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Migrate sample code to NNBD (#72755)

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This commit is contained in:
Kate Lovett 2020-12-21 18:34:02 -06:00 committed by GitHub
parent 2b18b0d00c
commit 32741c0ec8
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 19 additions and 40 deletions
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5
packages/flutter/lib/src/cupertino/colors.dart
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@ -12,9 +12,8 @@ import 'interface_level.dart';
import 'theme.dart';
// Examples can assume:
// // @dart = 2.9
// Widget child;
// BuildContext context;
// late Widget child;
// late BuildContext context;
/// A palette of [Color] constants that describe colors commonly used when
/// matching the iOS platform aesthetics.

5
packages/flutter/lib/src/cupertino/form_row.dart
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@ -8,9 +8,6 @@ import 'package:flutter/widgets.dart';
import 'colors.dart';
import 'theme.dart';
// Examples can assume:
// // @dart = 2.9
// Content padding determined via SwiftUI's `Form` view in the iOS 14.2 SDK.
const EdgeInsetsGeometry _kDefaultPadding =
EdgeInsetsDirectional.fromSTEB(20.0, 6.0, 6.0, 6.0);
@ -45,7 +42,7 @@ const EdgeInsetsGeometry _kDefaultPadding =
///
/// ```dart
/// class FlutterDemo extends StatefulWidget {
/// FlutterDemo({Key key}) : super(key: key);
/// FlutterDemo({Key? key}) : super(key: key);
///
/// @override
/// _FlutterDemoState createState() => _FlutterDemoState();

5
packages/flutter/lib/src/cupertino/segmented_control.dart
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@ -11,9 +11,6 @@ import 'package:flutter/widgets.dart';
import 'theme.dart';
// Examples can assume:
// // @dart = 2.9
// Minimum padding from edges of the segmented control to edges of
// encompassing widget.
const EdgeInsetsGeometry _kHorizontalItemPadding = EdgeInsets.symmetric(horizontal: 16.0);
@ -141,7 +138,7 @@ class CupertinoSegmentedControl<T extends Object> extends StatefulWidget {
/// 1: Text('Child 2'),
/// };
///
/// int currentValue;
/// late int currentValue;
///
/// @override
/// Widget build(BuildContext context) {

5
packages/flutter/lib/src/cupertino/text_field.dart
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@ -16,9 +16,6 @@ import 'theme.dart';
export 'package:flutter/services.dart' show TextInputType, TextInputAction, TextCapitalization, SmartQuotesType, SmartDashesType;
// Examples can assume:
// // @dart = 2.9
const TextStyle _kDefaultPlaceholderStyle = TextStyle(
fontWeight: FontWeight.w400,
color: CupertinoColors.placeholderText,
@ -154,7 +151,7 @@ class _CupertinoTextFieldSelectionGestureDetectorBuilder extends TextSelectionGe
/// }
///
/// class _MyPrefilledTextState extends State<MyPrefilledText> {
/// TextEditingController _textController;
/// late TextEditingController _textController;
///
/// @override
/// void initState() {

3
packages/flutter/lib/src/physics/gravity_simulation.dart
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@ -5,8 +5,7 @@
import 'simulation.dart';
// Examples can assume:
// // @dart = 2.9
// AnimationController _controller;
// late AnimationController _controller;
/// A simulation that applies a constant accelerating force.
///

3
packages/flutter/lib/src/rendering/binding.dart
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@ -20,7 +20,6 @@ import 'view.dart';
export 'package:flutter/gestures.dart' show HitTestResult;
// Examples can assume:
// // @dart = 2.9
// dynamic context;
/// The glue between the render tree and the Flutter engine.
@ -221,7 +220,7 @@ mixin RendererBinding on BindingBase, ServicesBinding, SchedulerBinding, Gesture
/// Querying [PlatformDispatcher.platformBrightness].
///
/// ```dart
/// final Brightness brightness = WidgetsBinding.instance.platformDispatcher.platformBrightness;
/// final Brightness brightness = WidgetsBinding.instance!.platformDispatcher.platformBrightness;
/// ```
/// {@end-tool}
///

5
packages/flutter/lib/src/rendering/box.dart
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@ -13,9 +13,6 @@ import 'package:vector_math/vector_math_64.dart';
import 'debug.dart';
import 'object.dart';
// Examples can assume:
// // @dart = 2.9
// This class should only be used in debug builds.
class _DebugSize extends Size {
_DebugSize(Size source, this._owner, this._canBeUsedByParent) : super.copy(source);
@ -718,7 +715,7 @@ class BoxHitTestResult extends HitTestResult {
/// }
///
/// @override
/// bool hitTestChildren(BoxHitTestResult result, { Offset position }) {
/// bool hitTestChildren(BoxHitTestResult result, { required Offset position }) {
/// return result.addWithPaintTransform(
/// transform: _effectiveTransform,
/// position: position,

17
packages/flutter/lib/src/rendering/debug_overflow_indicator.dart
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@ -11,9 +11,6 @@ import 'package:flutter/foundation.dart';
import 'object.dart';
import 'stack.dart';
// Examples can assume:
// // @dart = 2.9
// Describes which side the region data overflows on.
enum _OverflowSide {
left,
@ -57,20 +54,20 @@ class _OverflowRegionData {
/// ```dart
/// class MyRenderObject extends RenderAligningShiftedBox with DebugOverflowIndicatorMixin {
/// MyRenderObject({
/// AlignmentGeometry alignment,
/// TextDirection textDirection,
/// RenderBox child,
/// AlignmentGeometry alignment = Alignment.center,
/// TextDirection? textDirection,
/// RenderBox? child,
/// }) : super.mixin(alignment, textDirection, child);
///
/// Rect _containerRect;
/// Rect _childRect;
/// late Rect _containerRect;
/// late Rect _childRect;
///
/// @override
/// void performLayout() {
/// // ...
/// final BoxParentData childParentData = child.parentData;
/// final BoxParentData childParentData = child!.parentData! as BoxParentData;
/// _containerRect = Offset.zero & size;
/// _childRect = childParentData.offset & child.size;
/// _childRect = childParentData.offset & child!.size;
/// }
///
/// @override

11
packages/flutter/lib/src/rendering/proxy_box.dart
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@ -28,9 +28,6 @@ export 'package:flutter/gestures.dart' show
PointerUpEvent,
PointerCancelEvent;
// Examples can assume:
// // @dart = 2.9
/// A base class for render boxes that resemble their children.
///
/// A proxy box has a single child and simply mimics all the properties of that
@ -3053,7 +3050,7 @@ class RenderRepaintBoundary extends RenderProxyBox {
///
/// ```dart
/// class PngHome extends StatefulWidget {
/// PngHome({Key key}) : super(key: key);
/// PngHome({Key? key}) : super(key: key);
///
/// @override
/// _PngHomeState createState() => _PngHomeState();
@ -3063,10 +3060,10 @@ class RenderRepaintBoundary extends RenderProxyBox {
/// GlobalKey globalKey = GlobalKey();
///
/// Future<void> _capturePng() async {
/// RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
/// RenderRepaintBoundary boundary = globalKey.currentContext!.findRenderObject()! as RenderRepaintBoundary;
/// ui.Image image = await boundary.toImage();
/// ByteData byteData = await image.toByteData(format: ui.ImageByteFormat.png);
/// Uint8List pngBytes = byteData.buffer.asUint8List();
/// ByteData? byteData = await image.toByteData(format: ui.ImageByteFormat.png);
/// Uint8List pngBytes = byteData!.buffer.asUint8List();
/// print(pngBytes);
/// }
///