解析NFC卡片数据:实现NfcCard类来封装NFC卡片的读写操作。 publicclassNfcCard{privatestaticfinalStringTAG="NfcCard";privateTagtag;publicstaticNfcCardget(Tagtag){returnnewNfcCard(tag);}privateNfcCard(Tagtag){this.tag=tag;}publicvoidwriteData(Stringdata){// 写入数据到NFC卡片...}} 1. 2. 3. 4. ...
String card_info = String.format("卡片的序列号为: %s", ByteArrayToHexString(ids)); String result = readGuardCard(tag); card_info = String.format("%s\n详细信息如下:\n%s", card_info, result); tv_nfc_result.setText(card_info); } } // 读取小区门禁卡信息 public String readGuardCard(T...
LifecycleObserver,OnResume,OnPause{publicstaticfinal StringKEY_TOGGLE_NFC="toggle_nfc";publicstaticfinal StringKEY_ANDROID_BEAM_SETTINGS="android_beam_settings";privateNfcEnabler mNfcEnabler;privateNfcAdapter mNfcAdapter;...@OverridepublicvoiddisplayPreference(PreferenceScreen screen){if(!isAvailable()){...
com.gsma.services.nfc \ com.android.nfc_extras PRODUCT_COPY_FILES+=\ frameworks/native/data/etc/com.nxp.mifare.xml:system/etc/permissions/com.nxp.mifare.xml \ frameworks/native/data/etc/android.hardware.nfc.xml:system/etc/permissions/android.hardware.nfc.xml \ frameworks/native/data/etc/com.an...
NFC Card Emulation模式:简称CE,它能把携带NFC功能的设备模拟成Smart Card,这样就能实现诸如手机支付、门禁卡之类的功能。 1.2NFC R/W运行模式 左边的只能终端扮演了NFC Reader角色 在R/W模式中,交互操作的发起方只能是NFC Reader,因此它也称为Initiator或Active Device ...
publicclassCardInfo{}publicclassReadCardInfoextendsCardInfo{}publicvoidsomeMethod(CardInfoinfo){if(infoinstanceofReadCardInfo){//是否是ReadCardInfo的实例}} 手机访问网络权限 出现java.net.SocketException: socket failed: EACCES (Permission denied)抱错时,AndroidManifest.xml中: ...
(NfcAdapter.EXTRA_TAG);StringCardId=ByteArrayToHexString(tagFromIntent.getId());}publicstaticvoidstartActivity(Contextcontext){Intentintent=newIntent();intent.setClass(context,WorkActivity.class);context.startActivity(intent);}privateStringByteArrayToHexString(byte[]inarray){inti,j,in;String[]hex={"0...
NFC设备有三种工作模式:Tag Reader/Writer、Peer to Peer、Card Emulation模式,详情可参见NFC Forum的介绍。现在很多安卓手机都具有NFC芯片,安卓系统也从Android 4.4开始原生提供了NFC卡片模拟的实现,即HCE。但是Android系统提供的卡模拟API是工作在国际智能卡标准ISO 7816-4下,同时Android也明确指出了使用ISO/IEC 14443...
[] messages) { for (NdefMessage message : messages) { for (NdefRecord record : message.getRecords()) { byte[] payload = record.getPayload(); String cardNumber = new String(payload, StandardCharsets.UTF_8).trim(); // 处理卡号 Log.d("NFCReader", "Card Number: " + cardNumber); }...
()}privatefuninitNfc(){mNfcAdapter=M1CardUtils.isNfcAble(this)pIntent=PendingIntent.getActivity(this,0,//在Manifest里或者这里设置当前activity启动模式,否则每次响应NFC事件,activity会重复创建Intent(this,javaClass).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP),0)}overridefunonResume(){super.onResume()mNfc...