setState method Null safety Notify the framework that the internal state of this object has changed. Whenever you change the internal state of a State object, make the change in a function that you pass to setState: setState(() { _myState = newValue; }); The provided callback is immediately called synchronously.
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setState is a way to dynamically change the UI . We call it inside the State Object class of the StatefulWidget. Calling setState marks the corresponding Widget dirty . When flutter builds the next frame (approx. every 16ms), it renders the Widget according to the latest values of the State Object.20 Haz 2021
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