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→Receiving NDEF messages, via MozActivity
== Receiving NDEF messages, via MozActivity ==
Setup an Activity handler for incoming NDEF messages. The web activity chooser UI will route the messsage to the user selected application if there is more than one match. Currently, only NDEF is supported, although individual nfc tags can actually be compatible with multiple legacy and proprietary technology types.
Applications that do not have "'''nfc'''" read or write permissions can still get NDEF events via activities, and act on the data. The raw NDEF data is included with the activity, should the application wish to process any special properties of more complex NDEF data structures.
If the NFC NDEF tag type is well known, such as URIs, the activity will be delievered with some extra fields already parsed.
navigator.mozSetMessageHandler('activity', NfcActivityHandler);
function NfcActivityHandler(activity) {
var activityName = activity.source.name;
var data = activity.source.data;
switch (activityName) {
case 'nfc-ndef-discovered':
console.log('nfc ndef message records(s): ' + JSON.stringify(data.records));
handleNdefDiscovered(data);
break;
}
}
== Sending/Writing NDEF messages in P2P mode ==
