下面程式碼也許有助你使用cordova的NFC外掛功能，自己理解吧，哦，說一下，這是前端Html JavaScript方法，非java 外掛

前提：配置cordova的外掛方法,還不會就自己度娘。

HTML頁面上有個 id='state' 文字框或者label，顯示NFC狀態。

關鍵程式碼在initNFC 之後，前面都是生成程式碼。

var app = {
	// Application Constructor
	initialize: function() {
		this.bindEvents();
	},
	// Bind Event Listeners
	//
	// Bind any events that are required on startup. Common events are:
	// 'load', 'deviceready', 'offline', and 'online'.
	bindEvents: function() {
		document.addEventListener('deviceready', this.onDeviceReady, false);
	},
	// deviceready Event Handler
	//
	// The scope of 'this' is the event. In order to call the 'receivedEvent'
	// function, we must explicitly call 'app.receivedEvent(...);'
	onDeviceReady: function() {
		function failure(reason) {
			console.log("啟動錯誤");
			$("#state").text("啟動錯誤" + reason);
		}
		console.log("啟動成功");
		//按鈕事件
		document.addEventListener("backbutton", eventBackButton, false); //返回鍵
		document.addEventListener("menubutton", eventMenuButton, false); //選單鍵
		document.addEventListener("searchbutton", eventSearchButton, false); //搜尋鍵
		initNFC();
	
	},

};

//返回鍵
function eventBackButton() {
	window.location.href = "indexList.html";
}
//選單鍵
function eventMenuButton() {
	//window.plugins.ToastPlugin.show_short('點選了 選單 按鈕!');
}
//搜尋鍵
function eventSearchButton() {
	//window.plugins.ToastPlugin.show_short('點選了 搜尋 按鈕!');
}

function initNFC() {
	console.log("NFC初始化");
	if (typeof(nfc) == "undefined") {

		$("#state").text("您的機器沒有NFC功能,或者NFC功能沒有開啟");

	} else {
		//舊系統使用監聽
		nfc.addTagDiscoveredListener(nfccallback, nfconSuccesscallback, nfcerrorcallback);
		//新系統使用監聽
		nfc.addNdefFormatableListener(nfccallback, nfconSuccesscallback, nfcerrorcallback);
	}

}

function nfccallback(nfcEvent) {
	$("#state").text("NFC已經讀取");
	var tag = nfcEvent.tag,
		o_rfid = nfc.bytesToHexString(tag.id),
		rfid = o_rfid.toUpperCase();
	checkform(rfid);
	//$("#state").text('rfid=' + rfid);
};

function nfconSuccesscallback() { // error callback
	$("#state").text("NFC已經開啟");

};

function nfcerrorcallback(error) { // error callback
	$("#state").text("NFC功能錯誤！" + error);

};

function checkform(ID) {
//讀卡和校驗
}

app.initialize();