Added optional parameter keyboardType to showDatePicker (#93439)

packages/flutter/lib/src/material/date_picker.dart

@@ -151,6 +151,7 @@ Future<DateTime?> showDatePicker({
   String? errorInvalidText,
   String? fieldHintText,
   String? fieldLabelText,
+  TextInputType? keyboardType,
 }) async {
   assert(context != null);
   assert(initialDate != null);
@@ -195,6 +196,7 @@ Future<DateTime?> showDatePicker({
     errorInvalidText: errorInvalidText,
     fieldHintText: fieldHintText,
     fieldLabelText: fieldLabelText,
+    keyboardType: keyboardType,
   );
 
   if (textDirection != null) {
@@ -249,6 +251,7 @@ class DatePickerDialog extends StatefulWidget {
     this.errorInvalidText,
     this.fieldHintText,
     this.fieldLabelText,
+    this.keyboardType,
     this.restorationId,
   }) : assert(initialDate != null),
        assert(firstDate != null),
@@ -334,6 +337,11 @@ class DatePickerDialog extends StatefulWidget {
   /// string. For example, 'Month, Day, Year' for en_US.
   final String? fieldLabelText;
 
+  /// The keyboard type of the [TextField].
+  ///
+  /// If this is null, it will default to [TextInputType.datetime]
+  final TextInputType? keyboardType;
+
   /// Restoration ID to save and restore the state of the [DatePickerDialog].
   ///
   /// If it is non-null, the date picker will persist and restore the
@@ -512,6 +520,7 @@ class _DatePickerDialogState extends State<DatePickerDialog> with RestorationMix
                   errorInvalidText: widget.errorInvalidText,
                   fieldHintText: widget.fieldHintText,
                   fieldLabelText: widget.fieldLabelText,
+                  keyboardType: widget.keyboardType,
                   autofocus: true,
                 ),
                 const Spacer(),

packages/flutter/lib/src/material/input_date_picker_form_field.dart

@@ -56,6 +56,7 @@ class InputDatePickerFormField extends StatefulWidget {
     this.errorInvalidText,
     this.fieldHintText,
     this.fieldLabelText,
+    this.keyboardType,
     this.autofocus = false,
   }) : assert(firstDate != null),
        assert(lastDate != null),
@@ -125,6 +126,11 @@ class InputDatePickerFormField extends StatefulWidget {
   /// string. For example, 'Month, Day, Year' for en_US.
   final String? fieldLabelText;
 
+  /// The keyboard type of the [TextField].
+  ///
+  /// If this is null, it will default to [TextInputType.datetime]
+  final TextInputType? keyboardType;
+
   /// {@macro flutter.widgets.editableText.autofocus}
   final bool autofocus;
 
@@ -242,7 +248,7 @@ class _InputDatePickerFormFieldState extends State<InputDatePickerFormField> {
         labelText: widget.fieldLabelText ?? localizations.dateInputLabel,
       ),
       validator: _validateDate,
-      keyboardType: TextInputType.datetime,
+      keyboardType: widget.keyboardType ?? TextInputType.datetime,
       onSaved: _handleSaved,
       onFieldSubmitted: _handleSubmitted,
       autofocus: widget.autofocus,

packages/flutter/test/material/date_picker_test.dart

@@ -26,6 +26,7 @@ void main() {
   String? fieldHintText;
   String? fieldLabelText;
   String? helpText;
+  TextInputType? keyboardType;
 
   final Finder nextMonthIcon = find.byWidgetPredicate((Widget w) => w is IconButton && (w.tooltip?.startsWith('Next month') ?? false));
   final Finder previousMonthIcon = find.byWidgetPredicate((Widget w) => w is IconButton && (w.tooltip?.startsWith('Previous month') ?? false));
@@ -52,6 +53,7 @@ void main() {
     fieldHintText = null;
     fieldLabelText = null;
     helpText = null;
+    keyboardType = null;
   });
 
   Future<void> prepareDatePicker(
@@ -94,6 +96,7 @@ void main() {
       fieldHintText: fieldHintText,
       fieldLabelText: fieldLabelText,
       helpText: helpText,
+      keyboardType: keyboardType,
       builder: (BuildContext context, Widget? child) {
         return Directionality(
           textDirection: textDirection,
@@ -701,6 +704,14 @@ void main() {
       });
     });
 
+    testWidgets('KeyboardType is used', (WidgetTester tester) async {
+      keyboardType = TextInputType.text;
+      await prepareDatePicker(tester, (Future<DateTime?> date) async {
+        final TextField field = textField(tester);
+        expect(field.keyboardType, TextInputType.text);
+      });
+    });
+
     testWidgets('Initial date is the default', (WidgetTester tester) async {
       await prepareDatePicker(tester, (Future<DateTime?> date) async {
         await tester.tap(find.text('OK'));