JSON加載時的活動指示器（微調器）

Question

如何在使用JSON加載數據並放入標籤時顯示微調器？

使用此代碼來調用JSON並把值標籤：

-(void)loadJSON { 

    NSString *urlString = [NSString stringWithFormat:@"http://www.abc.com/service/?id=John&response=json"]; 
    NSURL *url = [NSURL URLWithString:urlString]; 
    data = [NSData dataWithContentsOfURL:url]; 

    NSError *error; 

    json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error]; 

    NSDictionary *loan = [json objectForKey:@"person"]; 

    labelFirstName.text=[loan objectForKey:@"firstName"]; 
    labelLastName.text = [loan objectForKey:@"lastName"]; 
    labelNickName.text = [loan objectForKey:@"nickName"]; 
} 

Answer 1

試試您的JSON加載與MBProgressHUD。

研究這個 - https://github.com/jdg/MBProgressHUD