createState method

@override State<Host<TModel>> createState()

Creates the mutable state for this widget at a given location in the tree.

Subclasses should override this method to return a newly created instance of their associated State subclass:

@override
State<SomeWidget> createState() => _SomeWidgetState();

The framework can call this method multiple times over the lifetime of a StatefulWidget. For example, if the widget is inserted into the tree in multiple locations, the framework will create a separate State object for each location. Similarly, if the widget is removed from the tree and later inserted into the tree again, the framework will call createState again to create a fresh State object, simplifying the lifecycle of State objects.

Implementation

@override
// ignore: no_logic_in_create_state
State<Host<TModel>> createState() {
  var widget = child;
  if (child == null) {
    assert(stateChildColl.isNotEmpty,
        'Host.stateChildColl is empty, make sure to use MultiHost.create()');
    widget = stateChildColl.removeLast();
  }
  return _HostState<TModel>(widget!);
}