Why UIRefreshControl jumping?

Question

I try to use the UIRefreshControl with swift 1.2 and works fine except the UI. It is jumping and I dont know why. Here is what I am doing:

class ViewControll         


        

Answer 1

For Xamarin.iOS it's looks like this:

[Register ("MyViewController")]
partial class MyViewController
{
    [Outlet]
    public UITableView myTableView { get; set; }

    // ...
}

public partial class MyViewController : UIViewController
{
    public UIRefreshControl myRefreshControl { get; set; }

    public override void ViewDidLoad()
    {
        base.ViewDidLoad();

        // ...

        this.myRefreshControl = new UIRefreshControl();
        this.myRefreshControl.AttributedTitle = new NSAttributedString("Load News from server...");
        this.myRefreshControl.AddTarget(this, new ObjCRuntime.Selector("RefreshSource"), UIControlEvent.ValueChanged);

        #region Fix the Jump problem
        UITableViewController tableViewController = new UITableViewController();
        tableViewController.TableView = this.myTableView;
        tableViewController.RefreshControl = this.myRefreshControl;
        #endregion

        #region Fix the unwanted first showing
        this.myRefreshControl.BeginRefreshing();
        this.myRefreshControl.EndRefreshing();
        #endregion

        // ...
    }

    [Export("RefreshSource")]
    private async void RefreshSource()
    {
        #region Edit source data
        await Task.Run(() =>
            {
                Thread.Sleep(3000);
            });
        #endregion

        this.myTableView.ReloadData();
        this.myRefreshControl.EndRefreshing();
    }
}