diff --git a/app/build.gradle b/app/build.gradle
index 2a82063..2fc06da 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,19 +1,17 @@
plugins {
- alias(libs.plugins.android.application)
+ id 'com.android.application'
}
android {
namespace 'de.androidcrypto.android_hce_beginner_app'
- compileSdk 34
+ compileSdk 34 // Atualizado para Android 14
defaultConfig {
applicationId "de.androidcrypto.android_hce_beginner_app"
- minSdk 21
- targetSdk 34
- versionCode 1
- versionName "1.0"
-
- testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ minSdk 26 // Android 8.0 (compatível com maioria)
+ targetSdk 34 // Atualizado para Android 14 (Obrigatório)
+ versionCode 2
+ versionName "2.0"
}
buildTypes {
@@ -29,12 +27,7 @@ android {
}
dependencies {
-
- implementation libs.appcompat
- implementation libs.material
- implementation libs.activity
- implementation libs.constraintlayout
- testImplementation libs.junit
- androidTestImplementation libs.ext.junit
- androidTestImplementation libs.espresso.core
-}
\ No newline at end of file
+ implementation 'androidx.appcompat:appcompat:1.6.1'
+ implementation 'com.google.android.material:material:1.11.0'
+ implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+}
diff --git a/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MainActivity.java b/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MainActivity.java
index 1373437..e6a5601 100644
--- a/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MainActivity.java
+++ b/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MainActivity.java
@@ -1,69 +1,53 @@
package de.androidcrypto.android_hce_beginner_app;
-import android.content.ComponentName;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.nfc.NfcAdapter;
-import android.nfc.cardemulation.CardEmulation;
-import android.os.Bundle;
-
-import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
-import androidx.fragment.app.Fragment;
-
-import com.google.android.material.bottomnavigation.BottomNavigationView;
-import com.google.android.material.navigation.NavigationBarView;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
+ EditText etTrackData;
+ Button btnGravar;
+ TextView tvStatus;
+
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
- EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);
- /*
- ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
- Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
- v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
- return insets;
- });
- */
-
- BottomNavigationView bottomNav = findViewById(R.id.bottom_navigation);
- //bottomNav.setOnNavigationItemSelectedListener(navListener);
- bottomNav.setOnItemSelectedListener(navListener);
-
- // as soon as the application opens the first
- // fragment should be shown to the user
- // in this case it is algorithm fragment
- getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, new HomeFragment()).commit();
+ // Busca os elementos do layout (que vamos criar no próximo passo)
+ etTrackData = findViewById(R.id.etTrackData);
+ btnGravar = findViewById(R.id.btnGravar);
+ tvStatus = findViewById(R.id.tvStatus);
+
+ // 1. Recuperar track salva anteriormente
+ SharedPreferences prefs = getSharedPreferences("NfcData", MODE_PRIVATE);
+ // Valor padrão de exemplo
+ String savedTrack = prefs.getString("TRACK_DATA", "00A4040007F00102030405069000");
+ etTrackData.setText(savedTrack);
+
+ // 2. Configura o botão de Gravar
+ btnGravar.setOnClickListener(view -> {
+ String newData = etTrackData.getText().toString().trim();
+ if (newData.isEmpty()) {
+ Toast.makeText(this, "A track não pode estar vazia!", Toast.LENGTH_SHORT).show();
+ return;
}
- private final NavigationBarView.OnItemSelectedListener navListener = item -> {
- // By using switch we can easily get
- // the selected fragment
- // by using there id.
- Fragment selectedFragment = null;
- int itemId = item.getItemId();
- if (itemId == R.id.home) {
- selectedFragment = new HomeFragment();
- } else if (itemId == R.id.read) {
- selectedFragment = new ReadFragment();
- } else if (itemId == R.id.write) {
- selectedFragment = new WriteFragment();
- }
-
- // It will help to replace the
- // one fragment to other.
- if (selectedFragment != null) {
- getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, selectedFragment).commit();
- }
- return true;
- };
+ // Salva na memória permanente (SharedPreferences)
+ SharedPreferences.Editor editor = getSharedPreferences("NfcData", MODE_PRIVATE).edit();
+ editor.putString("TRACK_DATA", newData);
+ editor.apply();
-
-}
\ No newline at end of file
+ tvStatus.setText("Track Gravada com Sucesso!\nPronto para aproximar da maquininha.");
+ Toast.makeText(this, "Dados NFC atualizados!", Toast.LENGTH_SHORT).show();
+ });
+
+ // Exibe o status inicial
+ tvStatus.setText("Última Track carregada. Clique em Gravar para confirmar.");
+ }
+}
diff --git a/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MyHostApduServiceSimple.java b/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MyHostApduServiceSimple.java
index 09e16db..042e385 100644
--- a/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MyHostApduServiceSimple.java
+++ b/app/src/main/java/de/androidcrypto/android_hce_beginner_app/MyHostApduServiceSimple.java
@@ -1,190 +1,67 @@
-package de.androidcrypto.android_hce_beginner_app;/*
- * Copyright (C) 2013 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.
