How do I use setState in widget flutter?

When you change the state of a Stateful Widget, use setState() to cause a rebuild of the widget and its descendants . You don’t need to call setState() in the constructor or initState() of the widget, because build() will be run afterward anyway. Also don’t call setState() in synchronous code inside build().28 May 2021

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Because we can’t call setState() directly in the initState method , we can’t call it from a function called by initState either. Unless this function is asynchronous and the setState call is made after the first await.16 May 2021

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