5 app 实现 NFC读写标签数据 NFC标签初始化 NFC标签前台调度系统
云宾鸿
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script>
var NfcAdapter;
var NdefRecord;
var NdefMessage;
function listenNFCStatus() {
try {
var main = plus.android.runtimeMainActivity();
var Intent = plus.android.importClass('android.content.Intent');
var Activity = plus.android.importClass('android.app.Activity');
var PendingIntent = plus.android.importClass('android.app.PendingIntent');
var IntentFilter = plus.android.importClass('android.content.IntentFilter');
NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');
var nfcAdapter = NfcAdapter.getDefaultAdapter(main);
var intent = new Intent(main, main.getClass());
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
var pendingIntent = PendingIntent.getActivity(main, 0, intent, 0);
var ndef = new IntentFilter("android.nfc.action.TECH_DISCOVERED");
ndef.addDataType("*/*");
var intentFiltersArray = [ndef];
var techListsArray = [
["android.nfc.tech.IsoDep"],
["android.nfc.tech.NfcA"],
["android.nfc.tech.NfcB"],
["android.nfc.tech.NfcF"],
["android.nfc.tech.Nfcf"],
["android.nfc.tech.NfcV"],
["android.nfc.tech.NdefFormatable"],
["android.nfc.tech.MifareClassic"],
["android.nfc.tech.MifareUltralight"]
];
document.addEventListener("newintent",
function() {
console.error('newintent');
setTimeout(handle_nfc_data1, 1000);
}, false);
document.addEventListener("pause", function(e) {
if (nfcAdapter) {
nfcAdapter.disableForegroundDispatch(main);
console.log('pause');
}
}, false);
document.addEventListener("resume", function(e) {
if (nfcAdapter) {
console.log('resume');
nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
}
}, false);
nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
} catch (e) {
console.error(e);
}
}
function handle_nfc_data1() {
NdefRecord = plus.android.importClass("android.nfc.NdefRecord");
NdefMessage = plus.android.importClass("android.nfc.NdefMessage");
var main = plus.android.runtimeMainActivity();
var intent = main.getIntent();
console.log("action type:" + intent.getAction());
if ("android.nfc.action.TECH_DISCOVERED" == intent.getAction()) {
if (readyWriteData) {
__write(intent);
readyWriteData = false;
} else if (readyRead) {
__read(intent);
readyRead = false;
}
}
}
function showToast(msg) {
plus.nativeUI.toast(msg);
}
function __read(intent) {
try {
var content = "";
waiting.setTitle('请勿移开标签\n正在读取数据...');
var tag = plus.android.importClass("android.nfc.Tag");
tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
var bytesId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
console.log("bytesId:" + (bytesId));
console.log("十六进制ID:" + (bytesToHexString(tag.getId())));
waiting.close();
} catch (e) {
alert(e);
//TODO handle the exception
}
}
function bytesToHexString(inarray) {
var i, j, x;
var hex = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A",
"B", "C", "D", "E", "F"
];
var out = "";
for (j = 0; j < inarray.length; ++j) {
x = parseInt(inarray[j]) & 0xff;
i = (x >> 4) & 0x0f;
out += hex[i];
i = x & 0x0f;
out += hex[i];
}
return out;
}
function reverseTwo(str) {
var str1 = "";
for (var i = 1; i <= str.length; i++) {
str1 += str[i - 1];
if (i % 2 == 0) {
if (i == str.length) {
break;
}
str1 += ":";
}
}
var str2 = "";
for (var i = str1.split(":").length - 1; i >= 0; i--) {
str2 += str1.split(":")[i];
}
return str2;
}
document.addEventListener('plusready', listenNFCStatus, false);
var waiting;
var readyWriteData = false;
var readyRead = false;
function readData() {
readyRead = true;
waiting = plus.nativeUI.showWaiting("请将NFC标签靠近！");
}
</script>
<style>
</style>
</head>
<body>
<div class="button" onclick="readData()">读一读</div>
</body>
</html>这是安卓nfc的功能
参考下面这篇文章的，根据自己需求进行改良哦
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