Flutter 项目添加 IOS 小组件开发记录
在Flutter项目中添加iOS小组件,你需要使用Flutter的平台特定代码来集成小组件。以下是一个简化的步骤和示例代码:
- 在iOS项目中创建小组件。
- 在Flutter项目中,使用
flutter create --template=plugin --org com.example my_flutter_plugin
命令创建一个新的插件项目。 - 实现
FlutterPlugin
接口以及小组件的逻辑。 - 打包插件并在pubspec.yaml中添加依赖。
- 在Flutter项目中使用小组件。
示例代码:
// my_flutter_plugin/lib/my_flutter_plugin.dart
import 'package:flutter/services.dart';
class MyFlutterPlugin {
static const MethodChannel _channel =
const MethodChannel('my_flutter_plugin');
static Future<String?> get platformVersion async {
final String? version = await _channel.invokeMethod('getPlatformVersion');
return version;
}
}
// 在你的Flutter小部件中使用
import 'package:my_flutter_plugin/my_flutter_plugin.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Plugin example app'),
),
body: Center(
child: Text(
'Version: ${MyFlutterPlugin.platformVersion}',
),
),
),
);
}
}
在iOS部分,你需要实现小组件的协议并处理小组件的生命周期及用户交互。
// MyFlutterPlugin.swift
import Flutter
import UIKit
public class MyFlutterPlugin: NSObject, FlutterPlugin {
static var channel: FlutterMethodChannel?
public static func register(with registrar: FlutterPluginRegistrar) {
let channel = FlutterMethodChannel(name: "my_flutter_plugin", binaryMessenger: registrar.messenger())
let instance = MyFlutterPlugin()
registrar.addMethodCallDelegate(instance, channel: channel)
self.channel = channel
}
public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
if call.method == "getPlatformVersion" {
result("iOS " + UIDevice.current.systemVersion)
} else {
result(FlutterMethodNotImplemented)
}
}
}
在iOS的AppDelegate.swift
中注册插件:
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