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@kuznetsovin kuznetsovin/main.dart
Last active May 21, 2019

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Flutter test app
import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:image_picker/image_picker.dart';
void main() => runApp(MyApp());
// класс основного приложения
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Товары',
theme: ThemeData(primarySwatch: Colors.blue),
home: new ListDisplay(),
);
}
}
class ListDisplay extends StatefulWidget {
@override
_ListDisplayState createState() => new _ListDisplayState();
}
class _ListDisplayState extends State<ListDisplay> {
@override
Widget build(BuildContext context) {
var futureBuilder = new FutureBuilder(
future: fetchProducts(),
builder: (BuildContext context, AsyncSnapshot snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.none:
case ConnectionState.waiting:
return new Text('loading...');
default:
if (snapshot.hasError)
return new Text('Error: ${snapshot.error}');
else
return createListView(snapshot.data.products);
}
},
);
return new Scaffold(
appBar: new AppBar(title: new Text("Товары")),
body: futureBuilder,
floatingActionButton: FloatingActionButton(
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => NewProductForm()),
);
},
child: Icon(Icons.add),
),
);
}
}
Widget createListView(List items) {
return new ListView(
shrinkWrap: true,
primary: false,
children: items.map((productInfo) {
return ListTile(
leading: Tab(
icon: Image.network('http://127.0.0.1:8080${productInfo.img}')),
//загружаем картинку как иконку
title: Text(productInfo.name),
subtitle: Text('Цена: ${productInfo.price}'),
);
}).toList());
}
Future<ProductList> fetchProducts() async {
final response =
await http.get('http://127.0.0.1:8080/api/products', headers: {
HttpHeaders.authorizationHeader:
"Bearer ohhi7Maewo9oxei1naKahfeiM1luvua5ip8ohbael8ieteigecaod0Wae1xaZahz"
});
if (response.statusCode == 200) {
// If the call to the server was successful, parse the JSON
return ProductList.fromJson(json.decode(response.body));
} else {
// If that call was not successful, throw an error.
throw Exception('Failed to load post');
}
}
class Product {
final int id;
final String name;
final String img;
final String price;
Product({this.id, this.name, this.img, this.price});
factory Product.fromJson(Map<String, dynamic> json) {
return Product(
id: json['id'],
name: json['name'],
img: json['img'],
price: json['price'].toString(),
);
}
}
class ProductList {
final List<Product> products;
ProductList({this.products});
factory ProductList.fromJson(List<dynamic> parsedJson) {
List<Product> products = new List<Product>();
products = parsedJson.map((i) => Product.fromJson(i)).toList();
return new ProductList(
products: products,
);
}
}
class NewProductForm extends StatefulWidget {
@override
_NewProductFormState createState() {
return _NewProductFormState();
}
}
class _NewProductFormState extends State<NewProductForm> {
final _formKey = GlobalKey<FormState>();
TextEditingController nameFieldController = new TextEditingController();
TextEditingController priceFieldController = new TextEditingController();
File galleryFile;
imageSelectorGallery() async {
galleryFile = await ImagePicker.pickImage(source: ImageSource.gallery);
setState(() {});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("Новый продукт")),
body: Form(
key: _formKey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
new RaisedButton(
child: new Text('Выбрать фото'),
onPressed: imageSelectorGallery,
),
new SizedBox(
height: 200.0,
width: 300.0,
child: galleryFile == null
? new Text('Не выбрано картинки')
: new Image.file(galleryFile),
),
new TextFormField(
controller: nameFieldController,
decoration: const InputDecoration(
labelText: 'Название продукта',
),
validator: (value) {
if (value.isEmpty) {
return 'Введите название продукта';
}
},
),
new TextFormField(
controller: priceFieldController,
decoration: const InputDecoration(
labelText: 'Цена',
),
validator: (value) {
if (value.isEmpty) {
return 'Укажите цену';
}
},
),
new Padding(
padding: const EdgeInsets.symmetric(vertical: 16.0),
child: RaisedButton(
onPressed: () {
if (_formKey.currentState.validate()) {
var uri = Uri.parse("http://127.0.0.1:8080/api/products");
var request = new http.MultipartRequest("POST", uri);
request.headers.addAll({
HttpHeaders.authorizationHeader:
"Bearer ohhi7Maewo9oxei1naKahfeiM1luvua5ip8ohbael8ieteigecaod0Wae1xaZahz"
});
request.fields['name'] = nameFieldController.text;
request.fields['price'] = priceFieldController.text;
request.files.add(http.MultipartFile.fromBytes(
'file', galleryFile.readAsBytesSync()));
request.send().then((response) {
if (response.statusCode == 201) {
Navigator.pop(context);
} else {
print(response.reasonPhrase);
}
});
}
},
child: Text('Сохранить'),
),
),
],
),
),
);
}
}
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