EveryLike/uni_modules/native-button/utssdk/app-android/index.uts

import { Button } from "android.widget"
import { INativeButtonContext, CreateNativeButtonContext } from "../interface.uts"

export class NativeButton {
	$element: UniNativeViewElement;

	constructor(element : UniNativeViewElement) {
		//接收传递过来的UniNativeViewElement
		this.$element = element;
		this.bindView();
	}

	button : Button | null = null;
	bindView() {
		//通过UniElement.getAndroidActivity()获取android平台activity 用于创建view的上下文
		this.button = new Button(this.$element.getAndroidActivity()!);  //构建原生view
		//限制原生Button 文案描述不自动大写
		this.button?.setAllCaps(false)
		//监听原生Button点击事件
		this.button?.setOnClickListener(_ => {
			const detail = {}
			//构建自定义UniNativeViewEvent返回对象
			const event = new UniNativeViewEvent("customClick", detail)
			//触发原生Button的点击事件
			this.$element.dispatchEvent(event)
		})
		//UniNativeViewEvent 绑定 安卓原生view
		this.$element.bindAndroidView(this.button!);
	}

	updateText(text : string) {
		//更新原生Button 文案描述
		this.button?.setText(text)
	}

	destroy() {
		//数据回收
	}
}


class NativeButtonContext implements INativeButtonContext {

	private button : Button | null = null
	constructor(button : Button) {
		this.button = button
	}
	updateText(text : string) {
		this.button?.setText(text)
	}
}
/**
 * 递归查询
 */
function iterateElement(homeElement : UniElement) : UniElement | null {
	if ("NATIVE-VIEW" == homeElement.nodeName) {
		return homeElement
	}
	for (perChildEle of homeElement.children) {
		let findEle = iterateElement(perChildEle)
		if (findEle != null) {
			return findEle
		}
	}

	return null
}



export function createNativeButtonContext(id : string, ins : ComponentPublicInstance | null = null) : INativeButtonContext | null {
	if (ins == null) {
		const pages = getCurrentPages()
		if (pages.length > 0) {
			const page = pages[pages.length - 1]
			const rootViewElement = page.getElementById(id)
			if (rootViewElement != null) {
				/**
				 * 找到了root节点，递归检索目标 native-view
				 */
				const nativeViewElement = iterateElement(rootViewElement)
				if (nativeViewElement != null) {
					return new NativeButtonContext(nativeViewElement.getAndroidView()! as Button)
				}
			}
		}
	} else {
		/**
		 * 尝试迭代遍历
		 */
		if (ins.$el != null) {
			const nativeViewElement = iterateElement(ins.$el as UniElement)
			if (nativeViewElement != null) {
				return new NativeButtonContext(nativeViewElement.getAndroidView()! as Button)
			}
		}
	}

	return null
}