Managing State in Flutter

Sep 22 2022 · Dart 2.17, Flutter 3.0, Android Studio Chipmunk

Part 2: Use Provider

10. Add a Simple Provider

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Previous episode: 09. Understand Provider Next episode: 11. Use a Change Provider

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Now that you have an understanding of Provider, it’s time to put it to the test. We’re going to create a widget aptly called Provider. This widget provides two important methods, create and dispose.

provider: ^6.0.3

import 'package:provider/provider.dart';
import 'models/pillar.dart';

body: Provider<Pillar>(
    child: const TutorialsPage()),

create: (context) =>
                Pillar(type: PillarType.flutter, articleCount: 115),

import 'package:provider/provider.dart';
import '../models/pillar.dart';

final pillar = Provider.of<Pillar>(context);

children: <Widget>[
  const Center(
    child: TutorialWidget(),
  ),
  Padding(
    padding: const EdgeInsets.only(top: 24.0),
    child: Text(
      'Total Tutorials: ${pillar.articleCount}',
      style: const TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
    ),
  )
],

import 'package:provider/provider.dart';
import '../models/pillar.dart';

final pillar = Provider.of<Pillar>(context);

return Stack(
  children: [
    InkWell(
      onTap: () {
        pillar.increaseArticleCount();
      },
      child:
          Image.asset('assets/images/${pillar.type.imageName}', width: 110, height: 110),
    ),
    Positioned(
      bottom: 2,
      child: CircleAvatar(
        backgroundColor: Colors.blue,
        child: Text(pillar.articleCount.toString()),
      ),
    )
  ],
);