What is StatefulWidget LifeCycle?
The lifecycle has the following simplified steps :
createState()
: When we build a new StatefulWidget, this one calls createState()
right away and this override method must exist.
initState()
: It is the first method called after the Widget is created.This is our equivalent to onCreate()
and viewDidLoad()
didChangeDependencies()
: This method is called immediately after initState()
on the first time the widget is built.
build()
: This is called right after didChangeDependencies()
. All the GUI is rendered here and will be called every single time the UI needs to be rendered.
didUpdateWidget()
: It’ll be called once the parent Widget did a change and needs to redraw the UI.
deactivate()
: Framework calls this method whenever it removes this State object from the tree
dispose()
: It is called when this object and its State are removed from the tree permanently and will never build again.