Initial release

BoardConfigNfc.mk

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+# Copyright 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_STEM := nfc/BoardConfigNfcPartial.mk
+
+#BOARD_KERNEL_CMDLINE += androidboot.selinux=permissive
+
+DEVICE_MANIFEST_FILE += vendor/nxp/nfc/manifest.xml
+
+-include vendor/nxp/$(LOCAL_STEM)

T4TDemo/Android.mk

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+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := optional
+
+# Only compile source java files in this apk.
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+LOCAL_PACKAGE_NAME := T4TDemo
+LOCAL_PRIVATE_PLATFORM_APIS := true
+LOCAL_CERTIFICATE := platform
+LOCAL_USES_LIBRARIES := com.nxp.nfc
+LOCAL_JAVA_LIBRARIES := com.nxp.nfc
+LOCAL_STATIC_JAVA_LIBRARIES += android-support-v7-appcompat
+
+include $(BUILD_PACKAGE)

T4TDemo/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.nxp.t4tdemo"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+   <uses-sdk
+        android:minSdkVersion="29"
+        android:targetSdkVersion="29" />
+    <uses-permission android:name="android.permission.NFC"></uses-permission>
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name" >
+        <activity
+            android:label="@string/app_name"
+            android:name="com.nxp.t4tdemo.T4tActivity" >
+            <intent-filter >
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <uses-library android:name="com.nxp.nfc"
+            android:required="true"/>
+    </application>
+
+</manifest>

T4TDemo/res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    >
+
+    <LinearLayout
+        android:layout_width="500dip"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal|clip_horizontal"
+        android:orientation="vertical" >
+
+        <TextView
+            android:layout_marginLeft="10dp"
+            android:layout_marginBottom="10dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Status:"
+            android:textSize="16sp"
+            android:layout_gravity="left" />
+
+        <TextView
+            android:id="@+id/txt_status"
+            android:layout_marginLeft="10dp"
+            android:layout_marginBottom="10dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textSize="16sp"
+            android:layout_gravity="left" />
+
+
+        <TextView
+            android:layout_marginLeft="10dp"
+            android:layout_marginBottom="10dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Note: This demo app only supports RTD_TXT type"
+            android:textSize="12sp"
+            android:layout_gravity="left" />
+
+         <EditText
+            android:id="@+id/edt_content"
+            android:layout_marginLeft="10dp"
+            android:layout_marginBottom="10dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@android:color/darker_gray"
+            android:textColor="@android:color/black"
+            android:inputType="textMultiLine"
+            android:lines="8"
+            android:minLines="6"
+            android:gravity="top|left"
+            android:maxLines="10"
+            android:hint="Please enter text to write" />
+
+
+        <LinearLayout
+            android:layout_marginLeft="10dp"
+            android:layout_marginBottom="10dp"
+            android:layout_width="300dip"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal" >
+
+            <Button
+                android:id="@+id/btn_write"
+                android:layout_width="100dip"
+                android:layout_height="wrap_content"
+                android:gravity="center_vertical|center_horizontal"
+                android:text="T4T Write" />
+
+            <Button
+                android:id="@+id/btn_read"
+                android:layout_width="100dip"
+                android:layout_height="wrap_content"
+                android:gravity="center_vertical|center_horizontal"
+                android:text="T4T Read" />
+
+            <Button
+                android:id="@+id/btn_reset"
+                android:layout_width="100dip"
+                android:layout_height="wrap_content"
+                android:gravity="center_vertical|center_horizontal"
+                android:text="reset" />
+
+            </LinearLayout>
+
+    </LinearLayout>
+
+
+    <ImageView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginRight="10dp"
+        android:layout_marginBottom="10dp"
+        android:src="@drawable/nxp_logo"
+        android:layout_gravity="bottom|right"
+        />
+
+</FrameLayout>

T4TDemo/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">T4T Demo</string>
+
+</resources>

