将 NSData 加载到 UIWebView [英] Loading NSData into a UIWebView

问题描述

在我的网络浏览器中，我尝试使用从 NSURLConnection 获得的 NSData 加载 UIWebView.当我尝试将其加载到 UIWebView 中时，它会显示 HTML 纯文本，而不是站点.

In my web browser, I am trying to load a UIWebView with NSData obtained from a NSURLConnection. When I try to load it into the UIWebView, instead of the site, it comes up with the HTML plain text.

这是我的代码:

在 viewDidLoad:

NSURLRequest *request = [NSURLRequest requestWithURL: [NSURL URLWithString:@"http://www.msn.com"]];
[NSURLConnection connectionWithRequest: request delegate:self];

后面的代码:

 -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
  {
     webdata = [NSMutableData dataWithData: data];
  }

 -(void)connectionDidFinishLoading:(NSURLConnection *)connection
  {
    [webview loadData:webdata MIMEType: @"text/html" textEncodingName: @"UTF-8" baseURL:nil];
  }

推荐答案

您没有附加您正在接收的数据.使用这段代码

You are not appending data that you are receiving. Use this piece of code

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    if (webdata == nil) {
        webdata = [[NSMutableData alloc] init];
    }
    [webdata appendData:data];
}

此方法可能会被调用一次或多次，具体取决于您的数据长度.因此，不要将新数据分配给您的 ivar，而是将您的数据附加到它，以便您获得完整的响应，而不是收到的最后一个数据包.
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更新
或者像这样使用.

This method might be called once or more times depending upon your data length. So instead of assigning new data to your ivar, append your data to it so that you have the full response not the last packet of data received.
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Updated
Or use like this.

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
        webdata = [[NSMutableData alloc] init];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
    [webdata appendData:data];
}

-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
    [mWebView loadData:webdata MIMEType: @"text/html" textEncodingName: @"UTF-8" baseURL:nil];
}

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