1，uniapp功能之NFC

　　在 根目录的static中新建nfc.js文件
　　nfc.js var NfcAdapter; export default { 	// 初始化NFC 	NFCInit() { 		try { 			let main2 = 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 IntentFilter2 = plus.android.importClass(＂android.content.IntentFilter＂); 			NfcAdapter = plus.android.importClass(＂android.nfc.NfcAdapter＂); 			let _nfcAdapter = NfcAdapter.getDefaultAdapter(main2); 			let ndef = new IntentFilter2(＂android.nfc.action.NDEF_DISCOVERED＂); 			let tag = new IntentFilter2(＂android.nfc.action.TAG_DISCOVERED＂); 			let tech = new IntentFilter2(＂android.nfc.action.TECH_DISCOVERED＂); 			let intentFiltersArray = [ndef, tag, tech]; 			let 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＂] 			]; 			let _intent = new Intent(main2, main2.getClass()); 			_intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); 			let pendingIntent = PendingIntent.getActivity(main2, 0, _intent, 0); 			if (_nfcAdapter == null) {} else if (_nfcAdapter.isEnabled() == false) {} else { 				_nfcAdapter.enableForegroundDispatch(main2, pendingIntent, IntentFilter2, techListsArray); 			} 		} catch (e) {} 	}, 	// 读取NFC上的数据 	NFCReadUID() { 		let main3 = plus.android.runtimeMainActivity(); 		let _intent = main3.getIntent(); 		let _action = _intent.getAction(); 		if (NfcAdapter.ACTION_NDEF_DISCOVERED == _action || NfcAdapter.ACTION_TAG_DISCOVERED == _action || 			NfcAdapter.ACTION_TECH_DISCOVERED == _action) { 			let Tag = plus.android.importClass(＂android.nfc.Tag＂); 			let tagFromIntent = _intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); 			let bind_code = _intent.getByteArrayExtra(NfcAdapter.EXTRA_ID); 			bind_code = this.byteArrayToHexString(bind_code); 			uni.$emit(＂nfcCode＂, { 				code: bind_code 			}) 		} 	}, 	// 将转大写格式 	byteArrayToHexString(inarray) { 		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) { 			inn = inarray[j] & 0xff; 			i = (inn >>> 4) & 0x0f; 			out += hex[i]; 			i = inn & 0x0f; 			out += hex[i]; 		} 		return out; 	}, }
　　在需要的页面里面引入这个js
　　没了，结束了，是不是很简单呐，如有问题，欢迎留言。
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