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Update CupertinoPicker example #118248

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merged 4 commits into from
Jan 10, 2023
Merged

Update CupertinoPicker example #118248

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9291323
Update `CupertinoPicker` example
TahaTesser Jan 10, 2023
c403dce
format lines
TahaTesser Jan 10, 2023
efbfd71
Revert making variable public
TahaTesser Jan 10, 2023
46aee57
revert variable change
TahaTesser Jan 10, 2023
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16 changes: 9 additions & 7 deletions examples/api/lib/cupertino/picker/cupertino_picker.0.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ class CupertinoPickerApp extends StatelessWidget {
);
}
}

class CupertinoPickerExample extends StatefulWidget {
const CupertinoPickerExample({super.key});

Expand Down Expand Up @@ -57,7 +58,7 @@ class _CupertinoPickerExampleState extends State<CupertinoPickerExample> {
top: false,
child: child,
),
)
),
);
}

Expand Down Expand Up @@ -86,23 +87,24 @@ class _CupertinoPickerExampleState extends State<CupertinoPickerExample> {
squeeze: 1.2,
useMagnifier: true,
itemExtent: _kItemExtent,
// This sets the initial item.
scrollController: FixedExtentScrollController(
initialItem: _selectedFruit,
),
// This is called when selected item is changed.
onSelectedItemChanged: (int selectedItem) {
setState(() {
_selectedFruit = selectedItem;
});
},
children: List<Widget>.generate(_fruitNames.length, (int index) {
return Center(
child: Text(
_fruitNames[index],
),
);
return Center(child: Text(_fruitNames[index]));
}),
),
),
// This displays the selected fruit name.
child: Text(_fruitNames[_selectedFruit],
child: Text(
_fruitNames[_selectedFruit],
style: const TextStyle(
fontSize: 22.0,
),
Expand Down
17 changes: 14 additions & 3 deletions examples/api/test/cupertino/picker/cupertino_picker.0_test.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/cupertino.dart';
import 'package:flutter_api_samples/cupertino/picker/cupertino_picker.0.dart' as example;
import 'package:flutter_test/flutter_test.dart';

Expand All @@ -14,19 +15,29 @@ void main() {
);

// Open the Cupertino picker.
await tester.tap(find.text('Apple'));
await tester.tap(find.widgetWithText(CupertinoButton, 'Apple'));
await tester.pumpAndSettle();

// Test the initial item.
CupertinoPicker picker = tester.widget<CupertinoPicker>(find.byType(CupertinoPicker));
expect(picker.scrollController!.initialItem, 0);

// Drag the wheel to change fruit selection.
await tester.drag(find.text('Mango'), _kRowOffset, touchSlopY: 0, warnIfMissed: false); // see top of file

await tester.pump();
await tester.pump(const Duration(milliseconds: 500));

// Close the Cupertino picker.
await tester.tapAt(const Offset(1.0, 1.0));
await tester.pumpAndSettle();

expect(find.text('Banana'), findsOneWidget);
expect(find.widgetWithText(CupertinoButton, 'Banana'), findsOneWidget);

// Test if the initial item has updated.
await tester.tap(find.widgetWithText(CupertinoButton, 'Banana'));
await tester.pumpAndSettle();

picker = tester.widget<CupertinoPicker>(find.byType(CupertinoPicker));
expect(picker.scrollController!.initialItem, 2);
});
}