uniapp 中实现NF功能
一、前期准备
-
1、在manifest.json文件中开发NCF权限
-
2、需要注意这里更改了manifest.json中的内容需要整包更新客户端包才能生效，如果是服务器热更新下载的包不生效
二、实现示例
<template>
<!-- 标签绑定-明细 -->
<view id="page">
<view class="list-item flex align-items justify-between">
<view class="title flex align-items"><text class="gray">标签编码</text></view>
<text class="gray">{
{
formData.bind_code }}</text>
</view>
</view>
</template>
<script>
var NfcAdapter;
export default {
data() {
return {
};
},
onLoad(options) {
},
onShow() {
this.NFCInit();
},
onHide() {
this.NFCReadUID();
},
methods: {
// nfc入口
NFCInit() {
try {
var main = plus.android.runtimeMainActivity();
//console.log(main);
var Intent = plus.android.importClass('android.content.Intent');
// console.log(Intent);
var Activity = plus.android.importClass('android.app.Activity');
//console.log(Activity);
var PendingIntent = plus.android.importClass('android.app.PendingIntent');
// console.log(PendingIntent);
var IntentFilter = plus.android.importClass('android.content.IntentFilter');
// console.log(IntentFilter);
// var Uri = plus.android.importClass('android.net.Uri');
// var Bundle = plus.android.importClass('android.os.Bundle');
// var Handler = plus.android.importClass('android.os.Handler');
//console.log(Handler);
NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');
//console.log(NfcAdapter);
var _nfcAdapter = NfcAdapter.getDefaultAdapter(main);
// console.log(_nfcAdapter);
var ndef = new IntentFilter('android.nfc.action.NDEF_DISCOVERED'); //NfcAdapter.ACTION_NDEF_DISCOVERED
// console.log(ndef);
var tag = new IntentFilter('android.nfc.action.TAG_DISCOVERED'); //NfcAdapter.ACTION_TECH_DISCOVERED
// console.log(tag);
var tech = new IntentFilter('android.nfc.action.TECH_DISCOVERED');
// console.log(tech);
var intentFiltersArray = [ndef, tag, tech];
var techListsArray = [
['android.nfc.tech.Ndef'],
['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.MifareClassi'],
['android.nfc.tech.MifareUltralight']
];
var _intent = new Intent(main, main.getClass());
// console.log(_intent);
_intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
var pendingIntent = PendingIntent.getActivity(main, 0, _intent, 0);
// console.log(pendingIntent);
if (_nfcAdapter == null) {
} else if (_nfcAdapter.isEnabled() == false) {
} else {
_nfcAdapter.enableForegroundDispatch(main, pendingIntent, IntentFilter, techListsArray);
}
} catch (e) {
//TODO handle the exception
}
},
NFCReadUID() {
var main = plus.android.runtimeMainActivity();
var _intent = main.getIntent();
var _action = _intent.getAction();
// console.log("action type:" + _action);
if (NfcAdapter.ACTION_NDEF_DISCOVERED == _action || NfcAdapter.ACTION_TAG_DISCOVERED == _action || NfcAdapter.ACTION_TECH_DISCOVERED == _action) {
var Tag = plus.android.importClass('android.nfc.Tag');
var tagFromIntent = _intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
var bind_code = _intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
bind_code = this.Bytes2HexString(bind_code);
console.log("bind_code====:",bind_code)
if (bind_code) {
// // 标签没有被绑定进行绑定
this.dataList = this.$store.state[this.keyCache];
console.log('this.dataList=========', JSON.stringify(this.dataList));
if (
this.dataList.every(item => {
return item.bind_code !== bind_code;
})
) {
this.formData.bind_code = bind_code;
// this.fromData.old==true;
if (this.eventName) {
this.$EventBus.$emit(this.eventName, JSON.stringify(this.formData));
}
setTimeout(() => {
uni.navigateBack();
}, 1500);
} else {
this.$util
.confirm({
title: '提示',
showCancel: false,
content: '该标签已经被绑定，请换一个！'
})
.then(res => {
if (res) {
setTimeout(() => {
uni.navigateBack();
}, 1000);
}
});
}
}
//console.log(this.UID);
}
},
//将byte[] 转为Hex，
Bytes2HexString(arrBytes) {
var str = '';
for (var i = 0; i < arrBytes.length; i++) {
var tmp;
var num = arrBytes[i];
if (num < 0) {
//Java中数值是以补码的形式存在的，应用程序展示的十进制是补码对应真值。补码的存在主要为了简化计算机底层的运算，将减法运算直接当加法来做
tmp = (255 + num + 1).toString(16);
} else {
tmp = num.toString(16);
}
if (tmp.length == 1) {
tmp = '0' + tmp;
}
str += tmp;
}
return str;
}
}
};
</script>
} else {
tmp = num.toString(16);
}
if (tmp.length == 1) {
tmp = '0' + tmp;
}
str += tmp;
}
return str;
}
}
};