// 包路径
const package_NdefRecord = 'android.nfc.NdefRecord';
const package_NdefMessage = 'android.nfc.NdefMessage';
const package_TECH_DISCOVERED = 'android.nfc.action.TECH_DISCOVERED';
const package_Intent = 'android.content.Intent';
const package_Activity = 'android.app.Activity';
const package_PendingIntent = 'android.app.PendingIntent';
const package_IntentFilter = 'android.content.IntentFilter';
const package_NfcAdapter = 'android.nfc.NfcAdapter';
const package_Ndef = 'android.nfc.tech.Ndef';
const package_NdefFormatable = 'android.nfc.tech.NdefFormatable';
const package_Parcelable = 'android.os.Parcelable';
const package_String = 'java.lang.String';
let NfcAdapter;
let NdefRecord;
let NdefMessage;
let readyWriteData = false;
let readyRead = false;
let noNFC = false;
let techListsArray = [
["android.nfc.tech.IsoDep"],
["android.nfc.tech.NfcA"],
["android.nfc.tech.NfcB"],
["android.nfc.tech.NfcF"],
["android.nfc.tech.Ndef"],
["android.nfc.tech.NfcV"],
["android.nfc.tech.NdefFormatable"],
["android.nfc.tech.MifareClassic"],
["android.nfc.tech.MifareUltralight"]
];
// 要写入的数据
let text = '{id:123,name:nfc,stie:cssmini.com}';
let readResult = '';
export default {
listenNFCStatus: function() {
let that = this;
try {
let main = plus.android.runtimeMainActivity();
let Intent = plus.android.importClass('android.content.Intent');
let Activity = plus.android.importClass('android.app.Activity');
let PendingIntent = plus.android.importClass('android.app.PendingIntent');
let IntentFilter = plus.android.importClass('android.content.IntentFilter');
NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');
let nfcAdapter = NfcAdapter.getDefaultAdapter(main);
if (nfcAdapter == null) {
uni.showToast({
title: '设备不支持NFC!',
icon: 'none'
})
noNFC = true;
return;
}
if (!nfcAdapter.isEnabled()) {
uni.showToast({
title: '请在系统设置中先启用NFC功能!',
icon: 'none'
});
noNFC = true;
return;
} else {
noNFC = false;
}
let intent = new Intent(main, main.getClass());
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
let pendingIntent = PendingIntent.getActivity(main, 0, intent, 0);
let ndef = new IntentFilter("android.nfc.action.TECH_DISCOVERED");
ndef.addDataType("*/*");
let intentFiltersArray = [ndef];
plus.globalEvent.addEventListener('newintent', function() {
console.log('newintent running');
// 监听 NFC
setTimeout(that.nfcRuning(), 1000);
});
plus.globalEvent.addEventListener('pause', function(e) {
console.log('pause running');
if (nfcAdapter) {
//关闭前台调度系统
//恢复默认状态
nfcAdapter.disableForegroundDispatch(main);
}
});
plus.globalEvent.addEventListener('resume', function(e) {
console.log('resume running');
if (nfcAdapter) {
//开启前台调度系统
nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
}
});
nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
} catch (e) {
console.error(e);
}
},
nfcRuning: function() {
NdefRecord = plus.android.importClass("android.nfc.NdefRecord");
NdefMessage = plus.android.importClass("android.nfc.NdefMessage");
let main = plus.android.runtimeMainActivity();
let intent = main.getIntent();
let that = this;
console.log("action type:" + intent.getAction());
if (package_TECH_DISCOVERED == intent.getAction()) {
console.log("readyWriteData=" + readyWriteData + " readyRead=" + readyRead)
if (readyWriteData) {
that.write(intent);
readyWriteData = false;
} else if (readyRead) {
that.read(intent);
readyRead = false;
}
}
},
write(intent) {
try {
