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网站运营商查询,宁波seo网页怎么优化,甘肃省住房与建设厅网站,做外汇看哪些网站本文以同层渲染为例，介绍如何集成高德地图完整代码见 Flutter 鸿蒙版 Demo 概述 Dart 侧核心代码如下，通过 OhosView 来承载原生视图 OhosView(viewType: com.shaohushuo.app/customView,onPlatformViewCreated: _onPlatformViewCreated,creation…

本文以同层渲染为例，介绍如何集成高德地图

完整代码见 Flutter 鸿蒙版 Demo

概述

Dart 侧

核心代码如下，通过 OhosView 来承载原生视图

OhosView(viewType: 'com.shaohushuo.app/customView',onPlatformViewCreated: _onPlatformViewCreated,creationParams: const <String, dynamic>{'initParams': 'hello world'},creationParamsCodec: const StandardMessageCodec(),)

其中 viewType 为自定义的 ohosView 的名称，onPlatformViewCreated 为创建完成回调，creationParams 为创建时传入的参数，creationParamsCodec 为参数编码格式。

ArkTS 侧

这里面我们按照《如何使用PlatformView》中的示例操作，首先需要创建一个显示高德地图的视图，其核心代码如下：

完整文件 AmapWidgetFactory.ets


MapsInitializer.setApiKey("e4147e927a1f63a0acff45cecf9419b5");
MapViewManager.getInstance().registerMapViewCreatedCallback((mapview?: MapView, mapViewName?: string) => {if (!mapview) {return;}let mapView = mapview;mapView.onCreate();mapView.getMapAsync((map) => {let aMap: AMap = map;})
})@Component
struct ButtonComponent {@Prop params: ParamscustomView: AmapWidgetView = this.params.platformView as AmapWidgetViewbuild() {Row() {MapViewComponent().width('100%').height('100%')}}
}

接下来创建一个 AmapWidgetFactory.ets

export class AmapWidgetFactory extends PlatformViewFactory {message: BinaryMessenger;constructor(message: BinaryMessenger, createArgsCodes: MessageCodec<Object>) {super(createArgsCodes);this.message = message;}public create(context: common.Context, viewId: number, args: Object): PlatformView {return new AmapWidgetView(context, viewId, args, this.message);}
}

最终需要创建一个 AmapWidgetPlugin.ets

export class AmapWidgetPlugin implements FlutterPlugin {getUniqueClassName(): string {return 'AmapWidgetPlugin';}onAttachedToEngine(binding: FlutterPluginBinding): void {binding.getPlatformViewRegistry()?.registerViewFactory('com.shaohushuo.app/customView', new AmapWidgetFactory(binding.getBinaryMessenger(), StandardMessageCodec.INSTANCE));}onDetachedFromEngine(binding: FlutterPluginBinding): void {}
}