NFCManager.java
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package com.huaheng.mes.nfc;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentFilter.MalformedMimeTypeException;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.IsoDep;
import android.nfc.tech.MifareClassic;
import android.nfc.tech.Ndef;
import android.nfc.tech.NfcA;
import android.nfc.tech.NfcB;
import android.nfc.tech.NfcF;
import android.nfc.tech.NfcV;
import android.os.Build;
import android.util.Log;
import java.io.IOException;
public class NFCManager {
private static NFCManager instance;
private NfcAdapter nfcAdapter;
private PendingIntent mPendingIntent;
private IntentFilter[] mFilters;
private String[][] mTechLists;
// 是否是NFC请求
private boolean isNfcRequest = false;
private NFCListener mNFCListener;
private Activity mActivity;
private IsoDep na;
private NFCManager() {
}
public static NFCManager getInstance() {
if (instance == null)
instance = new NFCManager();
return instance;
}
@SuppressLint("NewApi")
public void init(Context context) {
if (Build.VERSION.SDK_INT < 10) {
return;
}
try {
nfcAdapter = NfcAdapter.getDefaultAdapter(context);
} catch (Exception e1) {
e1.printStackTrace();
nfcAdapter = null;
return;
}
// 判断2
if (nfcAdapter == null) {
// 如果手机不支持NFC，或者NFC没有打开就直接返回
Log.d(this.getClass().getName(), "手机不支持NFC功能！");
return;
}
// 三种Activity NDEF_DISCOVERED ,TECH_DISCOVERED,TAG_DISCOVERED
// 指明的先后顺序非常重要， 当Android设备检测到有NFC Tag靠近时，会根据Action申明的顺序给对应的Activity
// 发送含NFC消息的 Intent.
IntentFilter ndef = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
IntentFilter tech = new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);
IntentFilter tag = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
try {
ndef.addDataType("*/*");
} catch (MalformedMimeTypeException e) {
throw new RuntimeException("fail", e);
}
mFilters = new IntentFilter[] { ndef, tech, tag };
mTechLists = new String[][] { new String[] { Ndef.class.getName(), MifareClassic.class.getName(),
NfcA.class.getName(),NfcB.class.getName(),NfcV.class.getName(),NfcF.class.getName() } };
if (!nfcAdapter.isEnabled()) {
Log.d(this.getClass().getName(), "手机NFC功能没有打开！");
enableDialog(context);
return;
}
}
private void enableDialog(final Context context) {
AlertDialog.Builder ab = new AlertDialog.Builder(context);
ab.setTitle("提醒");
ab.setMessage("手机NFC开关未打开，是否现在去打开？");
ab.setNeutralButton("否", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
ab.setNegativeButton("是", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
context.startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));
dialog.dismiss();
}
});
ab.create().show();
}
@SuppressLint("NewApi")
public void onPause(Activity activity) {
if (nfcAdapter != null) {
nfcAdapter.disableForegroundDispatch(activity);
}
mActivity = null;
}
@SuppressLint("NewApi")
public void onResume(Activity activity) {
if (nfcAdapter != null) {
if (mActivity == null) {
mActivity = activity;
mPendingIntent = PendingIntent.getActivity(mActivity, 0,
new Intent(mActivity, mActivity.getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
nfcAdapter.enableForegroundDispatch(activity, mPendingIntent, mFilters, mTechLists);
} else {
if (!mActivity.getClass().equals(activity.getClass())) {
mActivity = activity;
mPendingIntent = PendingIntent.getActivity(mActivity, 0,
new Intent(mActivity, mActivity.getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
nfcAdapter.enableForegroundDispatch(activity, mPendingIntent, mFilters, mTechLists);
}
}
}
}
public boolean isEnabled() {
return nfcAdapter != null && nfcAdapter.isEnabled();
}
/**
* 处理cup NFC卡
* @param intent
* @throws IOException
*/
@SuppressLint("NewApi")
public void procNFCIntent(Intent intent) throws IOException {
if (isEnabled()) {
Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
try {
na = IsoDep.get(tag);
// na.setTimeout(5000);
na.connect();
}catch (Exception e) {
e.printStackTrace();
mNFCListener.onError("标准NFC卡，卡ID："+HEX.bytesToHex(tag.getId()));
}
}else{
if (mNFCListener != null) {
mNFCListener.onError("NFC不可用");
}
}
}
public void clearNFCParams() {
isNfcRequest = false;
}
public boolean isNFCReq() {
return isNfcRequest;
}
public void setNFCListener(NFCListener ls) {
mNFCListener = ls;
}
public interface NFCListener {
public void onReciveDataOffline(byte[] id);
public void onError(String error);
}
}