我試圖展示模型的細節，就像我們按下一個產品然后我們可以看到那個產品的細節。就像那樣，我想讓你展示我的模型。
這是模型：
class DisplayModel {
String? status;
List<Results>? results;
DisplayModel({this.status, this.results});
DisplayModel.fromJson(Map<String, dynamic> json) {
status = json['status'];
if (json['results'] != null) {
results = <Results>[];
json['results'].forEach((v) {
results!.add(new Results.fromJson(v));
});
}
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['status'] = this.status;
if (this.results != null) {
data['results'] = this.results!.map((v) => v.toJson()).toList();
}
return data;
}
}
class Results {
int? id;
List<Products>? products;
List<Catalogs>? catalogs;
String? name;
Null? description;
String? category;
String? templateName;
Null? bannerText;
Results(
{this.id,
this.products,
this.catalogs,
this.name,
this.description,
this.category,
this.templateName,
this.bannerText});
Results.fromJson(Map<String, dynamic> json) {
id = json['id'];
if (json['products'] != null) {
products = <Products>[];
json['products'].forEach((v) {
products!.add(new Products.fromJson(v));
});
}
if (json['catalogs'] != null) {
catalogs = <Catalogs>[];
json['catalogs'].forEach((v) {
catalogs!.add(new Catalogs.fromJson(v));
});
}
name = json['name'];
description = json['description'];
category = json['category'];
templateName = json['template_name'];
bannerText = json['banner_text'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
if (this.products != null) {
data['products'] = this.products!.map((v) => v.toJson()).toList();
}
if (this.catalogs != null) {
data['catalogs'] = this.catalogs!.map((v) => v.toJson()).toList();
}
data['name'] = this.name;
data['description'] = this.description;
data['category'] = this.category;
data['template_name'] = this.templateName;
data['banner_text'] = this.bannerText;
return data;
}
}
class Products {
int? id;
String? name;
Null? unit;
String? price;
Null? salePrice;
String? image;
Null? category;
Null? badge;
Products(
{this.id,
this.name,
this.unit,
this.price,
this.salePrice,
this.image,
this.category,
this.badge});
Products.fromJson(Map<String, dynamic> json) {
id = json['id'];
name = json['name'];
unit = json['unit'];
price = json['price'];
salePrice = json['sale_price'];
image = json['image'];
category = json['category'];
badge = json['badge'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['name'] = this.name;
data['unit'] = this.unit;
data['price'] = this.price;
data['sale_price'] = this.salePrice;
data['image'] = this.image;
data['category'] = this.category;
data['badge'] = this.badge;
return data;
}
}
class Catalogs {
int? id;
Null? name;
Null? unit;
Null? price;
Null? salePrice;
String? image;
Null? video;
Null? badge;
Catalogs(
{this.id,
this.name,
this.unit,
this.price,
this.salePrice,
this.image,
this.video,
this.badge});
Catalogs.fromJson(Map<String, dynamic> json) {
id = json['id'];
name = json['name'];
unit = json['unit'];
price = json['price'];
salePrice = json['sale_price'];
image = json['image'];
video = json['video'];
badge = json['badge'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['name'] = this.name;
data['unit'] = this.unit;
data['price'] = this.price;
data['sale_price'] = this.salePrice;
data['image'] = this.image;
data['video'] = this.video;
data['badge'] = this.badge;
return data;
}
}
這是我的控制器：
List<DisplayModel> _displays = [];
Future<bool> getDisplays() async {
var url = Uri.parse(
"https://digital-display.betafore.com/api/v1/digital-display/displays/");
var token = localStorage.getItem('access');
try {
http.Response response = await http.get(url, headers: {
"Authorization":
"Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiYWNjZXNzIiwiZXhwIjoxNjY3NzYwOTY1LCJpYXQiOjE2Njc2NzQ1NjUsImp0aSI6ImE1ZjAyOTJlYTE1MjRhNDM5YzI2YWYwZGQzNjA3YjZlIiwiaWQiOjV9.yjKKzalzRvSrSiSBUhZtZVg3wBy_o7P2Wvy7sbMOOT0"
});
// var data = json.decode(response.body) as List;
// List<DisplayModel> temp = [];
// for (var element in data) {
// DisplayModel displayModel = DisplayModel.fromJson(data);
// temp.add(displayModel);
// }
var data = json.decode(response.body);
List<DisplayModel> temp = [];
DisplayModel displayModel = DisplayModel.fromJson(data);
temp.add(displayModel);
print("length = ${temp[0].results?.length}");
_displays = temp;
notifyListeners();
return true;
} catch (exception) {
log(exception.toString());
return false;
}
}
List<DisplayModel> get displays {
