[移动开发]uniapp 广播 pda 扫描设备

?先创建一个组件 代码复制可用（需要替换广播动作和广播标签）

<template>
	<view>
		<view class="content"></view>
	</view>
</template>

<script>
	var main, receiver, filter;
	var codeQueryTag = false;
	export default {
		data() {
			return {
				scanCode: ''
			}
		},
		created() {
			this.initScan()
			this.startScan();
		},
		onHide() {
			this.stopScan();
		},
		destroyed() {
			this.stopScan();
		},
		methods: {
			initScan() {
				//  #ifdef APP
				console.log('initScan');
				let that = this;
				main = plus.android.runtimeMainActivity(); //获取activity
				//var context = plus.android.importClass('android.content.Context'); //上下文
				var IntentFilter = plus.android.importClass('android.content.IntentFilter');
				filter = new IntentFilter();
				//下面的addAction内改为自己的广播动作
				filter.addAction("com.seuic.idcard");					
				receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {
					onReceive: (context, intent)=> {
						console.log('onReceive');
						plus.android.importClass(intent);
						//下面的getStringExtra内改为自己的广播标签--有误
						let code = intent.getStringExtra("data");
						that.queryCode(code);							
					}
				});
				// #endif
			},
			startScan() {
				//  #ifdef APP
				console.log('startScan');
				main.registerReceiver(receiver, filter);
				// #endif
			},
			stopScan() {
				//  #ifdef APP
				console.log('stopScan');
				main.unregisterReceiver(receiver);
				// #endif
			},
			queryCode: function(code) {
				//  #ifdef APP
				console.log('queryCode');
				if (codeQueryTag) return false;
				codeQueryTag = true;
				setTimeout(function() {
					codeQueryTag = false;
				}, 150); 
				var id = code
				uni.$emit('xwscan', {
					code: id
				})
				// #endif
			}
		}
	}
</script>

<style>

</style>

在页面中使用 可根据自己实际场景向第三方app传值

<template>
	<view class="content">
		扫描结果：{{input}}
		<button type="default" @click="scanCode()">扫描</button>
		<xw-scan></xw-scan>
	</view>
</template>

<script>
	import xwScan from '../../components/xw-scan.vue'
	export default {
		components: {
			xwScan
		},
		data() {
			return {
				input: ''
			}
		},
		onLoad() {

		},
		onUnload() {
			// 移除监听事件      
			uni.$off('xwscan')
		},
		onShow() {
			let that = this
			uni.$off('xwscan') // 每次进来先 移除全局自定义事件监听器
			uni.$on('xwscan', (res) => {
				console.log('扫码结果：', res.code);
				this.input = res.code
			})
		},
		methods: {
			scanCode() {
				if (plus.runtime.isApplicationExist({
						pname: 'com.seuic.idcard'
					})) {

					console.log("该app已安装")

					//调用第三方app
					plus.runtime.launchApplication({
							pname: "com.seuic.idcard",
							action: "com.seuic.idcard",
							extra: {
								"hideWindow": true,
							} //传递的参数
						},
						function(e) {
							console.log("e", e)
							uni.showToast({
								title: "打开失败",
								icon: "none"
							})
						},
					);
				} else {
					uni.showToast({
						title: "app未安装",
						icon: "none"
					})
				}
			},
		}
	}
</script>

<style>
	
</style>