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Usages of ParagraphConstraints (from dart:ui) whose constructor could be const as of flutter/engine#7346 are currently marked // ignore:prefer_const_constructors in the framework until all Google-internal embedders have been updated to an engine version that includes the above change. These were initially updated in engine roll flutter/flutter#26252, but broke internal embedders. We should re-enable use of the const constructor in those cases once internal embedders are updated. See: https://github.com/flutter/flutter/issues/26390
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