View the code within a sample app over on my GitHub. Just experimenting with ways to get a native UIPopoverController to show from a Xamarin.Form Page. Now, when a user taps the Return key on their keyboard whilst in the first entry, the app will automatically move the cursor to the second field. We are introducing Xamarin.Forms into an existing Xamarin iOS project. The behavior's TargetElement property is set using and uses the x:Name assigned to the second Entry as the reference point. This adds the behavior to listen to the Return key being pressed when the user is focused on the first Entry. Then, when the behavior is attached to its parent Entry, we hook up the Entry's Completed event and invoke the Focus() method when it's fired, remembering to detach the event when we're done. We create a BindableProperty called TargetElement, this will hold a reference to the Element we want to focus on next when Return is pressed. Private void Entry_Completed(object sender, EventArgs e) Protected override void OnDetachingFrom(BindableObject bindable) Protected override void OnAttachedTo(BindableObject bindable) Set => SetValue(TargetElementProperty, value) Get => (VisualElement)GetValue(TargetElementProperty) = BindableProperty.Create(nameof(TargetElement), typeof(VisualElement), typeof(SetFocusOnEntråompletedBehavior)) Public static readonly BindableProperty TargetElementProperty The Behavior code: public class SetFocusOnEntråompletedBehavior : Behavior Using a custom behavior we can subscribe to an Entry's Completed event and assign focus to a new VisualElement. For those more conventional touch devices, we need a different approach.Behaviors. In Xamarin Forms, TabIndex is supported, but is only really useful for devices connected to a keyboard. A more useable flow for mobile users is to jump to the next field when they press Return on the keyboard. Whilst most people are familiar with the concept of pressing the tab key to allow users to move between fields on a Desktop or Web form, the same isn't as true for mobile devices.
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