSBackwardsSearch];
path = [path substringToIndex:r.location];
path = [path stringByReplacingOccurrencesOfString:@"/" withString:@"//"];
path = [path stringByReplacingOccurrencesOfString:@" " withString:@"%20"];
path = [NSString stringWithFormat:@"file:/%@//",path];
return [NSURL URLWithString:path];
}
Something like that should work for you.
这样的事情应该对你有用。
回答by NSRover
To supplement Linda's Answer here is where you find the files:
为了补充琳达的答案，您可以在此处找到文件：
回答by Teja Swaroop
I also faced the same problem: I overcame it by doing the simple thing when adding the files to XCode I did a small change that is shown in the figure below:
我也遇到了同样的问题：我通过在将文件添加到 XCode 时做简单的事情来克服它我做了一个小改动，如下图所示：
In the figure below, one is for adding HTML, Javascript and CSS like files and the second is for general XCode files.
下图中，一个是添加 HTML、Javascript 和 CSS 之类的文件，第二个是用于通用 XCode 文件。
