invalidateMeasurement

Has the container measure this node's component again and lay it out by that measure. Called while a layout pass of the container measures the component, this does nothing: the running pass lays the component out by the measure it runs. Otherwise it takes effect at once, or, while a layout of the container or of a container around it may be running, once the running event is over, unless a layout pass of the container has measured the component since. A request made from a measure that a size query runs therefore leaves the size that query answered standing where a layout pass of the container measures the component after it. Does nothing before the container has received the node.