What is refresh indicator in flutter?

RefreshIndicator is a widget in Flutter that supports Material’s swipe-to-refresh . It works by showing a circular progress indicator when the child’s Scrollable is overscrolled. If the user ends the scroll and the indicator has been dragged far enough, it will call onRefresh . You can define your own callback function.

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What is refresh indicator in flutter?

RefreshIndicator is a widget in Flutter that supports Material’s swipe-to-refresh . It works by showing a circular progress indicator when the child’s Scrollable is overscrolled. If the user ends the scroll and the indicator has been dragged far enough, it will call onRefresh . You can define your own callback function.

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How do controllers work in flutter?

In flutter, controllers are a means to give control to the parent widget over its child state . The main selling point of controllers is that they remove the need of a GlobalKey to access the widget State. This, in turn, makes it harder to do anti-pattern stuff and increase performances.

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