颤振：从json列表中获取数据
我正在通过URL JSON做一个与气候相关的学习项目，我获取您的数据并在应用程序中显示它们 我试图从JSON获取数据。 当我尝试获取数据时，我收到一个错误： 类型“\u TypeError”不是“Widget”类型的子类型。 我想解决这个问题，我感谢任何最小的帮助，谢谢 我的JSON:颤振：从json列表中获取数据,json,flutter,parsing,dart,Json,Flutter,Parsing,Dart,我正在通过URL JSON做一个与气候相关的学习项目，我获取您的数据并在应用程序中显示它们 我试图从JSON获取数据。 当我尝试获取数据时，我收到一个错误： 类型“\u TypeError”不是“Widget”类型的子类型。 我想解决这个问题，我感谢任何最小的帮助，谢谢 我的JSON: { "metcheckData": { "forecastLocation": { "forecast": [
{
"metcheckData": {
"forecastLocation": {
"forecast": [
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4656",
"uvIndex": "0",
"totalcloud": "8",
"lowcloud": "8",
"medcloud": "0",
"highcloud": "0",
"humidity": "84",
"windspeed": "9",
"meansealevelpressure": "1018.02",
"windgustspeed": "11",
"winddirection": "28.7724",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "3",
"weekday": "Tuesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-19T23:00:00.00"
},
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4663",
"uvIndex": "0",
"totalcloud": "8",
"lowcloud": "8",
"medcloud": "0",
"highcloud": "0",
"humidity": "85",
"windspeed": "9",
"meansealevelpressure": "1018.26",
"windgustspeed": "11",
"winddirection": "29.4946",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T00:00:00.00"
},
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4666",
"uvIndex": "0",
"totalcloud": "8",
"lowcloud": "8",
"medcloud": "0",
"highcloud": "0",
"humidity": "86",
"windspeed": "9",
"meansealevelpressure": "1018.18",
"windgustspeed": "10",
"winddirection": "30.0925",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T01:00:00.00"
},
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4668",
"uvIndex": "0",
"totalcloud": "11",
"lowcloud": "11",
"medcloud": "0",
"highcloud": "0",
"humidity": "87",
"windspeed": "8",
"meansealevelpressure": "1017.79",
"windgustspeed": "10",
"winddirection": "30.761",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T02:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4671",
"uvIndex": "0",
"totalcloud": "12",
"lowcloud": "12",
"medcloud": "0",
"highcloud": "0",
"humidity": "87",
"windspeed": "8",
"meansealevelpressure": "1017.36",
"windgustspeed": "9",
"winddirection": "31.0844",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T03:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4673",
"uvIndex": "0",
"totalcloud": "11",
"lowcloud": "11",
"medcloud": "0",
"highcloud": "0",
"humidity": "88",
"windspeed": "8",
"meansealevelpressure": "1017.04",
"windgustspeed": "9",
"winddirection": "31.4161",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T04:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4671",
"uvIndex": "0",
"totalcloud": "11",
"lowcloud": "11",
"medcloud": "0",
"highcloud": "0",
"humidity": "89",
"windspeed": "7",
"meansealevelpressure": "1016.89",
"windgustspeed": "9",
"winddirection": "31.2326",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T05:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4668",
"uvIndex": "0",
"totalcloud": "10",
"lowcloud": "10",
"medcloud": "0",
"highcloud": "0",
"humidity": "91",
"windspeed": "8",
"meansealevelpressure": "1017.04",
"windgustspeed": "9",
"winddirection": "30.2947",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T06:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4664",
"uvIndex": "0",
"totalcloud": "9",
"lowcloud": "9",
"medcloud": "0",
"highcloud": "0",
"humidity": "92",
"windspeed": "8",
"meansealevelpressure": "1017.35",
"windgustspeed": "10",
"winddirection": "29.0404",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T07:00:00.00"
},
{
"temperature": "17",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4664",
"uvIndex": "0",
"totalcloud": "16",
"lowcloud": "16",
"medcloud": "0",
"highcloud": "0",
"humidity": "91",
"windspeed": "9",
"meansealevelpressure": "1017.77",
"windgustspeed": "10",
