error while getting data from server using Afnetworking - ios

Question

i wanted to get data from server encoded in json to display it, so i use afnetworking library but i get error here is my code
NSURL * url =[NSURL URLWithString:#"http://software-sultan.com/alaa/image_test.php"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.responseSerializer = [AFJSONResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
// 3
array = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:nil];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
// 4
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error Retrieving Weather"
message:[error localizedDescription]
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[alertView show];
NSLog(#"%#",error);
}];
// 5
[operation start];
here is the error
Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/html" UserInfo=0x7f920964bff0 {com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x7f920965cc20> { URL: http://software-sultan.com/alaa/image_test.php } { status code: 200, headers {
Connection = "keep-alive";
"Content-Length" = 126781;
"Content-Type" = "text/html";
Date = "Thu, 29 Jan 2015 19:00:55 GMT";
"Keep-Alive" = "timeout=30";
Server = "Apache/2";
"X-Powered-By" = "PHP/5.3.13";
} }, NSErrorFailingURLKey=http://software-sultan.

Answer 1

It looks like you are trying to parse a JSON response with AFJSONResponseSerializer, but the webserver sends text/html as content type. JSON responses are generally served with the Content-Type: application/json header.
Also, if the response was successfully parsed as JSON, the responseObject given as the second parameter of your completion block would already be a valid NSArray containing your data. So there wouldn't need to create it again using NSJSONSerialization.