蓝牙功能，Android获得的advertisData内容不全
发布于 6 年前 作者 xiulanye 16543 次浏览 来自 问答

对wx.getBluetoothDevices(OBJECT)获得的advertisData进行操作，相同的代码，IOS获取到的advertisData下有5个字节，是所需要的广播内容，但Android获取到的advertisData下只有三个字节，相对于IOS少了前面两个字节的内容。想问下这是我自己获取方式不对吗？还是目前小程序对应Android有部分功能不支持？

//获取所有已发现的蓝牙设备 
getBluetoothDevices:function(){ 
  var that = this;
  wx.getBluetoothDevices({ 
    success: function(res){ 
      // success 
      var devices = res['devices'];
      var newDeviceItems = [];
      var device = [];
      for(var i=0;i<devices.length;i++) {
        device = devices[i];
        if(device["name"] != "未知设备"){
          var arryBuffer = new ArrayBuffer();
          arryBuffer = device["advertisData"];
          var uint8Array = Array.prototype.map.call(new Uint8Array(arryBuffer), x => ('00' + x.toString(16)).slice(-2)).join('');
          var dataView = new DataView(arryBuffer);
          console.log(device["deviceId"]);
          var len = dataView.byteLength;
          console.log("len: "+len);
          console.log(uint8Array);
          var flag = true;
          for(var j=0;j<newDeviceItems.length;j++){
            if(newDeviceItems[j].deviceId == device["deviceId"]){
              flag = false;
              break;
            }
          }
          if(flag){
            newDeviceItems.push({deviceName:device["name"],deviceId:device["deviceId"]});
          }
        }
      }
      that.setData({
        deviceItems: newDeviceItems
      })
    }, 
    fail: function(res) { 
      // fail
      console.log("getBluetoothDevices-fail");
      console.log(res);
    },
    complete: function(res) { 
      // complete 
      console.log("getBluetoothDevices-complete");
      console.log(res);
    }  
  });
}
1 回复

我不知道是不是他们微信开发人员的接口的更新，我现在调用接口的时候，在ios上获取的advertiseData数据长度比Android少，

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