Keyboard Dismissal Prevents Button From Being Tapped

[Smaths]

Description

Keyboard dismissal prevents any tap notifications from being registered. For example, In this repo's sample project, I expect to be able to click the Login Button and have the click event called. However, when tapping the Login with the keyboard visible, the keyboard dismisses without firing the buttons click event. It appears that you cannot interact with controls while the keyboard is visible.

To Reproduce

All steps are taken using this repo's sample project as the starting point.

1. Add a simple Debug.WriteLine("Button Clicked") to Clicked
2. Run application
3. Tap text control to focus and bring up the software keyboard.
4. Tap Login button

Expected Result: Login tapped event fires.
Actual Result: Keyboard dismisses. (Login tapped does not fire)

[mpnow]

@Smaths The issue you raise is apparently due to the Unfocused event blocking the Click event. For more details, see Xamarin Forms iOS Button Click Event is not Firing when the keyboard is open.

I was able to solve the problem and get the Click event to fire by adding a custom Entry renderer for iOS, as follows:

public class IosEntryRenderer : EntryRenderer 
    {
        protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName == VisualElement.IsFocusedProperty.PropertyName)
            {
                if (sender is Entry)
                {
                    Control.BecomeFirstResponder();
                    return;
                }
            }
            base.OnElementPropertyChanged(sender, e);
        }
    }

[Smaths]

@mpnow Thank you for the followup and the link to the issue. I do believe that's what I'm experiencing with this project.

I am attempting to reduce number of custom renderers (one of the reasons for attempting to implement this repo's code) but the added code for the Entry's custom renderer is pretty minimal. I would end up needing to implement this custom renderer workaround for all controls that pop up the keyboard/picker/etc.

---

As this appears to be a pervading issue (since 2016), it might be worth including the workaround in this repo's code such that things work consistently on both Android and iOS. I think that would better fit the expected experience for this code. @Char0394 Something to consider.