"winddirection": "27.9231",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T08:00:00.00"
},
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4673",
"uvIndex": "1",
"totalcloud": "32",
"lowcloud": "32",
"medcloud": "0",
"highcloud": "0",
"humidity": "86",
"windspeed": "9",
"meansealevelpressure": "1018.05",
"windgustspeed": "11",
"winddirection": "25.3295",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T09:00:00.00"
},
{
"temperature": "18",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4687",
"uvIndex": "2",
"totalcloud": "38",
"lowcloud": "38",
"medcloud": "0",
"highcloud": "0",
"humidity": "82",
"windspeed": "9",
"meansealevelpressure": "1018.31",
"windgustspeed": "10",
"winddirection": "22.0118",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T10:00:00.00"
},
{
"temperature": "19",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4702",
"uvIndex": "3",
"totalcloud": "36",
"lowcloud": "36",
"medcloud": "0",
"highcloud": "0",
"humidity": "76",
"windspeed": "9",
"meansealevelpressure": "1018.56",
"windgustspeed": "10",
"winddirection": "18.4385",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T11:00:00.00"
},
{
"temperature": "20",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4712",
"uvIndex": "4",
"totalcloud": "31",
"lowcloud": "31",
"medcloud": "0",
"highcloud": "0",
"humidity": "72",
"windspeed": "9",
"meansealevelpressure": "1018.79",
"windgustspeed": "9",
"winddirection": "14.9684",
"windletter": "NNE",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T12:00:00.00"
},
{
"temperature": "20",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4722",
"uvIndex": "5",
"totalcloud": "26",
"lowcloud": "26",
"medcloud": "0",
"highcloud": "0",
"humidity": "69",
"windspeed": "9",
"meansealevelpressure": "1018.9",
"windgustspeed": "8",
"winddirection": "12.5729",
"windletter": "W",
"icon": "FA",
"iconName": "Fair",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T13:00:00.00"
},
{
"temperature": "21",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4739",
"uvIndex": "10",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "68",
"windspeed": "9",
"meansealevelpressure": "1018.83",
"windgustspeed": "8",
"winddirection": "10.6461",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T14:00:00.00"
},
{
"temperature": "21",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4765",
"uvIndex": "10",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "67",
"windspeed": "9",
"meansealevelpressure": "1018.59",
"windgustspeed": "8",
"winddirection": "9.82178",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T15:00:00.00"
},
{
"temperature": "21",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4797",
"uvIndex": "10",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "67",
"windspeed": "9",
"meansealevelpressure": "1018.34",
"windgustspeed": "8",
"winddirection": "9.66212",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T16:00:00.00"
},
{
"temperature": "21",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4826",
"uvIndex": "9",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "68",
"windspeed": "9",
"meansealevelpressure": "1017.98",
"windgustspeed": "8",
"winddirection": "8.49407",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T17:00:00.00"
},
{
"temperature": "20",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4844",
"uvIndex": "9",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "70",
"windspeed": "9",
"meansealevelpressure": "1017.81",
"windgustspeed": "9",
"winddirection": "8.70691",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "D",
"utcTime": "2018-06-20T18:00:00.00"
},
{
"temperature": "20",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4857",
"uvIndex": "8",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "72",
"windspeed": "10",
