Edit Question - KnowledgeHub

Title Body

I have been combing through the many many posts about uploading images via POST in iOS. Despite the wealth of information on this topic, I cannot manage to correctly upload JPEG data taken from my iPhone Simulator Photo Library. The data, once on the server, is just a huge string of hexidecimal. Shouldn't NSData just be a byte stream? I don't get whats going on with all the hex, or why this code seems to work for everyone else. Here is the code in question: -(void)uploadWithUserLocationString:(NSString*)userLocation{ NSString *urlString = @"http://some.url.com/post"; // set up the form keys and values (revise using 1 NSDictionary at some point - neater than 2 arrays) NSArray *keys = [[NSArray alloc] initWithObjects:@"auth",@"text",@"location",nil]; NSArray *vals = [[NSArray alloc] initWithObjects:self.authToken,self.textBox.text,userLocation,nil]; // set up the request object NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"POST"]; //Add content-type to Header. Need to use a string boundary for data uploading. NSString *boundary = [NSString stringWithString:@"0xKhTmLbOuNdArY"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; //create the post body NSMutableData *body = [NSMutableData data]; [body appendData:[[NSString stringWithFormat:@"--%@\r\n",boundary] dataUsingEncoding:NSASCIIStringEncoding]]; //add (key,value) pairs (no idea why all the \r's and \n's are necessary ... but everyone seems to have them) for (int i=0; i<[keys count]; i++) { [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",[keys objectAtIndex:i]] dataUsingEncoding:NSASCIIStringEncoding]]; [body appendData:[[NSString stringWithFormat:@"%@",[vals objectAtIndex:i]] dataUsingEncoding:NSASC

Tags (comma-separated) Cancel