iOS 加载覆盖不覆盖整个屏幕

Question

I'm trying to display an overlay during an auto login HTTP call. I've found this code , which seems outdated somehow, but found nothing more recent.

Anyway, the Overlay is showing but not covering the whole screen as expected.

The calling code is this:

AppDelegate.FinishedLaunching

var avc = new AutoLoginViewController();
var navController = new UINavigationController(avc);

AutoLoginViewController.ViewDidLoad

var bounds = UIScreen.MainScreen.Bounds;

// show the loading overlay on the UI thread using the correct orientation sizing
loadPop = new LoadingOverlay(bounds, NSBundle.MainBundle.GetLocalizedString("connecting"));
View.Add(loadPop);

But the result is the following:

If I set a breakpoint in the LoadingOverlay constructor, I can see that the screen bounds (iPhone 6) are fine:

{{X=0,Y=0,Width=375,Height=667}}

public class LoadingOverlay : UIView
{
    public LoadingOverlay(CGRect frame, string text) : base(frame)
    {
       // configurable bits
       BackgroundColor = UIColor.Black;
       Alpha = 0.75f;
       AutoresizingMask = UIViewAutoresizing.FlexibleDimensions;
       ...
    }
}

Clearly the UIView width is incorrect.

Because we're in 2020, maybe there is another way.

Any help appreciated.

---

EDIT: The app breaks on iPhone 8 iOS 13.3 simulator, So I can't say if this is tied to a particular screen size (1x in my case).

Answer 1

Cause :

It seems that you didn't set the LaunchImage , So whether on a simulator or real device , the value of bounds is a static value .

Solution:

The easiest way is set the size of overlay as bounds of View .

var bounds = View.Bounds;

Or you could set all size of LaunchImage of different screen .