[英]Flutter json array parsing
我知道这是一个常见问题,但我没有找到任何解决方案,所以我在这里提出一个问题。
JSON格式如下,
[
{
"id": "127",
"image": "https://www.website.com/imgFldr/app/app-bangalore3.jpg",
"city": "Bangalore",
"store_mobile": "+91-978XXXXXXX",
"search_by": "Search one",
"url": "image url",
"store_address": "Address 1"
},
{
"id": "128",
"image": "https://www.website.com/imgFldr/app/app-bangalore2.jpg",
"city": "Bangalore",
"store_mobile": "+91-978XXXXXXX",
"search_by": "Search 2",
"url": "image url",
"store_address": "Address 2"
},
{
"id": "137",
"image": "https://www.website.com/imgFldr/app/app-bangalore.jpg",
"city": "Bangalore",
"store_mobile": "+91-978XXXXXXX",
"search_by": "Search 3",
"url": "image url",
"store_address": "Address 3"
},
{
"id": "132",
"image": "https://www.website.com/imgFldr/app/app-mumbai-2.jpg",
"city": "Mumbai",
"store_mobile": "+91-978XXXXXXX",
"search_by": "Search 4",
"url": "image url",
"store_address": "Address 4"
},
{
"id": "139",
"image": "https://www.website.com/imgFldr/app/app-mumbai.jpg",
"city": "Mumbai",
"store_mobile": "+91-978XXXXXXX",
"search_by": "Search 5",
"url": "image url",
"store_address": "Address 5"
}
]
响应以数组的形式出现。 我喜欢这个,模型类
class Stores {
String id;
String image;
String city;
String storeMobile;
String searchBy;
String url;
String storeAddress;
Stores(
{this.id,
this.image,
this.city,
this.storeMobile,
this.searchBy,
this.url,
this.storeAddress});
Stores.fromJson(Map<String, dynamic> json) {
id = json['id'];
image = json['image'];
city = json['city'];
storeMobile = json['store_mobile'];
searchBy = json['search_by'];
url = json['url'];
storeAddress = json['store_address'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['image'] = this.image;
data['city'] = this.city;
data['store_mobile'] = this.storeMobile;
data['search_by'] = this.searchBy;
data['url'] = this.url;
data['store_address'] = this.storeAddress;
return data;
}
}
在 main.dart 类里面
List<Stores> storeList = new List();
Future<Null> getStoresData() async {
setState(() {
loading = true;
});
final response = await http.get(Uri.encodeFull(APIs.url_getStoreData));
List<dynamic> list = jsonDecode(utf8.decode(response.bodyBytes));
Stores str = Stores.fromJson(list[0]);
storeList.add(str);
print("list Value : $list");
print("Store : $storeList");
setState(() {
loading = false;
});
}
JSON 以单个字符串形式出现。 我无法在 ListTiles 上使用它,因为
storeList[index]['city'],
当我尝试 print('Size : $storeList.length'); 它只打印 =1
请帮助和谢谢。
使用列表构建器
_StoreListAPI() async {
final response = await http.get(
APINAME,
);
if (response.statusCode == 200) {
final result = json.decode(response.body);
List<dynamic> list = result;
print("response----$result");
List<Stores> storelist= list.map((i) => Stores.fromJson(i)).toList();
print("response--22--"+list_[0].toJson().toString());
setState(() => {
_storelist = storelist,
isLoading = false
});
} else {
setState(() => {
isLoading = false
});
} }
小工具
body:FutureBuilder<List<Stores>>(
future: _storelist
builder: (BuildContext context, AsyncSnapshot<List<Stores>> snapshot) {
if (snapshot.data !=null) {
return ListView.builder(
physics: BouncingScrollPhysics(),
itemCount: snapshot.data.length,
itemBuilder: (BuildContext context, int index) {
return ListTile()
})}});
长度即将到来,因为您只向列表中添加了一个项目。
您如何将整个列表转换为您的模型
List<Stores> storeList = new List();
Future<Null> getStoresData() async {
setState(() {
loading = true;
});
final response = await http.get(Uri.encodeFull(APIs.url_getStoreData));
List<dynamic> list = jsonDecode(utf8.decode(response.bodyBytes));
for(int i = 0 ; i<list.length;i++)
storeList.add(Stores.fromJson(list[i]));
print("list Value : $list");
print("Store : $storeList");
setState(() {
loading = false;
});
}
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