Question

我正在使用WPF应用程序中的以下代码进行配对测试，但它总是以失败状态失败。

要使用BluetoothLe库，我刚刚添加了参考（C：\ Program Files（x86）\ Windows Kits \ 10 \ UnionMetadata \ Windows.winmd）

<!DOCTYPE html>
<html ng-app="app">

<head>
  <script data-require="jquery@3.1.1" data-semver="3.1.1" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <link data-require="bootstrap@3.3.0" data-semver="3.3.0" rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" />
  <script data-require="bootstrap@3.3.0" data-semver="3.3.0" src="https://netdna.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
  <script data-require="angular.js@1.6.0" data-semver="1.6.0" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.0/angular.js"></script>
  <script data-require="ng-messages@1.3.16" data-semver="1.3.16" src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.16/angular-messages.min.js"></script>
  <script src="script.js"></script>
  <script src="directive.js"></script>
</head>

<body class="container" ng-controller="AppController as vm">
  <h1>Hello Plunker!</h1>
  <form class="form-horizontal" name="wheelForm" novalidate="">
    <div class="row">
      <div class="form-group">
        <label class="col-md-4 control-label">Name</label>
        <div class="col-md-8" ng-class="{ 'has-error': wheelForm.username.$touched && wheelForm.username.$invalid }">
          <input type="text" name="username" class="form-control" ng-model="vm.formdata.username" required="" />
          <div ng-if="wheelForm.username.$touched && wheelForm.username.$invalid" ng-messages="wheelForm.username.$error" class="has-error">
            <span ng-message="required">Please enter name.</span>
          </div>
        </div>
      </div>
      <div class="form-group ">
        <!--<label class="col-md-4"># of Bikes</label>{{wheelForm.vehicle_bike | json }}-->
        <div class="col-md-8" ng-class="{ 'has-error': wheelForm.vehicle_bike.$touched && wheelForm.vehicle_bike.$invalid }">
          <input type="text" placeholder="Enter 0 for no vehicles" name="vehicle_bike" class="form-control" ng-model="vm.formdata.vehicles.bike" validate-number="{min:1, max:16}" ng-required="true"  />
          <div ng-messages="wheelForm.vehicle_bike.$error" ng-if="wheelForm.vehicle_bike.$touched && wheelForm.vehicle_bike.$invalid" class="text-danger">
            <!-- <span ng-message="parse">Enter 0 if no bike servlet required</span> -->
            <span ng-message="validRange">Number must be between 0 and 16.</span>
            <span ng-message="validNumber">Please enter valid Number.</span>
          </div>
        </div>
      </div>
      <div class="form-group ">
        <!--<label class="col-md-4"># of Cars</label>{{wheelForm.vehicle_car | json }}-->
        <div class="col-md-8" ng-class="{ 'has-error': wheelForm.vehicle_car.$touched && wheelForm.vehicle_car.$invalid }">
          <input type="text" placeholder="Enter 0 for no vehicles" name="vehicle_car" class="form-control" ng-model="vm.formdata.vehicles.car" ng-required="true" validate-number="{min:1, max:16}" required />
          <div ng-messages="wheelForm.vehicle_car.$error" ng-if="wheelForm.vehicle_car.$touched && wheelForm.vehicle_car.$invalid" class="text-danger">
            <span ng-message="validRange">Number must be between 0 and 16.</span>
            <span ng-message="validNumber">Please enter valid Number.</span>
          </div>
        </div>
      </div>
      <div class="form-group ">
        <!--<label class="col-md-4"># of Cycles</label>{{wheelForm.vehicle_cycle | json }}-->
        <div class="col-md-8" ng-class="{ 'has-error': wheelForm.vehicle_cycle.$touched && wheelForm.vehicle_cycle.$invalid }">
          <input type="text" placeholder="Enter 0 for no vehicles" min="1" name="vehicle_cycle" class="form-control" ng-model="vm.formdata.vehicles.cycle" ng-required="true" validate-number="{min:1, max:16}" required />
          <div ng-messages="wheelForm.vehicle_cycle.$error" ng-if="wheelForm.vehicle_cycle.$touched && wheelForm.vehicle_cycle.$invalid" class="text-danger">
            <span ng-message="validRange">Number must be between 0 and 16.</span>
            <span ng-message="validNumber">Please enter valid Number.</span>
          </div>
        </div>
      </div>
      <div class="form-actions m-t-lg text-center">
        <button ng-disabled="wheelForm.$invalid" class="btn btn-block btn-success" ng-click="vm.updateForm()">
          Update
        </button>
      </div>
    </div>
  </form>
</body>

