Flutter插件(Plugin)开发 - Android视角，Android进阶之光

import io.flutter.embedding.engine.plugins.FlutterPlugin
import io.flutter.plugin.common.MethodCall
import io.flutter.plugin.common.MethodChannel
 
class FlutterPluginExample: FlutterPlugin, MethodChannel.MethodCallHandler {
    private lateinit var channel : MethodChannel
 
    override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
        channel = MethodChannel(flutterPluginBinding.binaryMessenger, "flutter_plugin_example")
        channel.setMethodCallHandler(this)
    }
 
    override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
        when (call.method) {
            "getPlatformVersion" -> result.success("Android ${android.os.Build.VERSION.RELEASE}")
            else -> result.notImplemented()
        }
    }
 
    override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
        channel.setMethodCallHandler(null)
    }
}

这段代码展示了如何创建一个简单的Flutter插件，它提供了一个方法getPlatformVersion来获取Android设备的系统版本号。这是一个基本的插件开发示例，展示了如何处理方法调用并返回结果。在实际开发中，插件可以提供更多复杂的功能。