How to dismiss keyboard on button press in Xamarin Forms

Question

After much hunting I worked out a way to hide the keyboard on a button press in Xamarin Forms, for the iOS case. So it's shared below.

If anyone can improve it, or share a solution for the Android side, that would be great.

Answer 1

I found this useful:

https://forums.xamarin.com/discussion/comment/172077#Comment_172077

Interface:

public interface IKeyboardHelper
{
    void HideKeyboard();
}

iOS:

public class iOSKeyboardHelper : IKeyboardHelper
{
    public void HideKeyboard()
    {
        UIApplication.SharedApplication.KeyWindow.EndEditing(true);
    }
}

Droid:

public class DroidKeyboardHelper : IKeyboardHelper
{
    public void HideKeyboard()
    {
        var context = Forms.Context;
        var inputMethodManager = context.GetSystemService(Context.InputMethodService) as InputMethodManager;
        if (inputMethodManager != null && context is Activity)
        {
            var activity = context as Activity;
            var token = activity.CurrentFocus?.WindowToken;
            inputMethodManager.HideSoftInputFromWindow(token, HideSoftInputFlags.None);

            activity.Window.DecorView.ClearFocus();
        }
    }
}

Usage in Xamarin Forms:

DependencyService.Get<IKeyboardHelper>().HideKeyboard();

Answer 2

If the removing focus method is not working for you (and it wasn't working for me) after a lot of searching I realized an easy way to force the keyboard to dismiss.

FindViewById<EditText>(Resource.Id.edittextname).Enabled = false;
FindViewById<EditText>(Resource.Id.edittextname).Enabled = true;

That's it. Just disable and enable it and it will close the keyboard.