flutter_const 0.0.1

A Flutter package which lots of constant widget and functions which widely used in the development.

example/lib/main.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_const/flutter_const.dart';
import 'package:flutter_const/server/api_helper.dart';

// Model Class
class Album {
  final int userId;
  final int id;
  final String title;

  Album({
    required this.userId,
    required this.id,
    required this.title,
  });

  factory Album.fromJson(Map<String, dynamic> json) {
    return Album(
      userId: json['userId'],
      id: json['id'],
      title: json['title'],
    );
  }
}

// fetch data
Future<Album> fetchAlbum() async {
  ApiBaseHelper _helper = ApiBaseHelper();
  final response = await _helper.get(
      baseurl: 'jsonplaceholder.typicode.com', url: 'albums/2');
  print(response);
  // For Single Item
  return Album.fromJson(response);
  // return response.map<Album>((json) => Album.fromJson(json)).toList();
}

// root
void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

// First Screen
class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    FcTextStyle textStyle = FcTextStyle();
    return Scaffold(
      appBar: AppBar(
        title: Text("First Screen"),
      ),
      body: Container(
        width: double.infinity,
        padding: EdgeInsets.all(12),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: <Widget>[
            ElevatedButton(
                onPressed: () {
                  FcNavigator().push(context, screen: SecondPage());
                },
                child: Text(
                  'move to second page',
                  style: textStyle.buttonWText(context),
                ))
          ],
        ),
      ),
    );
  }
}

// Second Screen
class SecondPage extends StatefulWidget {
  const SecondPage({Key? key}) : super(key: key);

  @override
  _SecondPageState createState() => _SecondPageState();
}

class _SecondPageState extends State<SecondPage> {
  late Future<Album> futureAlbum;
  @override
  void initState() {
    futureAlbum = fetchAlbum();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    FcTextStyle textStyle = FcTextStyle();
    return Scaffold(
      appBar: AppBar(
        title: Text("Second Screen"),
      ),
      body: Container(
        width: double.infinity,
        child: Center(
          child: FutureBuilder<Album>(
            future: futureAlbum,
            builder: (context, snapshot) {
              if (snapshot.hasData) {
                return Text(snapshot.data!.title,style: textStyle.bodyBBText(context),);
              } else if (snapshot.hasError) {
                return Text("${snapshot.error}");
              }
              // By default, show a loading spinner.
              return CircularProgressIndicator();
            },
          ),

        ),
      ),
    );
  }
}