How to Display SnackBar In Flutter ?

· 2 min read
Display SnackBar In Flutter
Display SnackBar In Flutter

SnackBar Widget is a widget to show a lightweight message at the bottom of the screen. It can also contain an optional action. In this article, we will go through How to Display SnackBar in Flutter?

How to Display SnackBar In Flutter?

To Display SnackBar in Flutter kindly follow the below instructions.

Define a scaffold key like below:

final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();

Create a Custom function like below:

void showInSnackBar(String value) {
    _scaffoldKey.currentState.showSnackBar(new SnackBar(content: new Text(value)));

Now set up a key for the scaffold-like key: _scaffoldKey

Widget build(BuildContext context) {
 return new Scaffold(
   key: _scaffoldKey,
   body: new SafeArea(

To initialize a Snackbar on initState() you can execute a function after the layout is built.

void initState() {
    .addPostFrameCallback((_) => _scaffoldKey.currentState.showSnackBar(SnackBar(content: Text("Yay a SnackBar")));}

We will get output like below:


In this article, We have been through How to show SnackBar In Flutter?

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