- trong file main.dart sửa lại mã nguồn như sau:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Food App with Navigation',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
body: Center(
child: Text('Food App with Navigation', style: TextStyle(fontSize: 20),),
),
),
);
}
}
- Tạo thư mục models ngang hàng thư mục main.dart.
- Tạo thư mục fake_data.dart ngang hàng thư mục main.dart.
import 'package:flutter/material.dart';
import './models/category.dart';
const FAKE_CATEGORIES = const [
Category(id: 1, content: 'Japanese\'s Foods', color: Colors.deepOrange),
Category(id: 2, content: 'Pizza', color: Colors.teal),
Category(id: 3, content: 'Humburgers', color: Colors.cyanAccent),
];
- Trong thư mục models tạo file Category.dart
import 'package:flutter/material.dart';
class Category {
//this is called "model"
final int id;
final String content;
final Color color;
const Category({
@required this.id,
@required this.content,
this.color});
}
- Tạo thư mục categories_page.dart ngang hàng thư mục main.dart
import 'package:flutter/material.dart';
class CategoriesPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
// TODO: implement build
return GridView(
children: <Widget>[
],
gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
maxCrossAxisExtent: 300,
childAspectRatio: 3/2,
crossAxisSpacing: 10,
mainAxisSpacing: 10
),
);
}
}
Hiển thị các món ăn
- Vào file main.dart
import 'package:flutter/material.dart';
import 'package:foodapp/categories_page.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Food App with Navigation',
theme: ThemeData(
primarySwatch: Colors.cyan,
),
home: Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text('Food\'s categories'),
),
body: CategoriesPage(
),
),
);
}
}
- Vào file category_item.dart
import 'package:flutter/material.dart';
import './models/category.dart';
class CategoryItem extends StatelessWidget{
Category category;
CategoryItem({required this.category});
@override
Widget build(BuildContext context) {
// TODO: implement build
Color _color = this.category.color;
return Container(
child: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
this.category.content,
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
color: Colors.white,
)
),
],
),
decoration: BoxDecoration(
gradient: LinearGradient(
colors:[
_color.withOpacity(0.8),
_color
],
begin: Alignment.topRight,
end: Alignment.bottomLeft
),
color: _color,
borderRadius: BorderRadius.circular(12)
),
),
);
}
}
- Vào file fake_data.dart
import 'package:flutter/material.dart';
import './models/category.dart';
const FAKE_CATEGORIES = const [
Category(id: 1, content: 'Japanese\'s Foods', color: Colors.deepOrange),
Category(id: 2, content: 'Pizza', color: Colors.teal),
Category(id: 3, content: 'Humburgers', color: Colors.pink),
Category(id: 4, content: 'Italian', color: Colors.blueAccent),
Category(id: 5, content: 'Milk & Yoghurt', color: Colors.deepPurple),
Category(id: 6, content: 'Vegetables', color: Colors.green),
Category(id: 7, content: 'Fruits', color: Colors.redAccent),
Category(id: 8, content: 'VietNamese\'s Foods', color: Colors.deepOrange),
Category(id: 9, content: 'Pizza hải sản', color: Colors.teal),
Category(id: 10, content: 'Humburgers ', color: Colors.pink),
Category(id: 11, content: 'Italian', color: Colors.blueAccent),
Category(id: 12, content: 'Milk & Yoghurt', color: Colors.deepPurple),
Category(id: 13, content: 'Vegetables', color: Colors.green),
Category(id: 14, content: 'Fruits', color: Colors.redAccent),
];
- Vào file category.dart
import 'package:flutter/material.dart';
class Category {
//this is called "model"
final int id;
final String content;
final Color color;
const Category({
required this.id,
required this.content,
required this.color
});
}
- Vào file categories_page.dart
import 'package:flutter/material.dart';
import 'package:foodapp/category_item.dart';
import 'package:foodapp/fake_data.dart';
class CategoriesPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
// TODO: implement build
return GridView(
padding: EdgeInsets.all(12),
children: FAKE_CATEGORIES.map((eachCategory)=>CategoryItem(category: eachCategory)).toList(),
gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
maxCrossAxisExtent: 300,
childAspectRatio: 3/2,
crossAxisSpacing: 10,
mainAxisSpacing: 10
),
);
}
}
- Build app lên điện thoại :
Cài đặt Theme và tuỳ biến Google Fonts style
Truy cập link sau : https://fonts.google.com/?query=sh
Tìm hai fonts ưa thích ví dụ Itim và Sunshiney tải về và giải nén ra
Tạo foder assets => fonts và coppy hai thư mục mới giải nén ra vào thư mục fonts như sau :
- Vào file main.dart
import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:foodapp/categories_page.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Food App with Navigation',
theme: ThemeData(
primarySwatch: Colors.cyan,
fontFamily: 'Itim',
textTheme: ThemeData.light().textTheme.copyWith(
bodyText1: TextStyle(
color: Color.fromRGBO(20, 52, 52, 1)
),
bodyText2: TextStyle(
color: Color.fromRGBO(20, 52, 52, 1)
),
subtitle1: TextStyle(
fontSize: 25,
color: Colors.white,
fontFamily: 'Sunshiney'
)
)
),
home: Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text('Food\'s categories'),
),
body: CategoriesPage(
),
),
);
}
}
- Vào file category_item.dart
import 'package:flutter/material.dart';
import './models/category.dart';
class CategoryItem extends StatelessWidget{
Category category;
CategoryItem({required this.category});
@override
Widget build(BuildContext context) {
// TODO: implement build
Color _color = this.category.color;
return Container(
child: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
this.category.content,
style: Theme.of(context).textTheme.subtitle1
),
],
),
decoration: BoxDecoration(
gradient: LinearGradient(
colors:[
_color.withOpacity(0.8),
_color
],
begin: Alignment.topRight,
end: Alignment.bottomLeft
),
color: _color,
borderRadius: BorderRadius.circular(12)
),
),
);
}
}
- Vào file pubspec.yaml:
name: foodapp
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.12.0 <3.0.0"
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^1.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
fonts:
- family: Itim
fonts:
- asset: assets/fonts/Itim/Itim-Regular.ttf
weight: 700
- family: Sunshiney
fonts:
- asset: assets/fonts/Sunshiney/Sunshiney-Regular.ttf
weight: 500
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
- Build app :
truy cập github xem mã nguồn:
https://github.com/Coder-DLU/flutter
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