如何检查NSDATA类型？

发布于 2024-11-17 15:52:39 字数 277 浏览 3 评论 0原文

我有下载图像的类

首先我有 NSMutable URLRequest 比我建立 NSURLConnection 并且我想检查我在此函数中收到的数据

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

如果是图像，则写入文件夹；如果是文本，则跳到下一张图像。

如何检查接收到的数据类型？

原文

I have the class which downloads images

First I have NSMutable URLRequest than I establish NSURLConnection and than I want to check which data I received in this function

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

If it is image than write to the folder when it is some text than skip to the next image.

How do I check the type of received data?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

浮世清欢 2024-11-24 15:52:39

在 NSURLConnection 的委托方法中，您可以获取响应头，从中您可以获取内容类型。如果服务器内容类型设置正确，您将在此处正确获得响应的内容类型。

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
       NSDictionary *dicFields = [response allHeaderFields];
}

In delegate method of NSURLConnection, you can get header of response, from which you can get content type. If content type is set correctly from server, you will get content type in response over here correctly.

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
       NSDictionary *dicFields = [response allHeaderFields];
}

回复收藏 0 原文

~没有更多了~