"meansealevelpressure": "1017.93",
"windgustspeed": "10",
"winddirection": "10.5324",
"windletter": "N",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T19:00:00.00"
},
{
"temperature": "19",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4872",
"uvIndex": "2",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "74",
"windspeed": "10",
"meansealevelpressure": "1018.25",
"windgustspeed": "11",
"winddirection": "13.7294",
"windletter": "NNE",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T20:00:00.00"
},
{
"temperature": "19",
"dewpoint": "15",
"rain": "0",
"freezinglevel": "4889",
"uvIndex": "1",
"totalcloud": "1",
"lowcloud": "1",
"medcloud": "0",
"highcloud": "0",
"humidity": "78",
"windspeed": "11",
"meansealevelpressure": "1018.64",
"windgustspeed": "13",
"winddirection": "17.2073",
"windletter": "NNE",
"icon": "SU",
"iconName": "Sunny",
"chanceofrain": "0",
"chanceofsnow": "0",
"dayOfWeek": "4",
"weekday": "Wednesday",
"sunrise": "6:57",
"sunset": "19:04",
"dayOrNight": "N",
"utcTime": "2018-06-20T21:00:00.00"
},
],
"continent": "",
"country": "",
"location": "28.0/-15.6",
"latitude": 28.0,
"longitude": -15.6,
"timezone": 1
}
},
"feedCreation": "2018-06-19T23:05:19.00",
"feedCreator": "Metcheck.com",
"feedModel": "GHX2",
"feedModelRun": "12Z",
"feedModelRunInitialTime": "2018-06-19T12:00:00.00",
"feedResolution": "0.01"
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: new AppBar(
title: new Text("G.C. - WEATHER"),
centerTitle: true,
backgroundColor: Colors.blue[700],
),
body: new Container(
child: new RefreshIndicator(
onRefresh: _autoRefresh,
child: new ListView(
children: <Widget>[
new FutureBuilder<List<Post>>(
future: fetchPosts(),
builder: (context, snapshot) {
if (snapshot.hasData){
List<Post> posts = snapshot.data;
return new Column(
children: posts.map((post) => new Column(
children: <Widget>[
new Text(post.temperature),
],
)).toList()
);
}
else if(snapshot.hasError)
{
return snapshot.error;
}
return new Center(
child: new Column(
children: <Widget>[
new Padding(padding: new EdgeInsets.all(50.0)),
new CircularProgressIndicator(),
],
),
);
},
),
],
),
),
),
);
}
}
@覆盖
小部件构建（构建上下文）{
返回脚手架(
appBar：新的appBar(
标题：新文本（“G.C.-天气”），
标题：对，
背景颜色：颜色。蓝色[700]，
),
主体：新容器(
子项：新的刷新指示器(
onRefresh:\u自动刷新，
子：新列表视图(
儿童：[
新未来建设者(
future:fetchPosts（），
生成器：（上下文，快照）{
if（snapshot.hasData）{
List posts=snapshot.data；
返回新列(
子项：posts.map（（post）=>新列(
儿童：[
新文本（后温度），
],
))托利斯先生（）
);
}
else if（snapshot.hasrerror）
{
返回snapshot.error；
}
返回新中心(
子：新列(
儿童：[
新填充（填充：新边集。全部（50.0）），
新的CircularProgressIndicator（），
],
),
);
},
),
],
),
),
),
);
}
}
Future<List<Post>> fetchPosts() async {
http.Response response = await http.get('http://ws1.metcheck.com/ENGINE/v9_0/json.asp?lat=28&lon=-15.6&lid=62228&Fc=No');
List responseJson = json.decode(response.body);
return responseJson.map((m) => new Post.fromJson(m)).toList();
}
class Post {
final String temperature, rain, humidity, sunrise, sunset, updateDate;
Post({
this.temperature,
this.rain,
this.humidity,
this.sunrise,
this.sunset,
this.updateDate,
});
factory Post.fromJson(Map<String, dynamic> json) {
return new Post(
temperature: json['metcheckData']['forecastLocation']['forecast']['temperature'].toString(),
rain: json['metcheckData']['forecastLocation']['forecast']['rain'].toString(),
humidity:json['metcheckData']['forecastLocation']['forecast']['humidity'].toString(),
sunrise: json['metcheckData']['forecastLocation']['forecast']['sunrise'].toString(),
sunset: json['metcheckData']['forecastLocation']['forecast']['sunset'].toString(),
updateDate: json['metcheckData']['forecastLocation']['forecast']['utcTime'].toString(),
);
}
}
Future fetchPosts（）异步{
http.Response-Response=等待http.get（'http://ws1.metcheck.com/ENGINE/v9_0/json.asp?lat=28&lon=-15.6&lid=62228&Fc=No'）；
List responseJson=json.decode（response.body）；
