Android NFC开发MifareClassic读写Demo实例下载

本例子是一个NFC读卡信息的例子源码、NFC技术由非接触式射频识别（RFID）演变而来、由飞利浦半导体（现恩智浦半导体）、诺基亚和索尼共同研制开发、其基础是RFID及互连技术、近场通信（Near Field Communication,NFC）是一种短距高频的无线电技术、在13.56MHz频率运行于20厘米距离内、其传输速度有106 Kbit/秒、212 Kbit/秒或者424 Kbit/秒三种、目前近场通信已通过成为ISO/IEC IS 18092国际标准、ECMA-340标准与ETSI TS 102 190标准、NFC采用主动和被动两种读取模

本项目默认编码GBK编译版本4.4.2、运行需要有NFC硬件支持、最近一直在研究Android NFC相关的技术、发现有两种数据格式、MifareClassic和MifareUltralight两种、不巧的是公司用的是MifareUltralight、一直没有研究出来、Android官方的文档也看过、跟文档来也没有弄出来、还是研究当中、这里先分享已经研究出来的成果、MifareClassic数据格式

AndroidManifest.xml 代码

<intent-filter>  
	<action android:name="android.nfc.action.TECH_DISCOVERED" />  
</intent-filter>  
<meta-data  
	android:name="android.nfc.action.TECH_DISCOVERED"  
	android:resource="@xml/nfc_tech_filter" />  

nfc_tech_filter.xml 代码

<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
    <tech-list>
       <tech>android.nfc.tech.MifareClassic</tech>
    </tech-list>
</resources>

核心代码

private void processIntent(Intent intent) {  
	//取出封装在intent中的TAG  
	Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);  
	for (String tech : tagFromIntent.getTechList()) {  
	  //  System.out.println(tech);  
	}  
	boolean auth = false;  
	//读取TAG  
	MifareClassic mfc = MifareClassic.get(tagFromIntent);  
	try {  
		String metaInfo = "";  
		//Enable I/O operations to the tag from this TagTechnology object.  
		mfc.connect();  
		int type = mfc.getType();//获取TAG的类型  
		int sectorCount = mfc.getSectorCount();//获取TAG中包含的扇区数  
		String typeS = "";  
		switch (type) {  
		case MifareClassic.TYPE_CLASSIC:  
			typeS = "TYPE_CLASSIC";  
			break;  
		case MifareClassic.TYPE_PLUS:  
			typeS = "TYPE_PLUS";  
			break;  
		case MifareClassic.TYPE_PRO:  
			typeS = "TYPE_PRO";  
			break;  
		case MifareClassic.TYPE_UNKNOWN:  
			typeS = "TYPE_UNKNOWN";  
			break;  
		}  
		metaInfo  = "卡片类型："   typeS   "共"   sectorCount 
			  "个扇区共"   mfc.getBlockCount() 
			  "个块存储空间: "   mfc.getSize()   "B";  
		for (int j = 0; j < sectorCount; j  ) {  
			//Authenticate a sector with key A.  
			auth = mfc.authenticateSectorWithKeyA(j, a);
			int bCount;  
			int bIndex;  
			if (auth) {  
				metaInfo  = "Sector "   j   ":验证成功";  
				// 读取扇区中的块  
				bCount = mfc.getBlockCountInSector(j);  
				bIndex = mfc.sectorToBlock(j);  
				for (int i = 0; i < bCount; i  ) {  
					byte[] data = mfc.readBlock(bIndex);  
					metaInfo  = "Block "   bIndex   " : "  
							  bytesToHexString(data)   "";  
					bIndex  ;  
				}  
			} else {  
				metaInfo  = "Sector "   j   ":验证失败";  
			}  
		}  
		promt.setText(metaInfo);  
	} catch (Exception e) {  
		e.printStackTrace();  
	}  
}  

话不多说、直接上源代码、源代码里面只有一个类、非常容易看懂的、另外如果有哥们研究出来了MifareUltralight、还希望一起分享一下

源代码下载链接: http://dwtedx.com/download.html?bdkey=s/1pJOJ075 密码: 2zjg