NSUrlSession not working - ios

Question

Hi i am very new for ios and in my project i am using NSUrlSession for calling services
but in my below code i have maintain if and else conditions for handing server response but those if and else conditions not calling
please help me where was the mistack happand?
- (void)viewDidLoad {
[super viewDidLoad];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:myurl here]];
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPMethod:#"GET"];
[request setHTTPBody:[self httpBodyForParamsDictionary:params]];
//You now can initiate the request with NSURLSession or NSURLConnection, however you prefer. For example, with NSURLSession, you might do:
NSURLSessionTask *task = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(#"dataTaskWithRequest error: %#", error);
NSString * BasicnetworkError = [error localizedDescription];
NSString * AppendString = #"Http Response failed with the following ";
NSString * networkError = [AppendString stringByAppendingString:BasicnetworkError];
[self BasicError1:networkError];
}
else if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];
if (statusCode != 200) {
NSLog(#"Expected responseCode == 200; received %ld", (long)statusCode);
NSString *statusCodeError = [NSString stringWithFormat: #"Http Response failed with the following code %ld", (long)statusCode];
[self BasicError1:statusCodeError];
}
}
// If response was JSON (hopefully you designed web service that returns JSON!),
// you might parse it like so:
else{
NSError *parseError;
id responseObject = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
NSLog(#"else condtion");
if (!responseObject) {
NSLog(#"JSON parse error: %#", parseError);
} else {
NSLog(#"responseObject = %#", responseObject);
[self MainService:responseObject];
}
//if response was text/html, you might convert it to a string like so:
// ---------------------------------
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"final responseString = %#", responseString);
}
}];
[task resume];
}
- (NSData *)httpBodyForParamsDictionary:(NSDictionary *)paramDictionary{
NSMutableArray *parameterArray = [NSMutableArray array];
[paramDictionary enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *obj, BOOL *stop) {
NSString *param = [NSString stringWithFormat:#"%#=%#", key, [self percentEscapeString:obj]];
[parameterArray addObject:param];
}];
NSString *string = [parameterArray componentsJoinedByString:#"&"];
return [string dataUsingEncoding:NSUTF8StringEncoding];
}
- (NSString *)percentEscapeString:(NSString *)string{
NSString *result = CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,
(CFStringRef)string,
(CFStringRef)#" ",
(CFStringRef)#":/?#!$&'()*+,;=",
kCFStringEncodingUTF8));
return [result stringByReplacingOccurrencesOfString:#" " withString:#"+"];
}

Answer 1

There was a case of wrong if else block mentioned in your code. please use below code.
- (void)viewDidLoad {
[super viewDidLoad];
NSDictionary *mainDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
#"COLLECTION",#"SearchBy",
#"1284",#"SearchKey",
#"",#"Color",
#"",#"PriceFrom",
#"",#"PriceTo",
#"",#"QtyFrom",
#"",#"QtyTo",
nil];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://203.77.214.78/StockManager/SL/SearchProducts"]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[self httpBodyForParamsDictionary:mainDictionary]];
//You now can initiate the request with NSURLSession or NSURLConnection, however you prefer. For example, with NSURLSession, you might do:
NSURLSessionTask *task = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if (error) {
NSLog(#"dataTaskWithRequest error: %#", error);
}
else if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];
if (statusCode != 200) {
NSLog(#"Expected responseCode == 200; received %ld", (long)statusCode);
}else{
NSError *parseError;
id responseObject = [NSJSONSerialization JSONObjectWithData:data options:0 error:&parseError];
NSLog(#"else condtion");
if (!responseObject) {
NSLog(#"JSON parse error: %#", parseError);
} else {
NSLog(#"responseObject = %#", responseObject);
}
//if response was text/html, you might convert it to a string like so:
// ---------------------------------
NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"final responseString = %#", responseString);
}
}
}];
[task resume];
}