after_layout 1.0.4
after_layout: ^1.0.4 copied to clipboard
Execute code after the first layout of your widget has been performed, i.e. after the first frame has been displayed.
import 'package:flutter/material.dart';
import 'package:after_layout/after_layout.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'After Layout - Good Example',
home: new HomeScreen(),
);
}
}
class HomeScreen extends StatefulWidget {
@override
HomeScreenState createState() => new HomeScreenState();
}
class HomeScreenState extends State<HomeScreen> with AfterLayoutMixin<HomeScreen> {
@override
Widget build(BuildContext context) {
return new Scaffold(body: new Container(color: Colors.red));
}
@override
void afterFirstLayout(BuildContext context) {
// Calling the same function "after layout" to resolve the issue.
showHelloWorld();
}
void showHelloWorld() {
showDialog(
context: context,
builder: (context) => new AlertDialog(
content: new Text('Hello World'),
actions: <Widget>[
new FlatButton(
child: new Text('DISMISS'),
onPressed: () => Navigator.of(context).pop(),
)
],
),
);
}
}