</html>

奇怪的是

使用相同的代码与UWP App进行配对。
在UWP和WPF应用程序中取消配对都没问题。
不同之处在于UWP应用程序总是弹出系统对话框以确认配对和取消，但WPF应用程序不会显示任何对话框。

有人能帮助我吗？

解决！谢谢。我刚刚使用了自定义配对。

if (!DeviceInformation.Pairing.IsPaired)
{
  Logger.Info($"{DeviceInformation.Name} Try Pairing");
  var result = await DeviceInformation.Pairing.PairAsync(DevicePairingProtectionLevel.None);

  Logger.Info($"{result.Status}");
}

Answer 1

此时“经典”桌面Windows应用程序不支持配对功能。您可以尝试使用Desktop Bridge转换您的应用，或者您可以尝试通过DeviceInformationCustomPairing自行配对，但它需要您拥有用户界面。

（资料来源：this MSDN discussion）

Answer 2

我遇到类似问题的类似问题 - 尽管它并不完全是你所要求的，但我认为对于遇到这个问题的其他人可能会有用：

我的问题是 args.Accept（）似乎对配对过程没有任何影响，有时配对会失败，有时会超时。

即使我不确定原因，原因是我从 App.Current.Dispatcher.InvokeAsync（）中调用了 Accept（），而不是直接调用它。在 Task.Run（）中调用也可以正常工作。

Answer 3

正如MS人员所说here，非UWP程序（如桌面和控制台应用程序）不正式支持应用程序内配对。但是，正如Peter Torr所示，您可以尝试通过DeviceInformationCustomPairing＆＃34;自己进行配对。

这段代码对我有用;但是，仅适用于DevicePairingKinds.ConfirmOnly和DevicePairingKinds.ProvidePin（其他选项会导致RequiredHandlerNotRegistered错误，但没有其他处理程序可以注册。）：

DeviceInformationCustomPairing p = DeviceInformation.Pairing.Custom;
p.PairingRequested += PairingRequestedHandler;
var pairingResult = await p.PairAsync(DevicePairingKinds.ConfirmOnly);
//or:
//var pairingResult = await p.PairAsync(DevicePairingKinds.ProvidePin);

可以从official samples获取处理程序，或者使用这个非常简化的版本：

private static void PairingRequestedHandler(DeviceInformationCustomPairing sender, DevicePairingRequestedEventArgs args)
{
    switch (args.PairingKind)
    {
        case DevicePairingKinds.ConfirmOnly:
            // Windows itself will pop the confirmation dialog as part of "consent" if this is running on Desktop or Mobile
            // If this is an App for 'Windows IoT Core' or a Desktop and Console application
            // where there is no Windows Consent UX, you may want to provide your own confirmation.
            args.Accept();
            break;

        case DevicePairingKinds.ProvidePin:
            // A PIN may be shown on the target device and the user needs to enter the matching PIN on 
            // this Windows device. Get a deferral so we can perform the async request to the user.
            var collectPinDeferral = args.GetDeferral();
            string pinFromUser = "952693";
            if (!string.IsNullOrEmpty(pinFromUser))
            {
                args.Accept(pinFromUser);
            }
            collectPinDeferral.Complete();
            break;
    }
}

常量变量pinFromUser只是一个例子。显然必须要求用户提供！

DeviceInformation PairAsync在WPF中不起作用

3 个答案: