iOS - 显示来自webview中的html资源文件或远程网页的内容 [英] iOS - display content from an html resource file or remote webpage in a webview

问题描述

我是iOS新手。我希望有一个函数从本地html资源文件或网页加载内容，具体取决于常量中指定的内容。我该怎么做呢？例如，如果我将文件：// ...传递给函数或http：// ...，则应相应地进行渲染。

I am an iOS newbie. I want to have a function that loads the content from a local html resource file or a webpage depending on what is specified in a constant. How would I go about doing it? For eg, if I pass a file://... to the function or an http://... , it should render accordingly.

推荐答案

您可以轻松加载如下网页：

You can easily load webpages like this:

NSURLRequest *request = [NSURLRequest requestWithURL:
   [NSURL URLWithString:@"http://stackoverflow.com"]] ;

[webView loadRequest:request] ;

对于本地文件，它取决于设备上文件的位置：
对于文件在你的主包（=你的项目）中，你可以使用相同的 loadRequest 函数，但以不同方式构建路径：

For local files it depends on the location of the file on your device: For files in your main-bundle (= your project), you can use the same loadRequest function, but build the path differently:

NSString *localFilePath = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html"] ;
NSURLRequest *localRequest = [NSURLRequest requestWithURL:
  [NSURL fileURLWithPath:localFilePath]] ;

[webView loadRequest:localRequest] ;

如果你想在webView中加载一个html字符串：

and if you want to load a html-string in your webView:

NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
NSURL *baseURL = [NSURL fileURLWithPath:bundlePath];

NSString *htmlString = [bundlePath pathForResource:@"index" ofType:@"html"] ;
[webView loadHTMLString:htmlString baseURL:baseURL];

如果您的html文件位于应用程序的文档文件夹中（例如html文件）你下载了）：

and if your html-file resides in your documents folder of your application (for example a html-file you downloaded):

NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask ,YES );
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"index.html"];
NSURLRequest *documentsRequest = [NSURLRequest requestWithURL:
  [NSURL fileURLWithPath:path]] ;

[webView loadRequest:documentsRequest] ;

这篇关于iOS - 显示来自webview中的html资源文件或远程网页的内容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！