How can you read a files MIME-type in objective-c

Question

I am interested in detecting the MIME-type for a file in the documents directory of my iPhone application. A search through the docs did not provide any answers.

Answer 1

It's a bit hacky, but it should work, don't know for sure because I'm just guessing at it

There are two options:

1. If you just need the MIME type, use the timeoutInterval: NSURLRequest.
2. If you want the data as well, you should use the commented out NSURLRequest.

Make sure to perform the request in a thread though, since it's synchronous.

NSString* filePath = [[NSBundle mainBundle] pathForResource:@"imagename" ofType:@"jpg"]; NSString* fullPath = [filePath stringByExpandingTildeInPath]; NSURL* fileUrl = [NSURL fileURLWithPath:fullPath]; //NSURLRequest* fileUrlRequest = [[NSURLRequest alloc] initWithURL:fileUrl]; NSURLRequest* fileUrlRequest = [[NSURLRequest alloc] initWithURL:fileUrl cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:.1];  NSError* error = nil; NSURLResponse* response = nil; NSData* fileData = [NSURLConnection sendSynchronousRequest:fileUrlRequest returningResponse:&response error:&error];  fileData; // Ignore this if you're using the timeoutInterval           // request, since the data will be truncated.  NSString* mimeType = [response MIMEType];  [fileUrlRequest release];