phonegap-nfc - write a message to unformatted tags, read text message from NDEF tags

phoengap-nfc-issue-80.js

// handle unformatted tags
nfc.addNdefFormatableListener(
    function (nfcEvent) {

        // NDEF message with one record
        var message = [
            ndef.textRecord("hello, world")
        ];

        nfc.write(
            message, 
            function() {
                alert("Wrote message to tag");
            },
            function(error) {
                alert("Write failed " + JSON.stringify(error));                     
            }
        );
    }, 
    function () {
        console.log("Listening for NDEF Formatable Tags");
    },
    function (error) {
        alert("Failed to add listener for NDEF Formatable Tags");  
    }                    
);

// handle NDEF tags
nfc.addNdefListener(            
    function (nfcEvent) {
        var tag = nfcEvent.tag,
            ndefMessage = tag.ndefMessage,
            firstRecord = ndefMessage[0],
            payload = firstRecord.payload,
            text;
            
        // assume we read a text message with "en" encoding
        // remove the encoding info and convert to string
        text = nfc.bytesToString(payload.slice(3));                
                                        
        alert(text);
    },
    function () {
        console.log("Listening for NDEF Tags");
    },
    function (error) {
        alert("Failed to add listener for NDEF Tags");                                     
    }                    
);

hi!

thank for the code, do you know if can i read mifare classic witho some phonegap plugin?

thanks

Hi Don,
I tried your code to write a tag. It seems to work...I get into Listening mode for NDF Formattable Tags.
Problem is that when I tap a tag, the NFC service detects it and bring up a popup rather than let my app handle it.
What do I need to do to disable this?
Thanks,
Pat.