add support to dismiss the prompt with enter on keyboard

Author: pictos

src/Controls/src/Core/Platform/AlertManager/AlertManager.Android.cs

@@ -6,10 +6,12 @@
 using Android.Content;
 using Android.Text;
 using Android.Views;
+using Android.Views.InputMethods;
 using Android.Widget;
 using AndroidX.AppCompat.Widget;
 using Microsoft.Maui.Controls.Internals;
 using static Android.Views.ViewGroup;
+using static Android.Widget.TextView;
 using AButton = Android.Widget.Button;
 using AppCompatActivity = AndroidX.AppCompat.App.AppCompatActivity;
 using AppCompatAlertDialog = AndroidX.AppCompat.App.AlertDialog;
@@ -275,8 +277,10 @@ void OnPromptRequested(IView sender, PromptArguments arguments)
 				if (arguments.Keyboard == Keyboard.Numeric)
 					editText.KeyListener = LocalizedDigitsKeyListener.Create(editText.InputType);
 
+				editText.EditorAction += OnEditorAction;
+
 				if (arguments.MaxLength > -1)
-					editText.SetFilters(new IInputFilter[] { new InputFilterLengthFilter(arguments.MaxLength) });
+					editText.SetFilters([new InputFilterLengthFilter(arguments.MaxLength)]);
 
 				frameLayout.AddView(editText);
 				alertDialog.SetView(frameLayout);
@@ -288,6 +292,21 @@ void OnPromptRequested(IView sender, PromptArguments arguments)
 				alertDialog.Window.SetSoftInputMode(SoftInput.StateVisible);
 				alertDialog.Show();
 				editText.RequestFocus();
+
+				void OnEditorAction(object sender, EditorActionEventArgs e)
+				{
+					if (sender is not AppCompatEditText editText)
+					{
+						return;
+					}
+
+					editText.EditorAction -= OnEditorAction;
+
+					if (e.ActionId == ImeAction.Done)
+					{
+						alertDialog.GetButton((int)DialogButtonType.Positive)?.PerformClick();
+					}
+				}
 			}
 
 			void UpdateProgressBarVisibility(bool isBusy)

src/Controls/src/Core/Platform/AlertManager/AlertManager.Windows.cs

@@ -143,7 +143,8 @@ async void OnPromptRequested(Page sender, PromptArguments arguments)
 					Input = arguments.InitialValue ?? string.Empty,
 					Placeholder = arguments.Placeholder ?? string.Empty,
 					MaxLength = arguments.MaxLength >= 0 ? arguments.MaxLength : 0,
-					InputScope = arguments.Keyboard.ToInputScope()
+					InputScope = arguments.Keyboard.ToInputScope(),
+					DefaultButton = ContentDialogButton.Primary
 				};
 
 				if (arguments.Cancel != null)

src/Controls/src/Core/Platform/AlertManager/AlertManager.iOS.cs

@@ -136,6 +136,13 @@ void PresentPrompt(Page sender, PromptArguments arguments)
 					uiTextField.Text = arguments.InitialValue;
 					uiTextField.ShouldChangeCharacters = (field, range, replacementString) => arguments.MaxLength <= -1 || field.Text.Length + replacementString.Length - range.Length <= arguments.MaxLength;
 					uiTextField.ApplyKeyboard(arguments.Keyboard);
+					uiTextField.ShouldReturn = _ =>
+					{
+						arguments.SetResult(alert.TextFields[0].Text);
+						alert.DismissViewController(true, null);
+
+						return false;
+					};
 				});
 
 				var oldFrame = alert.View.Frame;