appWareHouse/components/scan.vue

<template>
    <view class="content"></view>
</template>
 
<script>
// #ifdef APP-PLUS
var main, receiver, filter;
var _codeQueryTag = false;
export default {
    data() {
        return {
            scanCode: ''
        };
    },
    created: function(option) {
        this.initScan();
        this.startScan();
    },
    onHide: function() {
        this.stopScan();
    },
    destroyed: function() {
        /*页面退出时一定要卸载监听,否则下次进来时会重复，造成扫一次出2个以上的结果*/
        this.stopScan();
    },
    methods: {
        initScan() {
            let _this = this;
            main = plus.android.runtimeMainActivity(); //获取activity
            var IntentFilter = plus.android.importClass('android.content.IntentFilter');
            filter = new IntentFilter();
            filter.addAction('com.android.server.scannerservice.broadcast'); // 换你的广播动作
            receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {
                onReceive: function(context, intent) {
                    plus.android.importClass(intent);
                    let code = intent.getStringExtra('scannerdata'); // 换你的广播标签
                    _this.queryCode(code);
                }
            });
        },
        startScan() {
            main.registerReceiver(receiver, filter);
        },
        stopScan() {
            main.unregisterReceiver(receiver);
        },
        queryCode: function(code) {
            //防重复
            if (_codeQueryTag) return false;
            _codeQueryTag = true;
            setTimeout(function() {
                _codeQueryTag = false;
            }, 150);
            var id = code;
            uni.$emit('scancodedate', { code: id });
        },
    },
};
// #endif
</script>