高通 Android 12 调试产测NFC功能

1、在dev/nxpnfc节点添加对应的文件权限


on property:sys.boot_completed=1
   
	# nfc add by zm
    chmod 777 /dev/nxpnfc

2、在vendor/nxp/nfcdevice-nfc.mk文件中修改NFC添加到编译路径如下所示,跟平时内置apk方式有点类似

PRODUCT_PACKAGES += NFCTestApp

-include \vendor\nxp\nfc\FactoryTestApp\Android.mk

3、然后执行make命令这时候就会在out目录下面system/bin目录生成 NFCTestApp可执行文件

4、产测中执行shell命令代码如下

val nfcShell = Shell.exe("/system/bin/NFCTestApp")
if(nfcShell.contains("xxx"){
  requireActivity().runOnUiThread(Runnable {
                    textView!!.text = "识别NFC成功"
                })

}

5、其他原生识别NFC的方式

6、Android原生识别NFC

package com.example.nfctest;

import androidx.appcompat.app.AppCompatActivity;

import android.nfc.tech.Ndef;
import android.os.Bundle;

import android.app.PendingIntent;
import android.content.Intent;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

public class MainActivity extends AppCompatActivity {
    private NfcAdapter nfcAdapter;
    private PendingIntent pendingIntent;
    private TextView tvUid;
    String datas;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tvUid = (TextView) findViewById(R.id.tv_uid);
        nfcAdapter = NfcAdapter.getDefaultAdapter(this);
        /*pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this,
                getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);*/
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S) {
              mPendingPollIntent = PendingIntent.getBroadcast(mContext, POLL_REQUEST, pollIntent, PendingIntent.FLAG_IMMUTABLE);
           }else{
                mPendingPollIntent = PendingIntent.getBroadcast(mContext, POLL_REQUEST, pollIntent, 0);
           } 

        if (nfcAdapter == null) {
            Toast.makeText(MainActivity.this,"设备不支持NFC",Toast.LENGTH_LONG).show();
            return;
        }
        if (nfcAdapter != null && !nfcAdapter.isEnabled()) {
            Toast.makeText(MainActivity.this, "请在系统设置中先启用NFC功能", Toast.LENGTH_LONG).show();
            return;
        }
        //onNewIntent(getIntent());
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        resolveIntent(intent);
       // resolveIntent(intent);
    }

//    void resolveIntent(Intent intent) {
//        Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
//        if (tag != null) {
//            processTag(intent);
//        }
//    }

    public void processTag(Intent intent) {//处理tag
        String uid = "";
        Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
        byte[] aa = tagFromIntent.getId();
        uid += bytesToHexString(aa);//获取卡的UID
        Log.e("processTag","uid="+uid);
        tvUid.setText(uid);
    }

//    //字符序列转换为16进制字符串
//    private String bytesToHexString(byte[] src) {
//        StringBuilder stringBuilder = new StringBuilder("0x");
//        if (src == null || src.length <= 0) {
//            return null;
//        }
//        char[] buffer = new char[2];
//        for (int i = 0; i < src.length; i++) {
//            buffer[0] = Character.forDigit((src[i] >>> 4) & 0x0F, 16);
//            buffer[1] = Character.forDigit(src[i] & 0x0F, 16);
//            stringBuilder.append(buffer);
//        }
//        return stringBuilder.toString();
//    }
    /**
     * 数组转换成十六进制字符串
     *
     * @param bArray
     * @return
     */
    public static String bytesToHexString(byte[] bArray) {
        StringBuffer sb = new StringBuffer(bArray.length);
        String sTemp;
        for (int i = 0; i < bArray.length; i++) {
            sTemp = Integer.toHexString(0xFF & bArray[i]);
            if (sTemp.length() < 2)
                sb.append(0);
            sb.append(sTemp.toUpperCase());
        }
        return sb.toString();
    }


    @Override
    protected void onPause() {
        super.onPause();
        if (nfcAdapter != null)
            nfcAdapter.disableForegroundDispatch(this);
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (!this.nfcAdapter.isEnabled()) {
            Toast.makeText(this,"请在系统设置中先启用NFC功能",Toast.LENGTH_SHORT).show();
        }
        if (nfcAdapter != null)
            nfcAdapter.enableForegroundDispatch(this, pendingIntent,
                    null, null);
    }
    protected void resolveIntent(Intent intent) {

        // 得到是否检测到TAG触发
        if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(intent.getAction())
                || NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())
                || NfcAdapter.ACTION_NDEF_DISCOVERED.equals(intent.getAction())) {
            // 处理该intent
            Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

            // 获取标签id数组
            byte[] bytesId = tag.getId();

            //获取消息内容
            NfcMessageParser nfcMessageParser = new NfcMessageParser(intent);
            List<String> tagMessage = nfcMessageParser.getTagMessage();

            if (tagMessage == null || tagMessage.size() == 0) {

                //Toast.makeText(this, "NFC格式不支持...", Toast.LENGTH_LONG).show();
            } else {
                for (int i = 0; i < tagMessage.size(); i++) {
                    Log.e("tag", tagMessage.get(i));
                }
                datas = tagMessage.get(0);
            }
            String info = "";
            if (datas != null) {
                info += "内容：" + datas + "\n卡片ID：" + bytesToHexString(bytesId) + "\n";
            } else {
                info += "卡片ID：" + bytesToHexString(bytesId) + "\n";
            }


