private async Task <ProximityDevice> GetNfcDevice()
{
ProximityDevice device = null;
string selectorString = ProximityDevice.GetDeviceSelector();
DeviceInformationCollection deviceInfoCollection =
await DeviceInformation.FindAllAsync(selectorString, new List <string>() { "{FB3842CD-9E2A-4F83-8FCC-4B0761139AE9} 2" });
if (deviceInfoCollection.Count > 0)
{
foreach (DeviceInformation info in deviceInfoCollection)
{
Log("Found: " + info.Name);
foreach (string prop in info.Properties.Keys)
{
object value = info.Properties[prop];
if (null != value)
{
Log(prop + ": " + value.ToString());
}
}
device = ProximityDevice.FromId(info.Id);
}
}
return(device);
}
public List <DeviceInfo> CreateList()
{
List <DeviceInfo> selectors = new List <DeviceInfo>();
// Pre-canned device class selectors
selectors.Add(new DeviceInfo()
{
DisplayName = "All Device Interfaces (default)", DeviceClassSelector = DeviceClass.All, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Audio Capture", DeviceClassSelector = DeviceClass.AudioCapture, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Audio Render", DeviceClassSelector = DeviceClass.AudioRender, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Image Scanner", DeviceClassSelector = DeviceClass.ImageScanner, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Location", DeviceClassSelector = DeviceClass.Location, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Portable Storage", DeviceClassSelector = DeviceClass.PortableStorageDevice, Selection = null
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Video Capture", DeviceClassSelector = DeviceClass.VideoCapture, Selection = null
});
// A few examples of selectors built dynamically by windows runtime apis.
selectors.Add(new DeviceInfo()
{
DisplayName = "Human Interface (HID)", Selection = HidDevice.GetDeviceSelector(0, 0)
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Activity Sensor", Selection = ActivitySensor.GetDeviceSelector()
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Pedometer", Selection = Pedometer.GetDeviceSelector()
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Proximity", Selection = ProximityDevice.GetDeviceSelector()
});
selectors.Add(new DeviceInfo()
{
DisplayName = "Proximity Sensor", Selection = ProximitySensor.GetDeviceSelector()
});
return(selectors);
}
private void CreateDeviceWatcher()
{
string selectorString = ProximityDevice.GetDeviceSelector();
DeviceWatcher watcher = DeviceInformation.CreateWatcher(selectorString);
watcher.Added += Watcher_Added;
watcher.Removed += Watcher_Removed;
watcher.Updated += Watcher_Updated;
watcher.EnumerationCompleted += Watcher_EnumerationCompleted;
watcher.Start();
}
private async Task <ProximityDevice> GetNfcDevice()
{
ProximityDevice device = null;
string selectorString = ProximityDevice.GetDeviceSelector();
DeviceInformationCollection deviceInfoCollection =
await DeviceInformation.FindAllAsync(selectorString, new List <string>() { "{FB3842CD-9E2A-4F83-8FCC-4B0761139AE9} 2" });
if (deviceInfoCollection.Count > 0)
{
foreach (DeviceInformation info in deviceInfoCollection)
{
Log($"Found: {info.Name} ");
Log($"Kind {info.Kind.ToString()} ");
foreach (string prop in info.Properties.Keys)
{
object value = info.Properties[prop];
if (null != value)
{
if (value is string[])
{
string output = string.Empty;
string[] vals = value as string[];
foreach (var v in vals)
{
output += v.ToString() + ", ";
}
Log(prop + ": " + output);
}
else
{
Log(prop + ": " + value.ToString());
}
}
if ("{FB3842CD-9E2A-4F83-8FCC-4B0761139AE9} 2" == prop)
{
Log("Found NFC device");
}
}
device = ProximityDevice.FromId(info.Id);
}
}
return(device);
}
private async void FindDevice()
{
string selectorString = ProximityDevice.GetDeviceSelector();
DeviceInformationCollection deviceInfoCollection =
await DeviceInformation.FindAllAsync(selectorString, null);
if (deviceInfoCollection.Count == 0)
{
Log("No proximity devices found.");
}
else
{
foreach (DeviceInformation dev in deviceInfoCollection)
{
Log($"Proximity Device id {dev.Id} Kind {dev.Kind.ToString()} ");
proximityDevice = ProximityDevice.FromId(dev.Id);
}
}
}
private void StartClick(object sender, RoutedEventArgs e)
{
// Bắt đầu bằng cách lấy thiết bị NFC.
string id = ProximityDevice.GetDeviceSelector();
proximityDevice = ProximityDevice.GetDefault();
if (proximityDevice == null)
{
this.OutputString("Devices not Found");
}
else
{
// Thêm sự kiện DeviceArrived và DeviceDeparted.
// Hai sự kiện được kích hoạt khi nhận được thiết bị trong vùng hạot động hoặc thiết bị rời khỏi vùng hoạt động
proximityDevice.DeviceArrived += DeviceArrived;
proximityDevice.DeviceDeparted += DeviceDeparted;
this.OutputString("Tap to connect ready");
// Liên tục gởi gói tin, vì NFC là kết nối gần nên không cần bảo mật gì mà chỉ cần gửi gói tin đi thuần tuý
// Tham số thứ nhất messageType, có dang Windows.*, với * là chuỗi tự định nghĩa. Ngoài ra còn có các format khác.
this.proximityDevice.PublishMessage("Windows.demo", "My name is Tung");
}
}
