在這里，我嘗試使用flutter http包從api中獲取所有資料。我收到一個錯誤
“型別‘int’不是‘String’型別的子型別？”
這是我試圖從中獲取資料的鏈接
https://wrestlingworld.co/wp-json/wp/v2/posts/128354
這是我的模型
class NewsModel {
int? id;
String? date;
String? slug;
String? status;
Title? title;
Title? content;
List<OgImage>? ogImage;
String? author;
NewsModel(
{this.id,
this.date,
this.slug,
this.status,
this.title,
this.content,
this.ogImage,
this.author});
NewsModel.fromJson(Map<String, dynamic> json) {
id = json['id'];
date = json['date'];
slug = json['slug'];
status = json['status'];
title = json['title'] != null ? new Title.fromJson(json['title']) : null;
content =
json['content'] != null ? new Title.fromJson(json['content']) : null;
if (json['og_image'] != null) {
ogImage = <OgImage>[];
json['og_image'].forEach((v) {
ogImage!.add(new OgImage.fromJson(v));
});
}
author = json['author'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['date'] = this.date;
data['slug'] = this.slug;
data['status'] = this.status;
if (this.title != null) {
data['title'] = this.title!.toJson();
}
if (this.content != null) {
data['content'] = this.content!.toJson();
}
if (this.ogImage != null) {
data['og_image'] = this.ogImage!.map((v) => v.toJson()).toList();
}
data['author'] = this.author;
return data;
}
}
class Title {
String? rendered;
Title({this.rendered});
Title.fromJson(Map<String, dynamic> json) {
rendered = json['rendered'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['rendered'] = this.rendered;
return data;
}
}
class OgImage {
String? url;
OgImage({this.url});
OgImage.fromJson(Map<String, dynamic> json) {
url = json['url'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['url'] = this.url;
return data;
}
}
這是我的控制器
import 'dart:convert';
import 'package:flutter/cupertino.dart';
import 'package:wrestling_news_app/Model/NewsModel.dart';
import 'package:http/http.dart' as http;
class NewsController with ChangeNotifier{
String urlnews = "https://wrestlingworld.co/wp-json/wp/v2/posts?categories=22";
List<NewsModel> _news = [];
Future<bool> getNews() async {
var url = Uri.parse(urlnews);
// var token = storage.getItem('token');
try {
http.Response response = await http.get(url);
print(response.body);
var data = json.decode(response.body) as List;
// print(data);
List<NewsModel> temp = [];
data.forEach((element) {
NewsModel product = NewsModel.fromJson(element);
temp.add(product);
});
_news = temp;
notifyListeners();
return true;
} catch (e) {
print(e);
return false;
}
}
List<NewsModel> get allNews {
return [..._news];
}
NewsModel getEventDetails(int id){
return _news.firstWhere((element) => element.id == id);
}
}
這是我嘗試輸出代碼的代碼：
Padding(
padding: const EdgeInsets.all(8.0),
child: ListView.builder(
physics: const ClampingScrollPhysics(),
shrinkWrap: true,
itemCount: allNews.length,
itemBuilder: (context, i) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: NewsCard(
title: allNews[i].title!.rendered!,
desciption: allNews[i].content!.rendered!,
),
);
}),)
以前我嘗試使用 FuturreBuilder 獲取。但是對于未來的建設者，我無法獲取詳細資訊。出于這個原因，我使用此方法從 api 獲取資料。你能回答我我的代碼有什么問題嗎？
這是我的 api 回應
[{"id":128640,"date":"2022-11-04T15:09:58","date_gmt":"2022-11-04T09:39:58","guid":{"rendered":"https:\/\/wrestlingworld.co\/?p=128640"},"modified":"2022-11-04T15:10:04","modified_gmt":"2022-11-04T09:40:04","slug":"impact-knockouts-tag-team-championship-match-announced-for-over-drive-2022","status":"publish","type":"post","link":"https:\/\/wrestlingworld.co\/news\/impact-knockouts-tag-team-championship-match-announced-for-over-drive-2022","title":{"rendered":"Impact Knockouts Tag Team Championship Match Announced for Over Drive"},"content":{"rendered":"\n<p>Impact Knockouts Tag Team Championships will be on the line at Over Drive on November 18th. It has <a href=\"https:\/\/impactwrestling.com\/2022\/11\/03\/tasha-steelz-savannah-evans-look-to-topple-the-death-dollz-in-knockouts-world-tag-team-title-showdown-at-over-drive\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">been announced<\/a> that Death Dollz (Taya Valkyrie and Jessicka) will be defending their titles against Tasha Steelz and Savannah
I/flutter (12372): type 'int' is not a subtype of type 'String?'
uj5u.com熱心網友回復：
更改 String? author為int? author. 我看到 api 回傳“作者”：6 型別是 int。
uj5u.com熱心網友回復：
最終作者：6；錯誤原因
這個問題你是從你給型別為 String 的 Api 獲取作者為 Int 嗎？在模型中如果您將型別更改為 Int 問題得到解決
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/527900.html
標籤：扑镖
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