배열 GCD

Question

전무 도착하지만 dispatch_async에서 실행할 때 당신은 주 스레드에서 self.data을 수정해야 tableViews 기능 numberOfRowsInSection

dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0)) { 
    self.data = self.dataOfJson("http://192.168.1.100/practice/studentCourseSelection.php?ID=\(NSUserDefaults.standardUserDefaults().objectForKey("currentUser")!)") 
    self.RefreshTableView() 
} 

func RefreshTableView() 
{ 
    dispatch_async(dispatch_get_main_queue()){ 
     self.tableView.reloadData() 
    } 
} 
func dataOfJson(url:String) -> NSArray 
{ 
    var jsonArray : NSMutableArray = [] 

    let data = NSData(contentsOfURL: NSURL(string : url)!) 
    jsonArray = try! NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as! NSMutableArray 



    return jsonArray 
} 

Answer 1

에서 오류를 가져옵니다.

dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0)) { 
    let data = self.dataOfJson("http://192.168.1.100/practice/studentCourseSelection.php?ID=\(NSUserDefaults.standardUserDefaults().objectForKey("currentUser")!)") 
    self.RefreshTableView(data)  
} 

func RefreshTableView(data: ??) { 
    dispatch_async(dispatch_get_main_queue()){ 
     self.data = data 
     self.tableView.reloadData() 
    } 
}