/// <summary>
/// Called automatically in ViewDidLoad()
/// </summary>
protected void StartLoadingScreen(string message)
{
using (var pool = new NSAutoreleasePool()) {
this.InvokeOnMainThread(delegate {
var bounds = new RectangleF(0, 0, 768, 1004);
if (this.InterfaceOrientation == UIInterfaceOrientation.LandscapeLeft ||
this.InterfaceOrientation == UIInterfaceOrientation.LandscapeRight)
{
bounds = new RectangleF(0, 0, 1024, 748);
}
if (AppDelegate.IsPhone)
{
bounds = new RectangleF(0, 0, 320, 460);
}
this.loadingDialogView = new LoadingDialogView(message, bounds);
// because DialogViewController is a UITableViewController,
// we need to step OVER the UITableView, otherwise the loadingOverlay
// sits *in* the scrolling area of the table
this.View.Superview.Add(this.loadingDialogView);
this.View.Superview.BringSubviewToFront(this.loadingDialogView);
this.View.UserInteractionEnabled = false;
});
}
}
/// <summary>
/// If a loading screen exists, it will fade it out.
/// Your subclass MUST call this method once data has loaded (or a loading error occurred)
/// to make the loading screen disappear and return control to the user
/// </summary>
protected void StopLoadingScreen()
{
using (var pool = new NSAutoreleasePool()) {
this.InvokeOnMainThread(delegate {
if (this.loadingDialogView != null)
{
Debug.WriteLine("Fade out loading...");
this.loadingDialogView.OnFinishedFadeOutAndRemove += delegate {
if (this.loadingDialogView != null)
{
Debug.WriteLine("Disposing of loadingDialogView object..");
this.loadingDialogView.Dispose();
this.loadingDialogView = null;
}
};
this.loadingDialogView.FadeOutAndRemove();
this.View.UserInteractionEnabled = true;
}
});
}
}