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iOS

Posted by Lukas Smith
Lukas Smith
4,026 Points

How reload data table view from other class ?

I have one ViewController with tableView. Now i create some simple class for example: CLass1 and in this class is working dispatch_get_global_queue waiting for data from server. How can reloadData in table view from this class. I can not use NSNotification reason is thread can't modificative other view. So i need do in UI from this class Class1.

1 Answer

Jo Albright
Jo Albright
5,199 Points
Jo Albright
Jo Albright
5,199 Points

I normally create a function with a completion block parameter that will be called after the background request is ran.

// request class
class func runRequest(completion: () -> ()) {

    // request = NSURLRequest(URL : url)

    NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.currentQueue(), completionHandler: { (response, data, error) -> Void in

        dispatch_async(dispatch_get_main_queue(), { () -> Void in

            completion()

        })

    })

}

// view controller class
override func viewDidLoad() {

    Request.runRequest(completion: { () in 

        tableView.reloadData()

    })

}