破壞性改動 (Breaking changes)

正如 破壞性改動策略 中描述的，我們會不定期地釋出關於破壞性改動的遷移指南。

以下是可用的遷移指南，它們按發行版本分類並按字母順序排列。

尚未釋出到穩定版

• Migrate of to non-nullable return values, and add maybeOf
• Deprecated API removed after v3.3
• iOS FlutterViewController splashScreenView made nullable
• ThemeData’s toggleableActiveColor property has been deprecated

Released in Flutter 3.3

• Adding ImageProvider.loadBuffer
• Default PrimaryScrollController on Desktop
• Trackpad gestures can trigger GestureRecognizer

Released in Flutter 3

• Deprecated API removed after v2.10
• Page transitions replaced by ZoomPageTransitionsBuilder
• Migrate useDeleteButtonTooltip to deleteButtonTooltipMessage of Chips

已經在 Flutter 2.10 中釋出

• Deprecated API removed after v2.5
• Raw images on Web uses correct origin and colors
• Required Kotlin version
• Scribble Text Input Client

已經在 Flutter 2.5 中釋出

• Default drag scrolling devices
• Deprecated API removed after v2.2
• Change the enterText method to move the caret to the end of the input text
• GestureRecognizer Cleanup
• Introducing package:flutter_lints
• Replace AnimationSheetBuilder.display with collate
• ThemeData’s accent properties have been deprecated
• Transition of platform channel test interfaces to flutter_test package
• Using HTML slots to render platform views in the web

在 2.2 版本中回退的改動

以下重要改動在 Flutter 2.2 中已被回退。

iOS 端和 Android 端的網路策略
引入版本：2.0.0
回退版本：2.2.0（建議）

釋出於 Flutter 2.2

• Default Scrollbars on Desktop

釋出於 Flutter 2

• Added BuildContext parameter to TextEditingController.buildTextSpan
• Android ActivityControlSurface attachToActivity signature change
• Android FlutterMain.setIsRunningInRobolectricTest testing API removed
• Clip behavior
• Deprecated API removed after v1.22
• Dry layout support for RenderBox
• Eliminating nullOk Parameters
• Material Chip button semantics
• SnackBars managed by the ScaffoldMessenger
• TextSelectionTheme migration
• Use maxLengthEnforcement instead of maxLengthEnforced
• Transition of platform channel test interfaces to flutter_test package

釋出於 Flutter 1.22

• Android v1 embedding app and plugin creation deprecation
• Cupertino icons 1.0.0
• The new Form, FormField auto-validation API

釋出於 Flutter 1.20

• Actions API revision
• Adding TextInputClient.currentAutofillScope property
• New Buttons and Button Themes
• Dialogs’ Default BorderRadius
• More Strict Assertions in the Navigator and the Hero Controller Scope
• The Route Transition record and Transition delegate updates
• The RenderEditable needs to be laid out before hit testing
• Reversing the dependency between the scheduler and services layer
• Semantics Order of the Overlay Entries in Modal Routes
• showAutocorrectionPromptRect method added to TextInputClient
• TestWidgetsFlutterBinding.clock
• TextField requires MaterialLocalizations

釋出於 Flutter 1.17

• Adding ‘linux’ and ‘windows’ to TargetPlatform enum
• Annotations return local position relative to object
• Container color optimization
• CupertinoTabBar requires Localizations parent
• Generic type of ParentDataWidget changed to ParentData
• ImageCache and ImageProvider changes
• ImageCache large images
• MouseTracker moved to rendering
• MouseTracker no longer attaches annotations
• Nullable CupertinoTheme.brightness
• Rebuild optimization for OverlayEntries and Routes
• Scrollable AlertDialog
• TestTextInput state reset
• TextInputClient currentTextEditingValue
• The forgetChild() method must call super
• The Route and Navigator refactoring
• FloatingActionButton and ThemeData’s accent properties