
fuchsia_tester.dart still assumes Dart 1. Previously, it ran tests directly from source, flutter_platform.dart automatically runs a kernel compile when operating in Dart 2 mode, but this assumes a functional Dart SDK is available in the artifacts directly, and fuchsia_tester.dart mocks out the artifacts directory with an empty temp dir. Remaining work is: 1. Get the frontend server building as a dependency on Fuchsia. 2. Patch fuchsia_tester.dart to use a valid Dart SDK and frontend server. This also reverts migration to Dart 2 typedef syntax. This reverts commit 6c56bb2. (#18362) This reverts commit 3daebd0. (#18316)
Examples of Flutter's layered architecture
This directory contains a number of self-contained examples that illustrate Flutter's layered architecture.
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raw/ These examples show how to program against the lowest layer of the system. They manually receive input packets and construct composited scenes.
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rendering/ These examples use Flutter's render tree to structure your app using a retained tree of visual objects. These objects coordinate to determine their size and position on screen and to handle events.
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widgets/ These examples use Flutter's widgets to build more elaborate apps using a reactive framework.
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services/ These examples use services available in Flutter to interact with the host platform.
To run each example, specify the demo file on the flutter run
command line, for example:
flutter run raw/spinning_square.dart
flutter run rendering/spinning_square.dart
flutter run widgets/spinning_square.dart