前段时间因为项目需要使用Android实现了nfc芯片的读取工作，现跟大家分享一下：
nfc_reader.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#fff"> <RelativeLayout android:layout_width="fill_parent" android:layout_height="40dip" android:background="@drawable/title_bk"> <ImageButton android:id="@+id/btn_back" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/btn_back_selector" android:src="@drawable/btn_back" /> <View android:id="@+id/line0" android:layout_width="1px" android:layout_height="fill_parent" android:layout_toRightOf="@id/btn_back" android:background="#444444" /> <View android:layout_width="1px" android:layout_height="fill_parent" android:layout_toRightOf="@id/line0" android:background="#444444" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="NFC卡扫描" android:textColor="#FFFFFF" android:textSize="20sp" /> </RelativeLayout><!-- <com.ant.liao.GifView android:id="@+id/nfcGif" --><!-- android:paddingTop="20dp" android:layout_height="wrap_content" --><!-- android:layout_width="wrap_content" android:layout_gravity="center" --><!-- android:enabled="false" /> --> <TextView android:layout_height="match_parent" android:gravity="center" android:layout_gravity="center" android:layout_width="match_parent" android:paddingTop="50dp" android:text="请将手机背面贴近标签进行识别" /></LinearLayout>
NfcActivity.java
package com.yzlt.wxaj;import android.app.Activity;import android.app.PendingIntent;import android.content.Intent;import android.nfc.NfcAdapter;import android.os.Bundle;import android.view.View;import android.widget.ImageButton;import com.ant.liao.GifView;public class NfcActivity extends Activity{ public static NfcActivity instance = null; private PendingIntent mPendingIntent; NfcAdapter nfcAdapter; private ImageButton imageButton; @Override public void onCreate(Bundle paramBundle) { super.onCreate(paramBundle); setContentView(R.layout.nfc_reader); imageButton = (ImageButton) this.findViewById(R.id.btn_back); imageButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { finish(); } }); // 从xml中得到GifView的句柄// GifView gf1 = (GifView) this.findViewById(R.id.nfcGif); // 设置Gif图片源// gf1.setGifImage(R.drawable.nfc); instance = this; initNfcAdapter(); } @Override protected void onNewIntent(Intent paramIntent) { String str = getRFID(paramIntent); Intent localIntent = new Intent(this, MainActivity.class); localIntent.putExtra("nfcCode", str); setResult(RESULT_OK, localIntent); finish(); } @Override public void onPause() { super.onPause(); if (this.nfcAdapter != null) { this.nfcAdapter.disableForegroundDispatch(this); } } @Override public void onResume() { super.onResume(); if (this.nfcAdapter != null) { this.nfcAdapter.enableForegroundDispatch(this, this.mPendingIntent, null, null); } } private long getDec(byte[] paramArrayOfByte) { long l1 = 0L; long l2 = 1L; for (int i = 0;; i++) { if (i >= paramArrayOfByte.length) return l1; l1 += l2 * (0xFF & paramArrayOfByte[i]); l2 *= 256L; } } public String getRFID(Intent paramIntent) { paramIntent.getAction(); String str = String.valueOf(getDec(paramIntent.getByteArrayExtra("android.nfc.extra.ID"))); return str; } public boolean initNfcAdapter() { try { this.nfcAdapter = NfcAdapter.getDefaultAdapter(this); this.mPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, getClass()).addFlags(536870912), 0); return false; } catch (Exception e) { e.printStackTrace(); } return true; }}MainActivity.java
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // 直接调finish()方法，resultCode就是0 if (resultCode != RESULT_OK) { return; } switch (requestCode) { case NFC: JavaScriptObject.nfcCode = data.getStringExtra("nfcCode"); h.post(new Runnable() { public void run() { // 调用js中的setBarCode方法 browser.loadUrl("javascript:setNfcCode('" + JavaScriptObject.nfcCode + "')"); } }); break; case CAMERA: new PhotoTask().execute(WEB_URL, this.imageFilePath.getPath()); String filePath = this.imageFilePath.getPath(); JavaScriptObject.fileName = filePath.substring(filePath.lastIndexOf("/") + 1, filePath.length()); h.post(new Runnable() { public void run() { // 调用js中的setBarCode方法 browser.loadUrl("javascript:setCameraFileName('" + JavaScriptObject.fileName + "','" + JavaScriptObject.camera_type + "')"); } }); break; case BAR_CODE: Bundle bundle = data.getExtras(); // 显示扫描到的内容 JavaScriptObject.barCode = bundle.getString("barCode"); h.post(new Runnable() { public void run() { // 调用js中的setBarCode方法 browser.loadUrl("javascript:setBarCode('" + JavaScriptObject.barCode + "')"); } }); break; } }