버튼을 눌렀을 때 iOS 테이블 뷰가 멈추고 콘솔에서 오류가 발생하지 않습니다.

Question

셀의 단추를 누르면 전체 응용 프로그램이 멈추고 강제로 닫고 다시 시작해야합니다. 앱이 정지되고 디버깅하는 방법을 모르면 콘솔에 아무 것도 표시되지 않습니다. 나 또한 비 사용자 지정 단추를 사용하여 시도했다.

Before hitting button

Frozen Screen

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// 
//delete button 

@IBAction func deleteButton(sender: AnyObject) { 

if phonee == "0"{ 
    let URL = "BLURRED FOR PRIVACY" 

    var url : NSString = URL 
    var urlStr : NSString = url.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding)! 
    var searchURL : NSURL = NSURL(string: urlStr as String)! 
    print (searchURL) 
    let task = NSURLSession.sharedSession().dataTaskWithURL(searchURL, completionHandler: { (data, response, error) -> Void in 
     var urlContent = NSString(data: data!, encoding: NSASCIIStringEncoding) as NSString! 
     print(urlContent) 

     if urlContent.localizedStandardContainsString("Removed event with ID") { 
      dispatch_sync(dispatch_get_main_queue()) { 
      var settings = Modal.Settings() 
      settings.bodyColor = .whiteColor() 
      Modal(title: "Success", body: "Task deleted, refresh the page.", status: .Success, settings: settings).show() 
      } 

      }else{ 
      dispatch_sync(dispatch_get_main_queue()) { 
      var settings = Modal.Settings() 
      settings.bodyColor = .whiteColor() 
      Modal(title: "Error", body: "Are you connected to the internet?", status: .Error, settings: settings).show() 
      } 
     } 
    }) 
    task.resume() 

}else{ 
    dispatch_sync(dispatch_get_main_queue()) { 
    var settings = Modal.Settings() 
    settings.bodyColor = .whiteColor() 
    Modal(title: "Error", body: "You can't delete an accepted task", status: .Error, settings: settings).show() 
    } 
    } 
} 

///////////////////////////////// /////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////// /////////////////// // 지불 버튼

@IBAction func payButton(sender: AnyObject) { 

    if phonee == "0"{ 

     dispatch_sync(dispatch_get_main_queue()) { 
     var settings = Modal.Settings() 
     settings.bodyColor = .whiteColor() 
     Modal(title: "Error", body: "Please wait for the task to be accepted", status: .Error, settings: settings).show() 
     } 
     }else{ 

     url = url + userID + "&event_id=" + eventID 
     let myURL = NSURL(string: url)! 

     print (myURL) 

     let task = NSURLSession.sharedSession().dataTaskWithURL(myURL, completionHandler: { (data, response, error) -> Void in 
      var urlContent = NSString(data: data!, encoding: NSASCIIStringEncoding) as NSString! 
      print(urlContent) 
     }) 
     task.resume() 

     progressBar.progress = 1.0 
     complete1.textColor = UIColor(red: 43/255.0, green: 192/255.0, blue: 228/255.0, alpha: 1.0) 
     accepted1.textColor = UIColor.blackColor() 

     reportButton.userInteractionEnabled = false 
     deleteButton.userInteractionEnabled = false 
     contactButton.userInteractionEnabled = false 
     payButton.userInteractionEnabled = false 
     priceLabel.textColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0) 
     self.deleteButton.backgroundColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0) 
     self.contactButton.backgroundColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0) 
     self.payButton.backgroundColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0) 
     priceLabel.textColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0) 
     reportButton.setImage(UIImage(named: "nation2.png"), forState: UIControlState.Normal) 


     } 
} 

/////////////////// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////// // 접촉 버튼

@IBAction func contactButton(sender: AnyObject) { 

    if phonee == "0"{ 
     dispatch_sync(dispatch_get_main_queue()) { 
     var settings = Modal.Settings() 
     settings.bodyColor = .whiteColor() 
     Modal(title: "Error", body: "Please wait for the task to be accepted", status: .Error, settings: settings).show() 
     } 
    }else{ 

     if let url = NSURL(string: "tel://\(phonee)") { 
      UIApplication.sharedApplication().openURL(url) 
     } 
    } 
} 

Answer 1

당신은에서 dispatch_sync(dispatch_get_main_queue())를 호출 교착 상태가되는 주 스레드 IBActions는 주 스레드에서 항상 호출되므로 (다른 스레드에서 직접 호출하지 않는 한) 모든 사용자 입력이 주 스레드에서 처리되므로 필요하지 않습니다.