Why is state in Flutter?

State is information that (1) can be read synchronously when the widget is built and (2) might change during the lifetime of the widget. It is the responsibility of the widget implementer to ensure that the State is promptly notified when such state changes, using State. setState.

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Is setState good in Flutter?

When we want to change the UI of the screen . We don’t need to call setState every time we change a variable. We call setState only when we want the change in a variable to reflect on the UI of the screen. For instance, say you have a form containing a text field and a button to submit it.

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Should I use provider in Flutter?

One of the main reasons to prefer Provider over Statefulwidget s is that, using Provider , you will rebuild only the widgets that needs that value (the Consumers ) while the other will not be rebuilt . Instead when you call setState the whole build function of the widget will be called.

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