using System; using Android.Content; using Android.OS; using Android.Views.InputMethods; using Android.Widget; using AView = Android.Views.View; namespace Xamarin.Forms.Platform.Android { internal static class KeyboardManager { internal static void HideKeyboard(this AView inputView, bool overrideValidation = false) { if (Forms.Context == null) throw new InvalidOperationException("Call Forms.Init() before HideKeyboard"); if (inputView == null) throw new ArgumentNullException(nameof(inputView) + " must be set before the keyboard can be hidden."); using (var inputMethodManager = (InputMethodManager)Forms.Context.GetSystemService(Context.InputMethodService)) { if (!overrideValidation && !(inputView is EditText || inputView is TextView || inputView is SearchView)) throw new ArgumentException("inputView should be of type EditText, SearchView, or TextView"); IBinder windowToken = inputView.WindowToken; if (windowToken != null && inputMethodManager != null) inputMethodManager.HideSoftInputFromWindow(windowToken, HideSoftInputFlags.None); } } internal static void ShowKeyboard(this AView inputView) { if (Forms.Context == null) throw new InvalidOperationException("Call Forms.Init() before ShowKeyboard"); if (inputView == null) throw new ArgumentNullException(nameof(inputView) + " must be set before the keyboard can be shown."); using (var inputMethodManager = (InputMethodManager)Forms.Context.GetSystemService(Context.InputMethodService)) { if (inputView is EditText || inputView is TextView || inputView is SearchView) { if (inputMethodManager != null) { inputMethodManager.ShowSoftInput(inputView, ShowFlags.Forced); inputMethodManager.ToggleSoftInput(ShowFlags.Forced, HideSoftInputFlags.ImplicitOnly); } } else throw new ArgumentException("inputView should be of type EditText, SearchView, or TextView"); } } } }