146 lines
4.4 KiB
Java
146 lines
4.4 KiB
Java
package com.arpa.hndahesudintocctmsdriver.util;
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import android.app.Activity;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.nfc.FormatException;
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import android.nfc.NdefMessage;
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import android.nfc.NdefRecord;
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import android.nfc.NfcAdapter;
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import android.nfc.NfcManager;
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import android.nfc.Tag;
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import android.nfc.tech.Ndef;
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import android.os.Parcelable;
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import android.provider.Settings;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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/**
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* @author hlh
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* @version 1.0.0
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* @date 2022/2/15 17:04
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* @description:
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*/
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public class NfcUtils {
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//nfc
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public static NfcAdapter mNfcAdapter;
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public static IntentFilter[] mIntentFilter = null;
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public static PendingIntent mPendingIntent = null;
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public static String[][] mTechList = null;
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/**
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* 构造函数，用于初始化nfc
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*/
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public NfcUtils(Activity activity) {
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mNfcAdapter = NfcCheck(activity);
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NfcInit(activity);
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}
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/**
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* 检查NFC是否打开
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*/
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public static NfcAdapter NfcCheck(Activity activity) {
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NfcAdapter mNfcAdapter = NfcAdapter.getDefaultAdapter(activity);
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if (mNfcAdapter == null) {
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return null;
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} else {
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if (!mNfcAdapter.isEnabled()) {
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Intent setNfc = new Intent(Settings.ACTION_NFC_SETTINGS);
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activity.startActivity(setNfc);
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}
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}
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return mNfcAdapter;
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}
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/**
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* 初始化nfc设置
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*/
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public static void NfcInit(Activity activity) {
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mPendingIntent = PendingIntent.getActivity(activity, 0, new Intent(activity, activity.getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
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IntentFilter filter = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
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IntentFilter filter2 = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
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try {
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filter.addDataType("*/*");
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} catch (IntentFilter.MalformedMimeTypeException e) {
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e.printStackTrace();
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}
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mIntentFilter = new IntentFilter[]{filter, filter2};
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mTechList = null;
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}
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/**
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* 读取NFC的数据
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*/
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public static String readNFCFromTag(Intent intent) throws UnsupportedEncodingException {
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Parcelable[] rawArray = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
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if (rawArray != null) {
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NdefMessage mNdefMsg = (NdefMessage) rawArray[0];
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NdefRecord mNdefRecord = mNdefMsg.getRecords()[0];
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if (mNdefRecord != null) {
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String readResult = new String(mNdefRecord.getPayload(), "UTF-8");
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return readResult;
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}
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}
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return "";
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}
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/**
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* 往nfc写入数据
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*/
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public static void writeNFCToTag(String data, Intent intent) throws IOException, FormatException {
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Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
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Ndef ndef = Ndef.get(tag);
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ndef.connect();
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NdefRecord ndefRecord = NdefRecord.createTextRecord(null, data);
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NdefRecord[] records = {ndefRecord};
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NdefMessage ndefMessage = new NdefMessage(records);
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ndef.writeNdefMessage(ndefMessage);
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}
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/**
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* 读取nfcID
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*/
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public static String readNFCId(Intent intent) throws UnsupportedEncodingException {
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Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
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String id = ByteArrayToHexString(tag.getId());
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return id;
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}
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/**
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* 将字节数组转换为字符串
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*/
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private static String ByteArrayToHexString(byte[] inarray) {
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int i, j, in;
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String[] hex = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"};
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String out = "";
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for (j = 0; j < inarray.length; ++j) {
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in = (int) inarray[j] & 0xff;
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i = (in >> 4) & 0x0f;
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out += hex[i];
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i = in & 0x0f;
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out += hex[i];
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}
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return out;
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}
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public static boolean hasNfc(Context context){
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boolean bRet=false;
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if(context==null)
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return bRet;
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NfcManager manager = (NfcManager) context.getSystemService(Context.NFC_SERVICE);
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NfcAdapter adapter = manager.getDefaultAdapter();
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if (adapter != null && adapter.isEnabled()) {
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// adapter存在，能启用
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bRet=true;
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}
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return bRet;
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}
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}
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