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 .
Read moreHow do you call a variable from another class in flutter?
Approach 1: Create a ValueChanged from Parent Widget add pass to FirstWidget, when change couter -> call ValueChanged to send update to Parent Widget, Parent will update state for second Widget.
Read moreWhat are classes in flutter?
And a class is a blueprint for an object . That is, a class describes an object that you can create. The object itself is what holds any specific data and logic. For example, a Cat class might look like this: class Cat { String name; String color; }
Read moreHow do you call a function from another class in flutter?
To call a void function from another file in Flutter, what you have to do are:
Read moreWhat are functions in flutter?
A function (also might be referenced to as method in the context of an object) is a subset of an algorithm that is logically separated and reusable . It can return nothing (void) or return either a built-in data type or a custom data type. It can also have no parameters or any number of parameters.
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