What's new in Flutter 3.7

Replaced parameters for customizing context menus with a generic widget builder

Context menus, or text selection toolbars, are the menus that show up when long pressing or right clicking on text in Flutter, and they show options like **Cut**, **Copy**, **Paste**, and **Select all**. Previously, it was only possible to narrowly customize them using `ToolbarOptions` and `TextSelectionControls`. Now, they have been made composable using widgets, just like everything else in Flutter, and the specific configuration parameters have been deprecated.

iOS FlutterViewController splashScreenView made nullable

The `FlutterViewController` property `splashScreenView` has been changed from `nonnull` to `nullable`.

Migrate of to non-nullable return values, and add maybeOf

This migration guide describes conversion of code that uses various static `of` functions to retrieve information from a context that used to return nullable values, but now return non-nullable values.

Migrate a Windows project to support dark title bars

How to update a Windows project to support dark title bars

Deprecated API removed after v3.3

In accordance with Flutter's Deprecation Policy, deprecated APIs that reached end of life after the 3.3 stable release have been removed.

Removed RouteSettings.copyWith

The `RouteSettings.copyWith` method is removed, and apps that use it need to use the constructor to create a new `RouteSettings` instance instead.

ThemeData's toggleableActiveColor property has been deprecated

The Material widgets `Switch`, `SwitchListTile`, `Checkbox`, `CheckboxListTile`, `Radio`, `RadioListTile` now use `ColorScheme.secondary` color for their toggleable widget. `ThemeData.toggleableActiveColor` is deprecated and will eventually be removed.

- Fixes an issue where iOS and MacOS fail to build when targeting low deployment targets when using xCode 14.3.

- Fixes mobile device VM crashes caused by particular use of RegExp on mobile devices.

- Fixes a crash when using `flutter doctor --android-licenses` on macOS.

- [Impeller] Flutter apps may crash when some clip operations are used.

- [Impeller] App crashes due to invalid textures when using impeller.

- Flutter tool crashes when attempting to update the artifact cache.

- VM crashes when mixing the use of double and float calculations in debug/JIT configuration.

- Compiler may crash when attempting to inline a method with lots of optional parameters with distinct default values.

- Support Gradle 8

- Fix Xcode 14.3 will not build when plugin transitive dependencies have a low deployment target

- Fix orientation preferences on iOS 16+

- Fixes an issue where orientation preferences are not respected on iOS 16 and above.

- Clarify errors around Java/Gradle incompatibility

- Clarify errors around Java/Gradle incompatibility.

- Fixes an issue where upgrading to Xcode 14.3 breaks the ability to publish iOS and macOS applications.

- Fixes a false `Out of Memory` exception causing slowdowns.

- Fixes an issue where the `Toolbar` widget is incorrectly positioned when inside of a textfield in the Appbar.

- Fixes an issue where Android users can not use add2app because it can not locate build/host/apk/app-debug.apk.

engine/120455

- Improve performance of Dart Analysis Server by limiting the analysis context to 1.

- Update DDC test and builder configuration

- Fixes an issue where Flutter is unable to find the current JDK in specific versions of Android Studio.

- Apple Pencil writes on Flutter apps instead of scrolling when outside of a text field.

- Flutter web apps will not load if accessed through any other path than `/`.