freecodecamp-chengdu / web-conf Goto Github PK

Category Class:

import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;

Future<Category> fetchCatgeory() async {
  final response = await http.get("url");

  if (response.statusCode == 200) {
    return Category.fromJson(json.decode(response.body));
  } else {
    throw Exception('Failed to load category');
  }
}

class Category {
  final int id;
  final String title;

  Category({this.id, this.title});

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

}

HomePage Class:

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:munaw3_news/extra/json_file.dart';

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();

  final Future<Category> catg;

  HomePage({Key key, this.catg}) : super(key: key);

}

class _HomePageState extends State<HomePage> {

  _HomePageState();

  int a = 0;
  Future<Category> catg;

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    catg = fetchCatgeory();
  }
  bool isPressed = false;

  _pressed() {
    var newVal = true;
    if(isPressed) {
      newVal = false;
    } else {
      newVal = true;
    }

    setState((){
      isPressed = newVal;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: DefaultTabController(
        length: catg.toString().length,
        child: Scaffold(
          appBar: AppBar(
            title: Image.asset('assets/logo.png', fit: BoxFit.cover,),
            centerTitle: true,
            backgroundColor: Colors.grey[900],
            bottom: TabBar(

              tabs: [
                // Tab(text: catg[0],),
                // Tab(text: catg[1],),
                // Tab(text: catg[2],),
                // Tab(text: catg[3],)
              ],
            ),
      ),
      body: TabBarView(

        children: [
          // Tab(text: catg[0],),
          // Tab(text: catg[1],),
          // Tab(text: catg[2],),
          // Tab(text: catg[3],)
        ],

      ),
      bottomNavigationBar: BottomAppBar(
        clipBehavior: Clip.antiAlias,
        elevation: 0,
        color: Colors.grey[900],
        child: Column(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.end,
          children: <Widget>[
            Container(
              height: 5,
              width: double.infinity,
              color: Colors.grey[900],
            ),
            Padding(
              padding: const EdgeInsets.only(left: 8, right: 8),
              child: Container(
                height: 60,
                child: Align(
                  alignment: FractionalOffset.center,
                  child: new Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: <Widget>[
                      IconButton(icon: Icon(Icons.info), color: Colors.grey[600], iconSize: 30,
                                  disabledColor: Colors.white,
                                  onPressed: a==3 ? null : () => setState(() {
                                    a=3;
                                  })),

                      IconButton(icon: Icon(Icons.local_mall), color: Colors.grey[600], iconSize: 30,
                                  disabledColor: Colors.white,
                                  onPressed: a==2 ? null : () => setState(() {
                                    a=2;
                                  })),

                      IconButton(icon: Icon(Icons.bookmark), color: Colors.grey[600], iconSize: 30,
                                  disabledColor: Colors.white,
                                  onPressed: a==1 ? null : () => setState(() {
                                    a=1;
                                  })),

                      IconButton(icon: Icon(Icons.home), color: Colors.grey[600], iconSize: 30,
                                  disabledColor: Colors.white,
                                  onPressed: a==0 ? null : () => setState(() {
                                    a=0;
                                  })),
                    ],
                  ),
                ),
              ),
            ),

          ],
        ),
      ),
      ),),

    );
  }
}