In flutter programming there two kind of widgets.
*STATELESS
*STATEFUL
But before we get into what Stateless and Stateful, we need to understand what is the State of this.
The simplest way to put it, State is something that can change within a widget.
Stateless widgets- This widgets never changes.
"Icons,Buttons,Icon button,Colors and text" are examples for stateless widget...
Stateful widgets- Dynamic,This widget can be change,Its appearance in response to event trigger by user interactions.
when STF(stateful widget) receives data.
Checkbox,Radio,Slider,Form,Text Field are some examples for STF(stateful widget).
Follow this 4 step and create Stateful widgets.
Step 1: Decide which object manages the widget’s state
Step 2: Subclass Stateful Widget
Step 3: Subclass State
Step 4: Plug the stateful widget into the widget tree
More Detail visite.:-https://flutter.dev/docs/development/ui/interactive
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