How to Use setState In Flutter?? Calling setState notifies the framework that the internal state of this object has changed in a way that might impact the user interface in this subtree, which causes the framework to schedule a build for this State object.
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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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