stateList<T extends State<StatefulWidget>> method Null safety

Iterable<T> stateList<T extends State<StatefulWidget>>(
  1. Finder finder
)

The matching states in the widget tree.

Throws a StateError if any of the elements in finder match a widget that has no state.

  • Use state if you only expect to match one state.
  • Use firstState if you expect to match several but only want the first.

Implementation

Iterable<T> stateList<T extends State>(Finder finder) {
  TestAsyncUtils.guardSync();
  return finder.evaluate().map<T>((Element element) => _stateOf<T>(element, finder));
}