Waiting or not exiting the code block in getting json - objective-c

Question

I am using GET method on Json. The GET method is inside a for loop, and the issue is it is not finishing the task or not getting the result. Instead the loop increments. I've placed a breakpoint inside the block where I am setting the result data to a NSDictionary but it never goes there.
Is it possible for the GET method to be directly called. I mean the code will be read line by line. And it will not skip or wait for the json to finish processing?
Here's what I've done:
- (void)downloadJsonFeed
{
for(int i = 1;i < self.numberOfEpisodes;i++)
{
NSString *endPoint = [[[[baseJsonUrl stringByAppendingString:getEpisodes]stringByAppendingString:self.title]stringByAppendingString:#"&episodeNumber="]stringByAppendingString:[NSString stringWithFormat:#"%i",i]];
NSLog(#"End point %#",endPoint);
[JsonDownload getJson:token andEndpointString:endPoint WithHandler:^(__weak id result)
{
NSArray *episodeArray =result;
//will do some task here
}];
}
}
- (void)getJson:(NSString *)authData andEndpointString:(NSString *)urlString WithHandler:(void(^)(__weak id result))handler
{
NSURLSessionConfiguration *defaultConfigObject = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration: defaultConfigObject delegate: nil delegateQueue: [NSOperationQueue mainQueue]];
NSURL * url = [NSURL URLWithString:urlString];
NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:url];
//NSString *auth = [NSString stringWithFormat:#"Bearer {%#}", authData];
[urlRequest setValue:#"application/json" forHTTPHeaderField:#"Content-type"];
[urlRequest setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[urlRequest setValue:authData forHTTPHeaderField:#"Cookie"];
[urlRequest setHTTPMethod:#"GET"];
NSURLSessionDataTask * dataTask =[defaultSession dataTaskWithRequest:urlRequest
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if(error == nil)
{
id returnedObject = [NSJSONSerialization JSONObjectWithData: data options: NSJSONReadingMutableLeaves error:nil];
handler(returnedObject);
}
else{
NSLog(#"error %#",error);
}
}];
[dataTask resume];
}
I've placed a break point in this line NSArray *episodeArray =result; and it never goes there. But when I put the break point on [JsonDownload getJson:token andEndpointString:endPoint WithHandler:^(__weak id result) line it is responding
And on the commented line //will do some task here I need to a task there before getting another json again. But I can't cause it never go inside the code block

Answer 1

Fixed the issue by replacing white space characters in my endPoint by %20