Behavior.cs

Snippet Name: Android Behavior - WPF Style
Platform(s): Xamarin.Android
Function: Reproduce the beloved WPF behaviors in Android
Snippet:

    public abstract class Behavior<T> : View where T:View
    {
        int _viewId;

        protected Behavior(Context context, IAttributeSet attrs)
            : base(context, attrs)
        {
            _viewId =  context.ObtainStyledAttributes(attrs, Resource.Styleable.Behavior).GetResourceId(Resource.Styleable.Behavior_View,-1);
        }
            
        protected override void OnAttachedToWindow()
        {
            base.OnAttachedToWindow();
            View =RootView.FindViewById<T>(_viewId);
            OnAttached();
        }
        protected override void OnDetachedFromWindow()
        {
            base.OnDetachedFromWindow();
            OnDetached();
        }
            
        public abstract void OnAttached();
        public abstract void OnDetached();

        public T View
        {
            get;
            private set;
        } 
    }

Exemple of Usage: behavior to hide the keyboard when scrolling a listview

<com.mycompany.behaviors.ListViewHideKeyboardOnScroll
        android:layout_width="0px"
        android:layout_height="0px"
        local:View="@+id/resultsList" />

Credit :  Chris in-house Rockstar Developer Lamothe