如何在Android和Windows Phone之间使用NFC发送数据

Question

i searched a lot about this but i don't know how can I beam a Text String to WindowsPhone Device but i can do it From WindowsPhone To Android.

here is the code I'm using to Send Message From WindowsPhone to Android :

ProximityDevice device = ProximityDevice.GetDefault();
// Make sure NFC is supported
if (device!= null)
{
   long Id = device.PublishMessage("Windows.MessageFromWindowsPhoneToAndroid", "Test");
}

also i found a code in C# to receive a NFC Message :

ProximityDevice device = ProximityDevice.GetDefault();
// Make sure NFC is supported
if (device!= null)
{
   long Id = device.SubscribeForMessage ("Windows.NFCBeamMSGFromAndroid", messageReceived);
}

private void messageReceived(ProximityDevice sender, ProximityMessage message)
{
   MessageBox.Show("Message Received");
   Debug.WriteLine("Received from {0}:'{1}'", sender.DeviceId, message.DataAsString);
}

i test the send NFC message Function For WindowsPhone and i see the message ("MessageFromWindowsPhoneToAndroid") in Tags Application.

Answer 1

On Android, you want to create a NDEFRecord with a TNF of TNF_WELL_KNOWN and Type RTD_TEXT.

The payload is bytes and must be encoded with languageCodeLength, languageCode, text. The payload "hello, world" encoded with the language code "en" would be [2, 101, 110, 104, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100]

Put this NDEFRecord into a NDEFMessage and share via NFCAdapter.setNdefPushMessage(message, activity) ;