renderObject<T extends RenderObject> method
- FinderBase<
Element> finder
The render object of the matching widget in the widget tree.
Throws a StateError if finder
is empty or matches more than
one widget (even if they all have the same render object).
- Use firstRenderObject if you expect to match several render objects but only want the first.
- Use renderObjectList if you expect to match several render objects and want all of them.
Implementation
T renderObject<T extends RenderObject>(finders.FinderBase<Element> finder) {
TestAsyncUtils.guardSync();
return finder.evaluate().single.renderObject! as T;
}