dispose()
Also written: initState
The `State` method that runs once when a widget is removed for good; free controllers there and then call `super.dispose()`. Its partner `initState()` runs once when the state is created.
Also written: initState
The `State` method that runs once when a widget is removed for good; free controllers there and then call `super.dispose()`. Its partner `initState()` runs once when the state is created.