AFNetworking JSON請求，既沒有成功也沒有錯誤塊調用

Question

我正在努力學習AFNetworking，所以寫了一個簡單的塊。我試圖從下面的網站url檢索&登錄json。

NSString *string = 
@"http://transportapi.com/v3/uk/bus/stop/490012745J/live.json?api_key=6ee115459cbeccdb902b14d39b61330d&app_id=9deefeb1&group=route"; 
NSURL *url = [NSURL URLWithString:string]; 
NSURLRequest *request = [NSURLRequest requestWithURL:url]; 


AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request]; 

operation.responseSerializer = [AFJSONResponseSerializer serializer]; 

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) 
{ 
    NSDictionary *mydict = (NSDictionary *)responseObject; 

    NSString *key; 
    for(key in mydict){ 
     NSLog(@" key %@", key); 
    } 

} 
failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
            NSLog(@"ERROR"); 
           }]; 

但是無論是成功還是失敗塊都被調用。有人能指出我做錯了什麼嗎？

Answer 1

你實際上並沒有解僱你需要添加

[[NSOperationQueue mainQueue] addOperation:operation];