toast('请勿移开标签 正在写入...');
console.log("text=" + text);
let textBytes = plus.android.invoke(text, "getBytes");
// image/jpeg text/plain
let textRecord = new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
plus.android.invoke("text/plain", "getBytes"),
plus.android.invoke("", "getBytes"), textBytes);
let message = new NdefMessage([textRecord]);
let Ndef = plus.android.importClass('android.nfc.tech.Ndef');
let NdefFormatable = plus.android.importClass('android.nfc.tech.NdefFormatable');
let tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
let ndef = Ndef.get(tag);
if (ndef != null) {
// 待写入的数据长度
let size = message.toByteArray().length;
ndef.connect();
if (!ndef.isWritable()) {
toast('tag不允许写入!');
return;
}
if (ndef.getMaxSize() < size) {
toast('文件大小超出容量!');
return;
}
ndef.writeNdefMessage(message);
toast('写入数据成功!');
return;
} else {
let format = NdefFormatable.get(tag);
if (format != null) {
try {
format.connect();
format.format(message);
toast('格式化tag并且写入message');
return;
} catch (e) {
toast('格式化tag失败.');
return;
}
} else {
toast('Tag不支持NDEF');
return;
}
}
} catch (e) {
toast('写入失败');
console.log("error=" + e);
}
},
read(intent) {
this.getData(intent);
},
byteArrayToHexString: function(inarray) { // converts byte arrays to string
let i, j, inn;
let hex = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"];
let out = "";
for (j = 0; j < inarray.length; ++j) {
if(inarray[j]==0) continue;
inn = inarray[j] & 0xff;
i = (inn >>> 4) & 0x0f;
out += hex[i];
i = inn & 0x0f;
out += hex[i];
}
return out;
},
writeData: function() {
if (noNFC) {
toast('请检查设备是否支持并开启 NFC 功能!');
return;
}
// 监听事件,触发条件
readyWriteData = true;
toast('请将NFC标签靠近!');
},
readData: function() {
if (noNFC) {
toast('请检查设备是否支持并开启 NFC 功能!');
return;
}
// 监听事件,触发条件
readyRead = true;
toast('请将NFC标签靠近!');
},
getData: function(intent) {
var sector = 1;//第一扇区
var tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
let mc = plus.android.importClass('android.nfc.tech.MifareClassic');
let mfc = mc.get(tag);
console.log('mfc', mfc)
mfc.connect();
var cmdBytes = [0x6b, 0x69, 0x61, 0x6A, 0x75, 0x6E]//a密码 根据自己具体的来
console.log('mfc', cmdBytes)
var auth = mfc.authenticateSectorWithKeyA(sector, cmdBytes)
console.log('auth', auth);
if (!auth) return;
try {
var tmpRet,result;
for (var i = 0; i < 3; i++) {
tmpRet = mfc.readBlock(sector * 4 + i);
result+=this.hexCharCodeToStr(this.byteArrayToHexString(tmpRet))
}
console.log('result',result);
} catch (e) {
this.ICERROR = e.message;
console.error(e);
} finally {
mfc.close();
}
},
//Key处理函数
HexStringToByteArray: function(instr) {
var hexA = new Array();
var pos = 0;
var len = instr.length / 2;
for (var i = 0; i < len; i++) {
var s = instr.substr(pos, 2);
var v = parseInt(s, 16);
if (v >= 128)
v = v - 256;
hexA.push(v);
pos += 2;
}
return hexA;
},
hexCharCodeToStr: function(hexCharCodeStr) {
var trimedStr = hexCharCodeStr.trim();
var rawStr =
trimedStr.substr(0, 2).toLowerCase() === "0x" ?
trimedStr.substr(2) :
trimedStr;
var len = rawStr.length;
if (len % 2 !== 0) {
alert("Illegal Format ASCII Code!");
return "";
}
var curCharCode;
var resultStr = [];
for (var i = 0; i < len; i = i + 2) {
curCharCode = parseInt(rawStr.substr(i, 2), 16); // ASCII Code Value
resultStr.push(String.fromCharCode(curCharCode));
}
return resultStr.join("");
}
}
function toast(content) {
uni.showToast({
title: content,
icon: 'none'
})
}
看我这个已实战可以读出加密扇区数据