我正在嘗試使用 GetX 查看來自 API 的資料，但有問題我試圖修復它，但我不能請問有什么問題
這是我的控制器：
class ProductController extends GetxController {
var productsList = <Product>[].obs;
var isLoading = true.obs;
@override
void onInit() {
fetchProducts();
super.onInit();
}
void fetchProducts() async {
try {
var product = await RemoteServices.fetchData();
if (product != null) {
productsList.value = product;
isLoading.value = false;
}
} catch (e) {
print(e);
}
}
}
這是遠程服務：
class RemoteServices {
static var client = http.Client();
static Future<List<Product>> fetchData() async {
final uri = Uri.parse(
"https://makeup-api.herokuapp.com/api/v1/products.json?product_type=blush");
final response = await client.get(uri);
if (response.statusCode == 200) {
var jsonData = json.decode(response.body);
final productsListJson =
(jsonData[''] as List).map((e) => Product.fromJson(e)).toList();
//jsonData['data']^^^
print("its WORK SUCCESSFULLY");
return productsListJson;
} else {
throw Exception('Something Wrong :(');
}
}
}
這是查看頁面：
class HomePage extends StatelessWidget {
final productController = Get.put(ProductController());
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.purple,
body: Obx(() => productController.isLoading.value
? Center(
child: CircularProgressIndicator(),
)
: ListView.builder(
itemCount: productController.productsList.length,
itemBuilder: (BuildContext context, int index) {
return Card(
child: Column(
children: [
Image.network(productController
.productsList[index].imageLink
.toString()),
Text(productController.productsList[index].name
.toString()),
Text(productController.productsList[index].price
.toString()),
],
),
);
},
)),
);
}
}
當我運行應用程式時，CircularProgressIndicator() 仍在運行，運行頁面告訴我：
將檔案同步到為 x86 構建的設備 Android SDK...
在 4,096 毫秒內重新啟動應用程式。
[GETX] 實體“ProductController”已創建
[GETX] 實體“ProductController”已初始化
I/flutter (28829)：“String”型別不是“index”型別“int”的子型別
uj5u.com熱心網友回復：
我檢查了您的代碼并解決了問題。這里的代碼...
遠程服務
class RemoteServices {
static var client = http.Client();
static Future<List<Product>> fetchData() async {
final uri = Uri.parse("https://makeup-api.herokuapp.com/api/v1/products.json?product_type=blush");
final response = await client.get(uri);
if (response.statusCode == 200) {
var jsonData = json.decode(response.body);
final productsListJson = List<Product>.from(jsonData.map((x) => Product.fromJson(x)));
print("its WORK SUCCESSFULLY");
return productsListJson;
} else {
throw Exception('Something Wrong :(');
}
}
}
產品型號類
List<Product> productFromJson(String str) => List<Product>.from(json.decode(str).map((x) => Product.fromJson(x)));
String productToJson(List<Product> data) => json.encode(List<dynamic>.from(data.map((x) => x.toJson())));
class Product {
Product({
this.id,
this.brand,
this.name,
this.price,
this.priceSign,
this.currency,
this.imageLink,
this.productLink,
this.websiteLink,
this.description,
this.rating,
this.category,
this.productType,
this.tagList,
this.createdAt,
this.updatedAt,
this.productApiUrl,
this.apiFeaturedImage,
this.productColors,
});
int? id;
String? brand;
String? name;
String? price;
String? priceSign;
String? currency;
String? imageLink;
String? productLink;
String? websiteLink;
String? description;
double? rating;
String? category;
String? productType;
List<String>? tagList;
DateTime? createdAt;
DateTime? updatedAt;
String? productApiUrl;
String? apiFeaturedImage;
List<ProductColor>? productColors;
factory Product.fromJson(Map<String, dynamic> json) => Product(
id: json["id"],
brand: json["brand"] == null ? null : json["brand"],
name: json["name"],
price: json["price"] == null ? null : json["price"],
priceSign: json["price_sign"] == null ? null : json["price_sign"],
currency: json["currency"] == null ? null : json["currency"],
imageLink: json["image_link"],
productLink: json["product_link"],
websiteLink: json["website_link"],
description: json["description"] == null ? null : json["description"],
rating: json["rating"] == null ? null : json["rating"].toDouble(),
category: json["category"] == null ? null : json["category"],
productType: json["product_type"],
tagList: List<String>.from(json["tag_list"].map((x) => x)),
createdAt: DateTime.parse(json["created_at"]),
updatedAt: DateTime.parse(json["updated_at"]),
productApiUrl: json["product_api_url"],
apiFeaturedImage: json["api_featured_image"],
productColors: List<ProductColor>.from(json["product_colors"].map((x) => ProductColor.fromJson(x))),
);
Map<String, dynamic> toJson() => {
"id": id,
"brand": brand == null ? null : brand,
"name": name,
"price": price == null ? null : price,
"price_sign": priceSign == null ? null : priceSign,
"currency": currency == null ? null : currency,
"image_link": imageLink,
"product_link": productLink,
"website_link": websiteLink,
"description": description == null ? null : description,
"rating": rating == null ? null : rating,
"category": category == null ? null : category,
"product_type": productType,
"tag_list": List<dynamic>.from(tagList!.map((x) => x)),
"created_at": createdAt?.toIso8601String(),
"updated_at": updatedAt?.toIso8601String(),
"product_api_url": productApiUrl,
"api_featured_image": apiFeaturedImage,
"product_colors": List<dynamic>.from(productColors!.map((x) => x.toJson())),
};
}
class ProductColor {
ProductColor({
this.hexValue,
this.colourName,
});
String? hexValue;
String? colourName;
factory ProductColor.fromJson(Map<String, dynamic> json) => ProductColor(
hexValue: json["hex_value"],
colourName: json["colour_name"] == null ? null : json["colour_name"],
);
Map<String, dynamic> toJson() => {
"hex_value": hexValue,
"colour_name": colourName == null ? null : colourName,
};
}
uj5u.com熱心網友回復：
final productsListJson =
(jsonData as List).map((e) => Product.fromJson(e)).toList();
轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/519579.html