T4TDemo/src/com/nxp/t4tdemo/T4TFromNfccReaderWriter.java

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+/*
+*                    Copyright 2021 NXP
+*
+*         All rights are reserved. Reproduction in whole or in part is
+*        prohibited without the written consent of the copyright owner.
+*    NXP reserves the right to make changes without notice at any time.
+*   NXP makes no warranty, expressed, implied or statutory, including but
+*   not limited to any implied warranty of merchantability or fitness for any
+*  particular purpose, or that the use will not infringe any third party patent,
+*   copyright or trademark. NXP must not be liable for any loss or damage
+*                            arising from its use.
+*
+*/
+
+package com.nxp.t4tdemo;
+
+import android.app.Activity;
+import android.content.Context;
+import android.nfc.NfcAdapter;
+import android.nfc.FormatException;
+import com.nxp.nfc.NxpNfcAdapter;
+import com.nxp.t4tdemo.Utils;
+import android.nfc.NdefRecord;
+import android.util.Log;
+import java.util.Arrays;
+import java.io.UnsupportedEncodingException;
+
+public class T4TFromNfccReaderWriter {
+  private static String TAG = "T4TFromNfccReaderWriter";
+
+  private Context mContext;
+  private NfcAdapter mNfcAdapter;
+  private NxpNfcAdapter mNxpNfcAdapter;
+  private OnActionCompleteListener mOnActionCompleteListener;
+
+  public T4TFromNfccReaderWriter(Context cntx) {
+    this.mContext = cntx;
+    this.mNfcAdapter = NfcAdapter.getDefaultAdapter(cntx);
+    this.mNxpNfcAdapter = NxpNfcAdapter.getNxpNfcAdapter(mNfcAdapter);
+    Log.e(TAG, "adapter loaded");
+  }
+
+  public void setActionListener(OnActionCompleteListener onActionCompleteListener){
+    this.mOnActionCompleteListener = onActionCompleteListener;
+  }
+
+  static byte[] hexStringToBytes(String s) {
+    if (s == null || s.length() == 0)
+      return null;
+    int len = s.length();
+    if (len % 2 != 0) {
+      s = '0' + s;
+      len++;
+    }
+    byte[] data = new byte[len / 2];
+    for (int i = 0; i < len; i += 2) {
+      data[i / 2] =
+          (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
+    }
+    return data;
+  }
+
+  public static void printLongAPDU(String str) {
+    if (str.length() > 4000) {
+      Log.i(TAG, "APDU + : " + str.substring(0, 4000));
+      printLongAPDU(str.substring(4000));
+    } else
+      Log.i(TAG, "APDU : " + str);
+  }
+
+  public void writeT4T(String content){
+
+    try{
+      byte[] fileId = { (byte)0xE1, (byte)0x04};
+      final NdefRecord ndefRecord = NdefRecord.createTextRecord("en-us",content);
+      byte[] tbytes = ndefRecord.toByteArray();
+
+      Log.d(TAG, "NdefRecord getByte :" + Utils.toHexString(tbytes, 0, tbytes.length));
+      Thread thrd = new Thread(new Runnable() {
+          @Override
+          public void run() {
+            byte[] bytes = ndefRecord.toByteArray();
+            Log.d(TAG, "NdefRecord getByte :" + Utils.toHexString(bytes, 0, bytes.length));
+            int retValue = mNxpNfcAdapter.doWriteT4tData(fileId, bytes, bytes.length);
+            Log.d(TAG, "T4T NDEF Write API Return Value :" + retValue);
+            String status;
+            if(retValue>=0){
+              status = "T4T Write is success, doWriteT4tData API retunes : "+retValue;
+            }else{
+              status = "T4T Write is failed, doWriteT4tData API retunes : "+retValue;
+            }
+            mOnActionCompleteListener.OnT4tWriteComplete(status);
+          }
+      });
+      thrd.start();
+    }catch(IllegalArgumentException exception){
+      mOnActionCompleteListener.OnT4tWriteComplete("UnsupportedEncodingException");
+    }
+  }
+
+  public void readT4T(){
+
+    byte[] fileId = { (byte)0xE1, (byte)0x04};
+
+    Thread thrd = new Thread(new Runnable() {
+        @Override
+        public void run() {
+          byte[] rData = mNxpNfcAdapter.doReadT4tData(fileId);
+          if (rData != null) {
+            try{
+              NdefRecord record = new NdefRecord(rData);
+              byte[] payloadData = record.getPayload();
+              if(payloadData.length>0 && record.getTnf() == NdefRecord. TNF_WELL_KNOWN && Arrays.equals(NdefRecord.RTD_TEXT,record.getType())){
+                int languageCodeLenth = payloadData[0];
+                byte[] languageCode = new byte[languageCodeLenth];
+                System.arraycopy(payloadData, 1, languageCode, 0, languageCodeLenth);
+                int contentLength = payloadData.length-languageCodeLenth-1;
+                byte[] contentBytes = new byte[contentLength];
+                System.arraycopy(payloadData, languageCodeLenth+1, contentBytes, 0, contentLength);
+                String content = new String(contentBytes,"UTF-8");
+
+                mOnActionCompleteListener.OnT4TReadComplete(content,"Read success");
+                Log.d(TAG, "T4T NDEF Read API Return Value : " + content);
+              }else{
+                mOnActionCompleteListener.OnT4TReadComplete("","Unable to read content");
+                Log.d(TAG, "T4T NDEF Read API unable to read");
+              }
+            } catch(FormatException exception){
+              mOnActionCompleteListener.OnT4tWriteComplete("Failed due to FormatException");
+            } catch(UnsupportedEncodingException exception){
+              mOnActionCompleteListener.OnT4tWriteComplete("Failed due to UnsupportedEncodingException");
+            }
+          }else{
+            byte[] errorCode = {(byte) 0x64, (byte) 0xFF};
+            Log.d(TAG, "T4T NDEF Read API Return Value : " + Utils.toHexString(errorCode, 0, errorCode.length));
+            mOnActionCompleteListener.OnT4TReadComplete("","Read failed");
+          }
+      }
+    });
+    thrd.start();
+  }
+
+  interface OnActionCompleteListener{
+    public void OnT4TReadComplete(String content,String status);
+    public void OnT4tWriteComplete(String status);
+  }
+
+}