Fetch data from NSURL synchronously.

- (void)fetchDataSynchronouslyFromURL:(NSString*)urlStr

{

    NSString* serverUrl = urlStr;

    NSData *serverData = [NSData dataWithContentsOfURL:[NSURL URLWithString:serverUrl]];

    NSError* error = nil;

    id serverResponse = [NSJSONSerialization JSONObjectWithData:serverData options:kNilOptions error:&error];

    NSLog(@"Server response:%@",serverResponse);

}