return responseJson.map（（m）=>new Post.fromJson（m））.toList（）；
}
班岗{
最终串温、雨、湿度、日出、日落、更新；
职位({
这个温度，
今天下雨了，
这个，湿度，
这是日出，
这是日落，
这个。更新日期，
});
factory Post.fromJson（映射json）{
换岗(
温度：json['metcheckData']['forecastLocation']['forecast']['temperature'].toString（），
rain:json['metcheckData']['forecastLocation']['forecast']['rain'].toString（），
湿度：json['metcheckData']['forecastLocation']['forecast']['湿度'].toString（），
日出：json['metcheckData']['forecastLocation']['forecast']['sunrise'].toString（），
日落：json['metcheckData']['forecastLocation']['forecast']['sunset'].toString（），
updateDate:json['metcheckData']['forecastLocation']['forecast']['utcTime'].toString（），
);
}
}
在查看json和代码之后，我发现json的根不是JsonArray，而是JsonObject。您试图获取的列表位于
['metcheckData']['forecastLocation']['forecast']Future<List<Post>> fetchPosts() async {
http.Response response = await http.get(
'http://ws1.metcheck.com/ENGINE/v9_0/json.asp?lat=28&lon=-15.6&lid=62228&Fc=No');
var responseJson = json.decode(response.body);
return (responseJson['metcheckData']['forecastLocation']['forecast'] as List)
.map((p) => Post.fromJson(p))
.toList();
}
class Post {
final String temperature, rain, humidity, sunrise, sunset, updateDate;
Post({
this.temperature,
this.rain,
this.humidity,
this.sunrise,
this.sunset,
this.updateDate,
});
factory Post.fromJson(Map<String, dynamic> json) {
return new Post(
temperature: json['temperature'].toString(),
rain: json['rain'].toString(),
humidity: json['humidity'].toString(),
sunrise: json['sunrise'].toString(),
sunset: json['sunset'].toString(),
updateDate: json['utcTime'].toString(),
);
}
}
Future fetchPosts（）异步{
http.Response-Response=等待http.get(
'http://ws1.metcheck.com/ENGINE/v9_0/json.asp?lat=28&lon=-15.6&lid=62228&Fc=No'）；
var responseJson=json.decode（response.body）；
返回（responseJson['metcheckData']['forecastLocation']['forecast']作为列表）
.map（（p）=>Post.fromJson（p））
.toList（）；
}
班岗{
最终串温、雨、湿度、日出、日落、更新；
职位({
这个温度，
今天下雨了，
这个，湿度，
这是日出，
这是日落，
这个。更新日期，
});
factory Post.fromJson（映射json）{
换岗(
温度：json['temperature'].toString（），
rain:json['rain'].toString（），
湿度：json['湿度].toString（），
sunrise:json['sunrise'].toString（），
日落：json['sunset'].toString（），
updateDate:json['utcTime'].toString（），
);
}
}
fetchPhotos（）compute（）parsePhotos（）Future<List<Photo>> fetchPhotos(http.Client client) async {
final response = await client
.get(Uri.parse('https://jsonplaceholder.typicode.com/photos'));
// Use the compute function to run parsePhotos in a separate isolate.
return compute(parsePhotos, response.body);
}
// A function that converts a response body into a List<Photo>.
List<Photo> parsePhotos(String responseBody) {
final parsed = jsonDecode(responseBody).cast<Map<String, dynamic>>();
return parsed.map<Photo>((json) => Photo.fromJson(json)).toList();
}
Future fetchPhotos（http.Client）异步{
最终响应=等待客户
.get（Uri.parse（'https://jsonplaceholder.typicode.com/photos'));
//使用compute函数在单独的隔离中运行parsePhotos。
返回compute（parsePhotos，response.body）；
}
//将响应主体转换为列表的函数。
列表照片（字符串响应库）{
final parsed=jsonDecode（responseBody.cast（）；
返回parsed.map（（json）=>Photo.fromJson（json））.toList（）；
}
class Photo {
final int albumId;
final int id;
final String title;
final String url;
final String thumbnailUrl;
Photo({this.albumId, this.id, this.title, this.url, this.thumbnailUrl});
factory Photo.fromJson(Map<String, dynamic> json) {
return Photo(
albumId: json['albumId'] as int,
id: json['id'] as int,
title: json['title'] as String,
url: json['url'] as String,
thumbnailUrl: json['thumbnailUrl'] as String,
);
}
班级照片{
最终的int-albumId；
最终int id；
最后的字符串标题；
最终字符串url；
最终字符串缩略图URL；
照片（{this.albumId，this.id，this.title，this.url，this.thumbnailUrl}）；
factory Photo.fromJson（映射json）{
返回照片(
albumId:json['albumId']作为int，
id:json['id']作为int，
title:json['title']作为字符串，
url:json['url']作为字符串，
thumbnailUrl:json['thumbnailUrl']作为字符串，
);
}