.resume在调用其他委托方法后执行

Question

我在viewDidLoad()中添加了我的web服务调用，但它总是在所有其他函数被调用后恢复执行。以下是我的代码。

override func viewDidLoad() {   
    super.viewDidLoad() 
    self.addSlideMenuButton()   
    getData()   
    calendarManager = JTCalendarManager.init() 
    calendarManager.delegate = self 
    createMinAndMaxDate()   
    calendarManager.menuView = calendarMenuView 
    calendarManager.contentView = calendarContentView 
} 

func getData(){   
    var request = URLRequest(url: URL(string: "http:xxx")!) 
    request.httpMethod = "GET" 
    let task = URLSession.shared.dataTask(with: request) { data, 
    response, error in 
     guard let data = data, error == nil else { 
      print("error=\(String(describing: error))") 
      return 
     }    
     else {     
      do{      
       //empty eventDetail dictionary 
       self.Detail = [String: String]() as NSDictionary 

       let json = try JSONSerialization.jsonObject(with: 
       data, options:.allowFragments) as! [String:AnyObject] 
       if let dictionary = json as? [String: Any] { 
        if let nestedDictionary = 
        dictionary["xxx_webservices"] as? [String: Any] 
        { 
         // access nested dictionary values by key 
         let dateArray = nestedDictionary["3"] as! 
         [String:Any] 
         for details in (dateArray["xxx"] as! 
         [[String:Any]]){ 
          // access all key/value pairs in 
         dictionary 
          print(details["xxx"]!) 

           DispatchQueue.main.async (execute: { 
           () -> Void in 
            //event details contains details 
            of an event 
            self.eventDetail = 
            nestedDictionary["3"] as! 
            NSDictionary 
           }) 
          } 
         } 
        } 
       }      
      } 
      catch { 
       print("Error with Json: \(error)") 
      }     
     }    
    } 
    task.resume() 

task.resume()总是在调用日历方法的委托后执行。如何在调用其他代表之前恢复该任务，以便我可以在日历视图中显示数据？ 谢谢

Answer 1

在web服务中添加此代码的确有窍门。

DispatchQueue.main.async { 
    self.calendarManager.reload() 
} 

这将调用日历委托与Web服务数据。