- */
+package de.androidcrypto.android_hce_beginner_app;
import android.nfc.cardemulation.HostApduService;
import android.os.Bundle;
+import android.content.SharedPreferences;
import android.util.Log;
-import java.nio.ByteBuffer;
-import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
+// Você precisará de uma classe Utils.java para a conversão de Hex, se ela não existir
+// Por enquanto, vamos assumir que as conversões básicas estão em um arquivo auxiliar.
-public class MyHostApduServiceSimple extends HostApduService {
- private static final String TAG = "HceBeginnerApp";
- // ISO-DEP command HEADER for selecting an AID.
- // Format: [Class | Instruction | Parameter 1 | Parameter 2]
- private static final byte[] SELECT_APPLICATION_APDU = hexStringToByteArray("00a4040006f2233445566700");
- private static final String GET_DATA_APDU_HEADER = "00CA0000";
- private static final String PUT_DATA_APDU_HEADER = "00DA0000";
- // "OK" status word sent in response to SELECT AID command (0x9000)
- private static final byte[] SELECT_OK_SW = hexStringToByteArray("9000");
- // "UNKNOWN" status word sent in response to invalid APDU command (0x0000)
- private static final byte[] UNKNOWN_CMD_SW = hexStringToByteArray("0000");
+public class MyHostApduService extends HostApduService {
- private byte[] fileContent01 = "HCE Beginner App 1".getBytes(StandardCharsets.UTF_8);
- private byte[] fileContent02 = "HCE Beginner App 2".getBytes(StandardCharsets.UTF_8);
- private byte[] fileContentUnknown = "HCE Beginner App Unknown".getBytes(StandardCharsets.UTF_8);
-
- /**
- * Called if the connection to the NFC card is lost, in order to let the application know the
- * cause for the disconnection (either a lost link, or another AID being selected by the
- * reader).
- *
- * @param reason Either DEACTIVATION_LINK_LOSS or DEACTIVATION_DESELECTED
- */
- @Override
- public void onDeactivated(int reason) {
+ // Função de conversão de Hex para Byte Array (Se o projeto original não tiver)
+ // Se o Android Studio reclamar de Utils, crie um arquivo chamado Utils.java e coloque essas funções lá.
+ public static byte[] hexStringToByteArray(String s) {
+ int len = s.length();
+ 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;
}
- /**
- * This method will be called when a command APDU has been received from a remote device. A
- * response APDU can be provided directly by returning a byte-array in this method. In general
- * response APDUs must be sent as quickly as possible, given the fact that the user is likely
- * holding his device over an NFC reader when this method is called.
- *
- * If there are multiple services that have registered for the same AIDs in
- * their meta-data entry, you will only get called if the user has explicitly selected your
- * service, either as a default or just for the next tap.
- *
- *
This method is running on the main thread of your application. If you
- * cannot return a response APDU immediately, return null and use the {@link
- * #sendResponseApdu(byte[])} method later.
- *
- * @param commandApdu The APDU that received from the remote device
- * @param extras A bundle containing extra data. May be null.
- * @return a byte-array containing the response APDU, or null if no response APDU can be sent
- * at this point.
- */
-
@Override
public byte[] processCommandApdu(byte[] commandApdu, Bundle extras) {
- // The following flow is based on Appendix E "Example of Mapping Version 2.0 Command Flow"
- // in the NFC Forum specification
- Log.i(TAG, "Received APDU: " + byteArrayToHexString(commandApdu));
-
- // First command: Application select (Section 5.5.2 in NFC Forum spec)
- if (Arrays.equals(SELECT_APPLICATION_APDU, commandApdu)) {
- Log.i(TAG, "This is: 01 SELECT_APPLICATION_APDU");
- return SELECT_OK_SW;
+ if (commandApdu == null) {
+ return hexStringToByteArray("6F00"); // Erro genérico
+ }
- // Second command: GetData command, here returning any data and not from file01
- } else if (arraysStartWith(commandApdu, hexStringToByteArray(GET_DATA_APDU_HEADER))) {
- Log.i(TAG, "This is: 02 GET_DATA_APDU");
+ // Simulação de SELECT AID (APDU inicial)
+ // Se a maquininha mandar um SELECT AID (00A40400...), respondemos com a track gravada
+ String hexCommand = bytesToHex(commandApdu);
+ Log.d("HCE_LOG", "Recebido da Maquininha: " + hexCommand);
- // get the file number from commandApdu