return [..._displays];
}
DisplayModel singleDisplay(int id) {
return _displays.firstWhere((element) => element.results);
}
我試圖這樣獲取：
DisplayModel singleDisplay(int id) {
return _displays.firstWhere((element) => element.results![0].id == id);
}
但我只得到第一個而不是其他的。你能告訴我我該怎么做嗎？
這是我想展示細節的前端：
import 'package:digitaldisplay/controllers/DisplayController.dart';
import 'package:digitaldisplay/models/DisplayModel.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
class ShowDisplay extends StatelessWidget {
static const routeName = "/show-display";
const ShowDisplay({super.key});
@override
Widget build(BuildContext context) {
final displayId = ModalRoute.of(context)!.settings.arguments;
final display =
Provider.of<DisplayController>(context).singleDisplay(displayId as int);
return Scaffold(
appBar: AppBar(),
body: Container(child: Text(display.results![0].name as String)),
);
}
}
這是我如何重定向到顯示頁面的代碼：
import 'package:digitaldisplay/views/screens/ShowDisplay.dart';
import 'package:flutter/material.dart';
import 'package:responsive_toolkit/responsive_toolkit.dart';
class DisplayCard extends StatelessWidget {
final int id;
final String displayName;
final String displayImage;
// final String location;
// final String displayStyle;
// final String displayImage;
DisplayCard(
{required this.displayName,
required this.displayImage,
required this.id});
// const DisplayCard({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
final ButtonStyle buttonStyle1 = ElevatedButton.styleFrom(
backgroundColor: Colors.black,
shape: const StadiumBorder(),
);
final ButtonStyle buttonStyle2 = ElevatedButton.styleFrom(
backgroundColor: Color(0xFFc3232a),
shape: const StadiumBorder(),
);
return InkWell(
onTap: () {
Navigator.of(context).pushNamed(ShowDisplay.routeName, arguments: id);
},
child: Container(
margin: const EdgeInsets.all(10.0),
alignment: Alignment.center,
height: 300.0,
width: double.infinity,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
boxShadow: const [
BoxShadow(
color: Color(0xFFffffff),
//offset: Offset(2, 2),
blurRadius: 0.5,
spreadRadius: 1.0,
),
]),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
//mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: 55.0,
width: 120.0,
//color: Colors.black,
child: const Padding(
padding: EdgeInsets.all(8.0),
child: Card(
//margin: EdgeInsets.all(10.0),
color: Colors.black,
elevation: 10.0,
child: Padding(
padding: EdgeInsets.all(8.0),
child: Text(
"Dhanmondi",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontSize: 12.0,
fontWeight: FontWeight.bold,
),
),
),
),
),
),
Container(
height: 55.0,
width: 120.0,
//color: Colors.black,
child: Padding(
padding: EdgeInsets.all(8.0),
child: Card(
//margin: EdgeInsets.all(10.0),
color: Colors.black,
elevation: 10.0,
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
displayName,
textAlign: TextAlign.center,
style: const TextStyle(
color: Colors.white,
fontSize: 12.0,
fontWeight: FontWeight.bold,
),
),
),
),
),
),
],
),
Image.network(
"https://digital-display.betafore.com/$displayImage",
fit: BoxFit.cover,
width: double.infinity,
height: 250,
),
Container(height: 20),
Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
ElevatedButton(
onPressed: () {},
child: Text("Edit Display"),
style: buttonStyle1,
),
ElevatedButton(
onPressed: () {},
child: Text("View Display"),
style: buttonStyle2,
),
],
),
],
),
),
);
}
}
這就是我傳遞資料的方式
Flexible(
child: Consumer<DisplayController>(
builder: (context, value, child) {
//log('${value.displays[0].results?.length.toString()}');
return GridView.count(
crossAxisCount: 4,
children: List.generate(
value.displays.isNotEmpty
? value.displays[0].results!.length
: 0, (i) {
return DisplayCard(
displayName: value.displays[0].results![i].name as String,
displayImage: value
.displays[0].results![i].catalogs![0].image as String,
id: value.displays[0].results![i].id as int,
);
}),
);
},
),
),
uj5u.com熱心網友回復：
你的singleDisplay方法不對。您正在檢查物件的第一個id物件的 id，而不是物件。DisplayModelResult_displays[0].results
_displays.firstWhere((element) => element.results![0].id == id)
它應該是：
Results singleDisplay(int id) {
return _displays[0].results!.firstWhere((element) => element.id == id);
}
另外，那么您需要更新：
Container(child: Text(display.results![0].name as String))
至：
Container(child: Text(display.name as String))
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/529387.html
標籤：扑镖
上一篇：顫動無法理解為什么它不回傳api