iOS 9 : Get Value From NSURLSessionDataTask In Framework - ios

Question

I had iOS framework which it send JSON to server using NSURLSessionDataTask like this :
NSURLSessionDataTask *postDataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
int responseStatusCode = [httpResponse statusCode];
if (responseStatusCode == 200)
{
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate onJsonHttpResult:data andStatusResponse:responseStatusCode];
});
}
else
{
dispatch_async(dispatch_get_main_queue(), ^{
[self.delegate onJsonHttpResult:nil andStatusResponse:responseStatusCode];
});
}
}];
[postDataTask resume];
but whenever I run it, [self.delegate onJsonHttpResult:nil andStatusResponse:responseStatusCode]; not called.
is there any way to get value outside NSURLSessionDataTask when it run inside the framework ?
Thanks

Answer 1

My suggestion is to create and use APIHelperClass with completionBlock.
That will be more easy and affective then use of custom Delegate as per my view.
To create it you can do as follow:
In APIHelperClass.h
#import <Foundation/Foundation.h>
#interface APIHelperClass : NSObject
+(void)apiCallSharedSessionPOST:(NSURLRequest *)request withCompletionHandlar:(void (^) (NSDictionary *dicResult,NSError *error, int status))completionBlock;
#end
And
APIHelperClass.m
#import "APIHelperClass.h"
#implementation APIHelperClass
+(void)apiCallSharedSessionPOST:(NSURLRequest *)request withCompletionHandlar:(void (^) (NSDictionary *dicResult,NSError *error, int status))completionBlock;
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request
completionHandler:
^(NSData *data, NSURLResponse *response, NSError *error) {
NSHTTPURLResponse* httpResponse = (NSHTTPURLResponse*)response;
int responseStatusCode = (int)[httpResponse statusCode];
if (error!=nil)
{
completionBlock(nil,error,responseStatusCode);
[task suspend];
}
else
{
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
completionBlock(dic,error,responseStatusCode);
[task suspend];
}
}];
[task resume];
}
Then you can use that class for whole App and you don't need to create custom Delegates always.
Then Use that where you want Like :
NSURLRequest *request;
/*
Configure your Request Here
*/
[APIHelperClass apiCallSharedSessionPOST:request withCompletionHandlar:^(NSDictionary *dicResult, NSError *error, int status) {
}];

Answer 2

Thanks for help but I still need delegate to return my value outside framework.
I got issued that whenever I done with NSURLSessionDataTask, delegate is became null, I think it cause that delegate already released after I got response from NSURLSessionDataTask, So I tried to change #property delegate to strong and it work. I can return my value using delegate again. Thanks