            String[] techList = tag.getTechList();

            //分析NFC卡的类型： Mifare Classic/UltraLight Info
            String cardType = "";


            for (String aTechList : techList) {
                if (TextUtils.equals(aTechList, "android.nfc.tech.Ndef")) {
                    Ndef ndef = Ndef.get(tag);
                    cardType += "最大数据尺寸:" + ndef.getMaxSize() + "字节";
                }
            }

            info += cardType;

            tvUid.setText("NFC信息如下：\n" + info);


        }
    }


}

7、NFC解析数据类

package com.example.nfctest;

import android.content.Intent;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.os.Parcelable;

import java.util.ArrayList;
import java.util.List;

/**
 * 类名 NfcMessageParser
 * 作者 dy
 * 功能
 * 创建日期 2017/3/14 15:54
 * 修改日期 2017/3/14 15:54
 */


public class NfcMessageParser {

    private Intent tagIntent;
    private String TAG = "NfcMessageParser";

    public NfcMessageParser() {

    }

    public NfcMessageParser(Intent intent) {
        this.tagIntent = intent;
    }

    // 解析NFC信息，
    public List<String> getTagMessage() {
        if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(tagIntent.getAction())) {
            NdefMessage[] msgs = getTagNdef(tagIntent);
            List<String> ndefList = getNdefString(msgs);

            if (ndefList != null && ndefList.size() != 0) {
                return ndefList;
            }
        }
        return null;
    }


    // 得到Intent中的NDEF数据
    private NdefMessage[] getTagNdef(Intent intent) {
        // TODO Auto-generated method stub
        NdefMessage[] msgs = null;
        Parcelable[] rawMsgs = intent
                .getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);

        //把序列化数据转成Messaeg对象
        if (rawMsgs != null) {
            msgs = new NdefMessage[rawMsgs.length];
            for (int i = 0; i < rawMsgs.length; i++) {
                msgs[i] = (NdefMessage) rawMsgs[i];
            }
        } else {
            // Unknown tag type
            byte[] empty = new byte[]{};
            NdefRecord record = new NdefRecord(NdefRecord.TNF_UNKNOWN, empty,
                    empty, empty);
            NdefMessage msg = new NdefMessage(new NdefRecord[]{record});
            msgs = new NdefMessage[]{msg};
        }
        return msgs;
    }

    // 把Message转成List
    private List<String> getNdefString(NdefMessage[] msgs) {
        // TODO Auto-generated method stub
        if (msgs != null && msgs.length != 0) {
            List<String> tagMessage = parser(msgs[0]);
            return tagMessage;
        }
        return null;
    }

    // 把NDEF中的信息系转化为Record，并最终转化为String
    private List<String> parser(NdefMessage ndefMessage) {
        // TODO Auto-generated method stub
        NdefRecord[] records = ndefMessage.getRecords();
        List<String> elements = new ArrayList<>();
        for (NdefRecord ndefRecord : records) {
            if (!TextRecord.isText(ndefRecord)) {
                return null;
            }
            elements.add(TextRecord.parse(ndefRecord));
        }
        return elements;
    }

    // 字符序列转换为16进制字符串
    private String bytesToHexString(byte[] src) {
        return bytesToHexString(src, true);
    }

    private String bytesToHexString(byte[] src, boolean isPrefix) {
        StringBuilder stringBuilder = new StringBuilder();
        if (isPrefix) {
            stringBuilder.append("0x");
        }
        if (src == null || src.length <= 0) {
            return null;
        }
        char[] buffer = new char[2];
        for (int i = 0; i < src.length; i++) {
            buffer[0] = Character.toUpperCase(Character.forDigit(
                    (src[i] >>> 4) & 0x0F, 16));
            buffer[1] = Character.toUpperCase(Character.forDigit(src[i] & 0x0F,
                    16));
            System.out.println(buffer);
            stringBuilder.append(buffer);
        }
        return stringBuilder.toString();
    }

}

8、在xml中添加nfc_tech_filter.xml文件内容如下

、在AndroidManifest.xml中添加以下权限以及NFC TAG标签

    <uses-permission android:name="android.permission.NFC" />
    <uses-feature android:name="android.hardware.nfc" android:required="true"/>




             <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" />
            <intent-filter>
                <action android:name="android.nfc.action.TAG_DISCOVERED" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>

9、然后在手机界面打开NFC开关，不知道怎么打开或者手机设置搜索NFC哈，说明NFC功能正常了。

10、总结：

1、不管是上面二种那种方式第一种如果使用这种.c执行shell脚本记得将系统nfc功能开关关闭否则会冲突不生效哈

2、第二种系统原生nfc 需要注意Android10以后PendingIntent类型发生变化，否则会报错提示。Android12以上PendingIntent需要强制增加FLAG_IMMUTABLE或FLAG_MUTABLE

3、调试的时候可以多拿几种不同NFC卡进行调试。

到这里所有NFC调试流程基本结束了，转载请注明出处高通 Android 12 调试产测NFC功能_KdanMin的博客-CSDN博客。谢谢！

高通 Android 12 调试产测NFC功能

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