SmartCardReader 不会触发 CardAdded 方法？

Posted 2023-02-22

【中文标题】SmartCardReader 不会触发 CardAdded 方法？

【英文标题】：SmartCardReader won't fire CardAdded method?

【发布时间】：2016-08-24 06:58:27

【问题描述】：

我正在尝试让 Microsoft 手机在轻按 NFC 标签时触发并触发事件。但是，当标签被点击时，该方法不会触发。 cardReader_CardAdded 应该在标签被点击时触发，但它什么也不做。 代码如下：

public MainPage()
    
        this.InitializeComponent();

        smartCard();
    

    public async void smartCard()
    

        string selector = SmartCardReader.GetDeviceSelector();
        DeviceInformationCollection devices = await DeviceInformation.FindAllAsync(selector);
        foreach (DeviceInformation device in devices)
        
            SmartCardReader reader = await SmartCardReader.FromIdAsync(device.Id);
            reader.CardAdded += cardReader_CardAdded;
            reader.CardRemoved += cardReader_CardRemoved;
        
    
    private void cardReader_CardRemoved(SmartCardReader sender, CardRemovedEventArgs args)
    

    
    private async void cardReader_CardAdded(SmartCardReader sender, CardAddedEventArgs args)
    
        await HandleCard(args.SmartCard);
    

    private async Task HandleCard(SmartCard card)
    
        SmartCardProvisioning provisioning = await SmartCardProvisioning.FromSmartCardAsync(card);

        SmartCardStatus status;
        do
        
            status = await provisioning.SmartCard.GetStatusAsync();
         while (status == SmartCardStatus.Shared);

    

【参考方案1】：

回答：我忘记在 Package.appxmanifest 中的 Capabilities 下启用 Proximity