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* Use actual exceptions rather than assertions containing code containing strings when trying to give messages to authors. * Introduce RenderingError which is an AssertionError that takes a string argument, to support the above. * Provide a BoxDimensions.hasBoundedWidth/hasBoundedHeight API. * Document BoxDimensions.isNormalized. * Provide more useful information when we assert isNormalized and find that it is false. * When finding the size is infinite, crawl the tree to figure out which render box is likely responsible for the infinite constraints. * Provide more information when size doesn't match the constraints. * Provide more information when intrinsic dimension methods violate the constraints. * Only spam a huge amount of information for the first exception from the rendering library. I've noticed a lot of people looking at the last exception printed rather than the first and that's very misleading -- after the rendering library hits an exception, all bets are off regarding what'll happen in the future. All kinds of asserts might fire. * Improve docs around the debug methods and flags for the above. * Make Block default to have no children. Previously, giving no children crashed with a confusing message about a null deref in an assert.
Flutter Examples
This directory contains several examples of using Flutter. Each of these is an individual Dart application package.
To run a sample with the flutter tool, run pub get inside its directory,
then run flutter start. (See the
getting started guide to install
the flutter tool.)
Available examples include:
-
Hello, world. The hello world app is a basic app that shows the text "hello, world."
-
Stocks. The stocks app is an example of a typical mobile app built using Flutter. The app shows a list of all the stocks in the NASDAQ.
-
Widgets. The widget apps demonstrate a number of Flutter widgets so you can experiment with them in a simple container. There is no main.dart in this directory because each file is a standalone sample. To run a particular file, use
flutter start -t filename.dart.