Question

我正在尝试在UIWebView中加载文件的MIME类型，以便我可以下载它们我现在正在使用的方法有时候，无论如何我能做得更好吗？

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType 
{   
   NSURL *url = request.URL;
   NSString *main = url.absoluteString;
   //enter code here currentURL = main;
   NSURLRequest *req  = [NSURLRequest requestWithURL:url];
   NSURLConnection *conn = [NSURLConnection connectionWithRequest:req delegate:self];
   [conn start];
   return YES;
}

NSString *mime = [response MIMEType];
NSLog(@"%@",mime);
DownloadManagerAppDelegate *delegate = (DownloadManagerAppDelegate *)[[UIApplication sharedApplication] delegate];

DLMan *downloadView = [[DLMan alloc] init];
if ([mime rangeOfString:@"application/x-compressed"].length>0 || [mime rangeOfString:@"application/x-zip-compressed"].length>0  || [mime rangeOfString:@"application/zip"].length>0 || [mime rangeOfString:@"multipart/x-zip"].length>0) 
{
  self.tabBarController.selectedIndex = 1;
  [[delegate myDownloadManager]addDownload:currentURL];
  NSLog(currentURL);
  NSLog(@"download");
}

Answer 1

在NSURLConnection委托didReceiveResponse中使用以下内容：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{
   NSString *mime = [response MIMEType];
}

我已经读过您没有正确获取MIME，您可能对其他方法感兴趣，请创建一个plist MIME类型，例如 mimeTypes.plist

（不一定是所有类型，至少是您要使用或处理的类型）

使用：

将它们加载到NSDicionary

NSString *mainBundlePath = [[NSBundle mainBundle] bundlePath];
NSString *plistPath = [mainBundlePath stringByAppendingPathComponent:@"mimeTypes.plist"];

NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:plistPath]

通过搜索目标的扩展名来检查MIME：

[dict valueForKey:@"mp3"];  // will return audio/mpeg.

请点击此链接查看MIME Types。

列表

获取UIWebView中加载的文件的mimetypes

1 个答案: