Flutter天气信息获取插件weather_kit的使用
Flutter天气信息获取插件 weather_kit
的使用
前提条件
Apple Developer Program
您必须是Apple Developer Program的成员才能使用这个包。
Bundle ID
您可以在Xcode或Certificates, Identifiers & Profiles中注册并检查Bundle ID。
Team ID
您可以在Membership页面查看Team ID。
Weather Kit的keyID和p8证书
为了使用Weather Kit,请按照以下步骤操作:
- 访问 Certificates, Identifiers & Profiles / Keys
- 在表单中输入任何Key Name,并选中Weather Kit复选框。
- 点击"register",您可以查看Key ID。
- 点击"Download"下载p8证书。
示例代码
生成JWT
final weatherKit = WeatherKit();
final token = weatherKit.generateJWT(
bundleId: 'com.example',
teamId: 'team id',
keyId: 'key id',
pem: 'example.p8', // 替换为您的p8文件内容
expiresIn: const Duration(hours: 1),
);
获取当前天气数据
final result = await weatherKit.obtainWeatherData(
jwt: token,
language: 'ja',
latitude: '35.71',
longitude: '139.811',
dataSets: 'currentWeather',
);
完整示例Demo
以下是完整的Flutter应用示例,演示如何使用weather_kit
插件来获取天气信息:
import 'package:flutter/material.dart';
import 'package:weather_kit/weather_kit.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Weather Kit DEMO',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key});
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String? weatherInfo;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Weather Kit Demo'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
ElevatedButton(
onPressed: () async {
const pem = """-----BEGIN PRIVATE KEY-----
MIIEvQIBADANBgkqhkiG9w0BAQEFAASCAmMwggJfAgEAAoGBAL...
-----END PRIVATE KEY-----"""; // 替换为您的p8文件内容
final weatherKit = WeatherKit();
final jwt = weatherKit.generateJWT(
bundleId: 'com.example.weatherapp', // 替换为您的Bundle ID
teamId: 'YOUR_TEAM_ID', // 替换为您的Team ID
keyId: 'YOUR_KEY_ID', // 替换为您的Key ID
pem: pem,
expiresIn: const Duration(hours: 1),
);
try {
final currentWeather = await weatherKit.obtainWeatherData(
jwt: jwt,
language: 'en',
latitude: '35.71',
longitude: '139.811',
dataSets: 'currentWeather',
);
setState(() {
weatherInfo = currentWeather.toString();
});
} catch (e) {
setState(() {
weatherInfo = 'Error fetching weather data: $e';
});
}
},
child: const Text('Fetch Current Weather'),
),
if (weatherInfo != null) ...[
const SizedBox(height: 20),
Text(
weatherInfo!,
style: const TextStyle(fontSize: 16),
textAlign: TextAlign.center,
),
],
],
),
),
);
}
}
定价
前500,000次调用是免费的。更多详情请参阅这里。
参考资料
更多关于Flutter天气信息获取插件weather_kit的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter天气信息获取插件weather_kit的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,以下是一个关于如何使用 weather_kit
插件来获取天气信息的 Flutter 代码示例。这个示例将展示如何初始化插件、获取当前位置的天气数据以及展示这些数据。
首先,确保你已经在 pubspec.yaml
文件中添加了 weather_kit
依赖:
dependencies:
flutter:
sdk: flutter
weather_kit: ^最新版本号 # 请替换为实际的最新版本号
然后运行 flutter pub get
来获取依赖。
接下来是代码示例:
import 'package:flutter/material.dart';
import 'package:weather_kit/weather_kit.dart';
import 'package:geolocator/geolocator.dart';
import 'package:geolocator_platform_interface/geolocator_platform_interface.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Weather App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: WeatherScreen(),
);
}
}
class WeatherScreen extends StatefulWidget {
@override
_WeatherScreenState createState() => _WeatherScreenState();
}
class _WeatherScreenState extends State<WeatherScreen> {
late WeatherKitClient _weatherKitClient;
late Position? _currentPosition;
late WeatherResponse? _weatherResponse;
@override
void initState() {
super.initState();
_weatherKitClient = WeatherKitClient(apiKey: 'YOUR_API_KEY'); // 替换为你的WeatherKit API Key
_getCurrentLocation();
}
Future<void> _getCurrentLocation() async {
bool serviceEnabled;
LocationPermission permission;
// 检查位置服务是否启用
serviceEnabled = await Geolocator.isLocationServiceEnabled();
if (!serviceEnabled) {
return Future.error('Location services are disabled.');
}
permission = await Geolocator.checkPermission();
if (permission == LocationPermission.denied) {
permission = await Geolocator.requestPermission();
if (permission == LocationPermission.denied) {
return Future.error('Location permissions are denied');
}
}
if (permission == LocationPermission.deniedForever) {
return Future.error(
'Location permissions are permanently denied, we cannot request permissions.');
}
_currentPosition = await Geolocator.getCurrentPosition(
desiredAccuracy: LocationAccuracy.high);
if (_currentPosition != null) {
_getWeatherData(_currentPosition!.latitude, _currentPosition!.longitude);
}
}
Future<void> _getWeatherData(double latitude, double longitude) async {
try {
_weatherResponse = await _weatherKitClient.getCurrentWeather(
latitude: latitude,
longitude: longitude
);
setState(() {});
} catch (e) {
print('Error fetching weather data: $e');
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Weather App'),
),
body: Center(
child: _weatherResponse == null
? CircularProgressIndicator()
: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Current Weather in ${_weatherResponse!.location!.name}',
style: TextStyle(fontSize: 24),
),
Text(
'Temperature: ${_weatherResponse!.current!.temperature}°',
style: TextStyle(fontSize: 20),
),
Text(
'Description: ${_weatherResponse!.current!.description}',
style: TextStyle(fontSize: 18),
),
],
),
),
);
}
}
注意事项:
- API Key:你需要从 WeatherKit 获取一个 API Key,并在代码中替换
'YOUR_API_KEY'
。 - 权限:确保你的应用有获取位置信息的权限。这个示例中使用了
geolocator
插件来处理位置权限和获取位置信息。 - 错误处理:在生产环境中,你应该添加更多的错误处理逻辑,以处理各种可能的异常情况,如网络错误、API 错误等。
希望这个示例能帮助你理解如何使用 weather_kit
插件来获取和展示天气信息。