Question

我正在尝试为连接到BLE设备的手机编写应用程序。

设备已配对，我编辑了appxmanifest以启用蓝牙功能。

但是当我运行应用程序时，下面的代码

await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);

导致抛出异常：mscorlib.ni.dll中的“System.IO.FileNotFoundException”

有没有人知道我做错了什么？

谢谢！

var deviceList = await DeviceInformation.FindAllAsync(GattDeviceService.GetDeviceSelectorFromUuid(GattServiceUuids.GenericAccess), null);
int count = deviceList.Count();
if (count > 0)
{
    var deviceInfo = deviceList.Where(x => x.Name == "XC-Tracer").FirstOrDefault();
    if (deviceInfo != null)
    {
        if (deviceInfo.IsEnabled)
        {
            var bleDevice = await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
            var deviceServices = bleDevice.GattServices;
        }
    }
}

Answer 1

我能够通过使用GattDeviceService而不是使用BluetoothLEDevice类来实现这一点：

var deviceList = await DeviceInformation.FindAllAsync(GattDeviceService.GetDeviceSelectorFromUuid(GattServiceUuids.GenericAccess), null);
int count = deviceList.Count();
if (count > 0)
{
    var deviceInfo = deviceList.Where(x => x.Name == "XC-Tracer").FirstOrDefault();
    if (deviceInfo != null)
    {
        if (deviceInfo.IsEnabled)
        {
            var bleDevice = await GattDeviceService.FromIdAsync(deviceInfo.Id);
            var deviceServices = bleDevice.GattServices;
        }
    }
}

c＃UWP BluetoothLEDevice.FromIdAsync System.IO.FileNotFoundException

1 个答案: