c#UWP BluetoothLEDevice.FromIdAsync System.IO.FileNotFoundException
问题描述:
我正在尝试为我的手机编写一个应用程序,该应用程序连接到BLE设备。c#UWP BluetoothLEDevice.FromIdAsync System.IO.FileNotFoundException
该设备已配对,我编辑了appxmanifest以启用蓝牙功能。
但是当我运行应用程序,下面的代码,
await BluetoothLEDevice.FromIdAsync(deviceInfo.Id);
导致异常抛出:“System.IO.FileNotFoundException”在mscorlib.ni.dll
没有人有一个想法我做错了什么?
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;
}
}
}
答
我能够通过使用GattDeviceService而不是使用BluetoothLEDevice类来得到这个工作:
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;
}
}
}