Keyboard overlaps Editor in Xamarin.Forms on iOS - ios

Question

When I focus that Editor, a keyboard overlaps Editor and Button. I know, there is a solution: putting elements inside ScrollView, but this solution makes huge problems with scrolling ListView inside ScrollView. What should I do, to make it work properly?
Layout:
red - ScrollView,
green - ListView,
blue - StackLayout with Editor and Button.
Here is the video how this works:
https://streamable.com/wvd3h
Solution #2 is to use Xamarin.Forms.Plugins - KeyboardOverlap, but this plugin has a problem with tab bar on TabbedPage

Answer 1

Rather than using a scrollview, you could create a custom iOS renderer that shifts your view up (using the margin) when the keyboard is active.
An example of this can be seen here:
https://github.com/rdelrosario/ChatUIXForms/blob/master/ChatUIXForms.iOS/Renderers/ChatEntryRenderer.cs
Relevant code:
void RegisterForKeyboardNotifications()
{
if (_keyboardShowObserver == null)
_keyboardShowObserver = UIKeyboard.Notifications.ObserveWillShow(OnKeyboardShow);
if (_keyboardHideObserver == null)
_keyboardHideObserver = UIKeyboard.Notifications.ObserveWillHide(OnKeyboardHide);
}
void OnKeyboardShow(object sender, UIKeyboardEventArgs args)
{
NSValue result = (NSValue)args.Notification.UserInfo.ObjectForKey(new NSString(UIKeyboard.FrameEndUserInfoKey));
CGSize keyboardSize = result.RectangleFValue.Size;
if (Element != null)
{
Element.Margin = new Thickness(0, 0, 0, keyboardSize.Height); //push the entry up to keyboard height when keyboard is activated
}
}
void OnKeyboardHide(object sender, UIKeyboardEventArgs args)
{
if (Element != null)
{
Element.Margin = new Thickness(0); //set the margins to zero when keyboard is dismissed
}
}
void UnregisterForKeyboardNotifications()
{
if (_keyboardShowObserver != null)
{
_keyboardShowObserver.Dispose();
_keyboardShowObserver = null;
}
if (_keyboardHideObserver != null)
{
_keyboardHideObserver.Dispose();
_keyboardHideObserver = null;
}
}
On Android, it's likely not an issue, but if it is, you could try
android:Application.WindowSoftInputModeAdjust="Resize"