setState Flutter

The state allows React components to change their output over time in response to user actions, network responses, etc, without violating their rules . It can be initialized in the constructor of a React component and afterward, can be accessed via the React component’s class instance with the this object.

You can’t the way you have attempted but technically yes, you can have a function that returns the desired state you want initialised in your constructor.

You can’t the way you have attempted but technically yes, you can have a function that returns the desired state you want initialised in your constructor.

Syntax: We can use setState() to change the state of the component directly as well as through an arrow function . Example 1: Updating single attribute. We set up our initial state value inside constructor function and create another function updateState() for updating the state.24 Mar 2021

Changing the state Object To change a value in the state object, use the this. setState() method. When a value in the state object changes, the component will re-render, meaning that the output will change according to the new value(s).

To update our state, we use this. setState() and pass in an object . This object will get merged with the current state. When the state has been updated, our component re-renders automatically.