public async Task EnumerateDevicesAsync()
{
BluetoothService btService = BluetoothService.GetDefault();
btService.SearchForPairedDevicesFailed += btService_SearchForPairedDevicesFailed;
btService.SearchForPairedDevicesSucceeded += btService_SearchForPairedDevicesSucceeded;
await btService.SearchForPairedDevicesAsync();
}
private async void QueueContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
var Deferral = args.GetDeferral();
try
{
if (BluetoothControl.SelectedIndex == -1 || !BluetoothDeviceCollection[BluetoothControl.SelectedIndex].DeviceInfo.Pairing.IsPaired)
{
Tips.Text = Globalization.GetString("BluetoothUI_Tips_Text_1");
Tips.Visibility = Visibility.Visible;
args.Cancel = true;
}
else
{
//首先连接到RFComm服务，获取到设备的规范名称
string CanonicalName = await ConnectToRfcommServiceAsync(BluetoothDeviceCollection[BluetoothControl.SelectedIndex]).ConfigureAwait(true);
BluetoothService BTService = BluetoothService.GetDefault();
BTService.SearchForPairedDevicesSucceeded += BTService_SearchForPairedDevicesSucceeded;
void BTService_SearchForPairedDevicesSucceeded(object sender, SearchForPairedDevicesSucceededEventArgs e)
{
BTService.SearchForPairedDevicesSucceeded -= BTService_SearchForPairedDevicesSucceeded;
if (e.PairedDevices.FirstOrDefault((Device) => Device.DeviceHost.CanonicalName == CanonicalName) is BluetoothDevice BTDevice)
{
ObexServiceProvider.SetObexInstance(BTDevice, BluetoothDeviceCollection[BluetoothControl.SelectedIndex].Name);
if (ObexServiceProvider.GetObexInstance() == null)
{
throw new Exception(Globalization.GetString("BluetoothUI_Tips_Text_2"));
}
}
else
{
throw new Exception(Globalization.GetString("BluetoothUI_Tips_Text_2"));
}
}
//能到这里说明该设备已经配对，启动搜索，完成后PairedBluetoothDeviceCollection被填充
await BTService.SearchForPairedDevicesAsync().ConfigureAwait(true);
}
}
catch (Exception e)
{
args.Cancel = true;
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
Tips.Text = e.Message;
Tips.Visibility = Visibility.Visible;
});
}
finally
{
Deferral.Complete();
}
}
private async void ContentDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
{
var Deferral = args.GetDeferral();
if (BluetoothControl.SelectedIndex == -1 || !BluetoothDeviceCollection[BluetoothControl.SelectedIndex].DeviceInfo.Pairing.IsPaired)
{
Tips.Text = "请先选择一个已配对的设备";
Tips.Visibility = Visibility.Visible;
args.Cancel = true;
Deferral.Complete();
return;
}
try
{
//首先连接到RFComm服务，获取到设备的规范名称
string CanonicalName = await ConnectToRfcommServiceAsync(BluetoothDeviceCollection[BluetoothControl.SelectedIndex]);
BluetoothService BTService = BluetoothService.GetDefault();
BTService.SearchForPairedDevicesSucceeded += (s, e) =>
{
PairedBluetoothDeviceCollection = e.PairedDevices;
};
//能到这里说明该设备已经配对，启动搜索，完成后PairedBluetoothDeviceCollection被填充
await BTService.SearchForPairedDevicesAsync();
foreach (var BTDevice in from BTDevice in PairedBluetoothDeviceCollection
//找到符合刚刚RFComm服务获取到的规范名称的蓝牙设备
where BTDevice.DeviceHost.CanonicalName == CanonicalName
select BTDevice)
{
//从该设备的BluetoothDevice对象获取到Obex服务的实例
ObexServiceProvider.SetObexInstance(BTDevice);
break;
}
if (ObexServiceProvider.GetObexNewInstance() == null)
{
throw new Exception("未能找到已配对的设备，请打开该设备的蓝牙开关");
}
}
catch (Exception e)
{
Tips.Text = e.Message;
Tips.Visibility = Visibility.Visible;
}
Deferral.Complete();
}