Question

我有Windows Phone应用程序，通过蓝牙（Bluetooth App To Device）控制设备。在WP8中它运行良好。这是代码

1）搜索所有配对设备

PeerFinder.AlternateIdentities["Bluetooth:Paired"] = "";
var peers = await PeerFinder.FindAllPeersAsync();
ObservableCollection<PeerInformation> devicesCollection = new ObservableCollection<PeerInformation>();
foreach (var peer in peers)
{
   devicesCollection.Add(peer); 
}

2）连接到设备

socket = new StreamSocket();
await socket.ConnectAsync(selectedPeer.HostName, "{00001101-0000-1000-8000-00805F9B34FB}");

3）连接到PC或其他手机以通过Obex发送文件

socket = new Windows.Networking.Sockets.StreamSocket();
await socket.ConnectAsync(_selectedDevice.HostName, "{00001105-0000-1000-8000-00805f9b34fb}");

迁移到Windows Phone 8.1（SilverLight）后，这件事情无效：

await socket.ConnectAsync(selectedPeer.HostName, "{00001101-0000-1000-8000-00805F9B34FB}");

我在连接期间遇到了运行时异常：找不到元素，数据不再可用，访问被拒绝

我已经拥有SilverLight功能ID_CAP_NETWORK，ID_CAP_PROXIMITY

我在Package.appmainfest中设置....

<m2:DeviceCapability Name="bluetooth.rfcomm">
  <m2:Device Id="any">
    <m2:Function Type="name:serialPort" />
    <m2:Function Type="name:obexObjectPush" />
    <m2:Function Type="name:obexFileTransfer" />        
  </m2:Device>

我尝试使用＆＃34; Rfcomm＆＃34;课程

var devicesInfoCollection = await DeviceInformation.FindAllAsync(
 RfcommDeviceService.GetDeviceSelector(RfcommServiceId.SerialPort));
sensorCollection.Clear();
foreach (DeviceInformation dInfo in devicesInfoCollection)
{
  sensorCollection.Add(dInfo);
}

连接

RfcommDeviceService rfcommService = await RfcommDeviceService.FromIdAsync(selectedDeviceInfo.Id);
socket = new StreamSocket();
await socket.ConnectAsync(rfcommService.ConnectionHostName, rfcommService.ConnectionServiceName, 
  SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication);

断线

if (dataWriter != null)
{
   dataWriter.DetachStream();
   dataWriter.Dispose();
   dataWriter = null;
}                   
if (socket != null)
{
   socket.Dispose();
   socket = null;
}

问题在于它非常奇怪。当我尝试连接时，断开连接然后重新连接我不能。设备从列表中消失。设备位于配对设备列表中，但它从SerialPort设备列表中消失。当我尝试连接时，我发现了＃34;未找到元素＆＃34;。看起来电话并没有打破蓝牙连接。我必须转到蓝牙设置并手动中断。

RFCOMM连接工作不稳定

0 个答案: