uniapp 在手持 PDA 上的激光扫码解决方案

uni.scanCode({
  //成功回调
  success: function (res) {
    //条码类型
    console.log(res.scanType);
    //条码的值
    console.log(res.result);
  },
  //失败回调
  fail: function (res) {},
  //完成回调
  complete: function (res) {},
});

<template>
  <view class="content"></view>
</template>
​
<script>
  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() {
      this.stopScan();
    },
    methods: {
      initScan() {
        let _this = this;
        main = plus.android.runtimeMainActivity();
        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.android.serial.BARCODEPORT_RECEIVEDDATA_ACTION");
        receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {
          onReceive: function(context, intent) {
            plus.android.importClass(intent);
                        //下面的getStringExtra内改为自己的广播标签
            let code = intent.getStringExtra("DATA");
            _this.queryCode(code);
          }
        });
      },
      startScan() {
        main.registerReceiver(receiver, filter);
      },
      stopScan() {
        main.unregisterReceiver(receiver);
      },
      queryCode: function(code) {
        if (_codeQueryTag) return false;
        _codeQueryTag = true;
        setTimeout(function() {
          _codeQueryTag = false;
        }, 150);
        var id = code
        console.log('id:', id)
        uni.$emit('scan', {
          code: id
        })
      }
    }
  }
</script>

<template>
  <view>我是index页面</view>
    <!-- 还要记得这里加上组件 -->
    <scan></scan>
</template>
​
<script>
    //记得引入组件
  import scan from "@/components/scan/scan.vue";
​
  export default {
        //引入组件
    components: {
      scan
    },
    data() {
      return {
        code: ''
      }
    },
    onShow: function() {
      let that = this
      uni.$off('scan') // 每次进来先 移除全局自定义事件监听器
      uni.$on('scan', function(data) {
                //扫码成功后的回调，你可以写自己的逻辑代码在这里
        console.log('扫码结果：', data.code);
      })
    },
    methods: {
​
    }
  }
</script>

<template>
  <view>
    <button class="bind">已绑定工号{{userCode}}</button>
  </view>
</template>
​
<script>
  export default {
    data() {
      return {
        userCode: '',
        main: '',
        receiver: '',
        filter: '',
      }
    },
    methods: {
            //打开扫描头的方法
      bindUserCode() {
        this.initScan();
        this.startScan();
      },
      initScan() {
        let that = this;
        //获取Android主Activity
        that.main = plus.android.runtimeMainActivity();
        //获取Android意图类
        let Intent = plus.android.importClass('android.content.Intent');
        //实例化意图
        let intent = new Intent();
        //定义意图，模拟按下L键，L键实际上是打开激光的物理键映射，由厂商提供
        intent.setAction("com.android.action.keyevent.KEYCODE_KEYCODE_SCAN_L_DOWN");
        //广播这个意图
        that.main.sendBroadcast(intent);
        //获取Android意图过滤类
        let IntentFilter = plus.android.importClass('android.content.IntentFilter');
        //实例化意图过滤
        that.filter = new IntentFilter();
        //获取扫码成功的意图广播
        that.filter.addAction("com.android.serial.BARCODEPORT_RECEIVEDDATA_ACTION");
        that.receiver = plus.android.implements('io.dcloud.feature.internal.reflect.BroadcastReceiver', {
          onReceive: function(context, intent) {
            plus.android.importClass(intent);
            let code = intent.getStringExtra("DATA");
                        //成功输出扫码内容
                        console.log(code);
          }
        });
      },
      startScan() {
        this.main.registerReceiver(this.receiver, this.filter);
      }
    }
  }
</script>