- int fileNumber;
- byte[] fileContent;
- if (commandApdu.length == 7) {
- fileNumber = (int) commandApdu[5];
- if (fileNumber == 1) {
- fileContent = fileContent01.clone();
- } else if (fileNumber == 2) {
- fileContent = fileContent02.clone();
- } else {
- fileContent = fileContentUnknown.clone();
- }
- } else {
- fileContent = "Unknown Request".getBytes(StandardCharsets.UTF_8);
- }
- byte[] response = new byte[fileContent.length + SELECT_OK_SW.length];
- System.arraycopy(fileContent, 0, response, 0, fileContent.length);
- System.arraycopy(SELECT_OK_SW, 0, response, fileContent.length, SELECT_OK_SW.length);
- Log.i(TAG, "GET_DATA_APDU Our Response: " + byteArrayToHexString(response));
- return response;
- // write data to the emulated tag
- } else if (arraysStartWith(commandApdu, hexStringToByteArray(PUT_DATA_APDU_HEADER))) {
- Log.i(TAG, "This is: 03 PUT_DATA_APDU");
- // get the data length and file number from commandApdu
- int dataLength;
- int fileNumber;
- byte[] fileContent;
- if (commandApdu.length >= 7) {
- dataLength = (int) commandApdu[4];
- fileNumber = (int) commandApdu[5];
- // System.out.println("commandApdu l: " + commandApdu.length + " data l: " + dataLength + " fnr: " + fileNumber);
- // get the data
- if (commandApdu.length != (6 + dataLength)) {
- return UNKNOWN_CMD_SW;
- }
- fileContent = Arrays.copyOfRange(commandApdu, 6, (5 + dataLength));
- Log.i(TAG, "fileNr: " + fileNumber + " content: " + new String(fileContent, StandardCharsets.UTF_8));
- if (fileNumber == 1) {
- fileContent01 = fileContent.clone();
- } else if (fileNumber == 2) {
- fileContent02 = fileContent.clone();
- } else {
- fileContentUnknown = fileContent.clone();
- }
- } else {
- fileContent = "Unknown Request".getBytes(StandardCharsets.UTF_8);
- }
- return SELECT_OK_SW;
+ // O comando de seleção geralmente começa com 00A40400
+ if (hexCommand.startsWith("00A40400")) {
+ // Aqui pegamos a TRACK que você gravou na tela principal
+ SharedPreferences prefs = getSharedPreferences("NfcData", MODE_PRIVATE);
+ // Valor padrão: 9000 (Status OK). Se não tiver track gravada, o app continua funcionando.
+ String trackData = prefs.getString("TRACK_DATA", "9000");
+
+ Log.d("HCE_LOG", "Respondendo com Track gravada: " + trackData);
+ return hexStringToByteArray(trackData);
+ }
- // We're doing something outside our scope
- } else
- Log.wtf(TAG, "processCommandApdu() | I don't know what's going on!!!.");
- //return "Can I help you?".getBytes();
- return UNKNOWN_CMD_SW;
+ // Resposta padrão para outros comandos (Status OK)
+ return hexStringToByteArray("9000");
}
- boolean arraysStartWith(byte[] completeArray, byte[] compareArray) {
- int n = compareArray.length;
- // Log.d(TAG, "completeArray length: " + completeArray.length + " data: " + ByteArrayToHexString(completeArray));
- // Log.d(TAG, "compareArray length: " + compareArray.length + " data: " + ByteArrayToHexString(compareArray));
- return ByteBuffer.wrap(completeArray, 0, n).equals(ByteBuffer.wrap(compareArray, 0, n));
+ @Override
+ public void onDeactivated(int reason) {
+ Log.d("HCE_LOG", "Conexão terminada. Razão: " + reason);
}
- /**
- * Utility method to convert a byte array to a hexadecimal string.
- *
- * @param bytes Bytes to convert
- * @return String, containing hexadecimal representation.
- */
- public static String byteArrayToHexString(byte[] bytes) {
- final char[] hexArray = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
- char[] hexChars = new char[bytes.length * 2]; // Each byte has two hex characters (nibbles)
- int v;
+ // Função de conversão de Byte Array para Hex String (Para Log)
+ private static String bytesToHex(byte[] bytes) {
+ final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
+ char[] hexChars = new char[bytes.length * 2];
for (int j = 0; j < bytes.length; j++) {
- v = bytes[j] & 0xFF; // Cast bytes[j] to int, treating as unsigned value
- hexChars[j * 2] = hexArray[v >>> 4]; // Select hex character from upper nibble
- hexChars[j * 2 + 1] = hexArray[v & 0x0F]; // Select hex character from lower nibble
+ int v = bytes[j] & 0xFF;
+ hexChars[j * 2] = HEX_ARRAY[v >>> 4];
+ hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
}
return new String(hexChars);
}
-
- /**
- * Utility method to convert a hexadecimal string to a byte string.
- *
- *
Behavior with input strings containing non-hexadecimal characters is undefined.
- *
- * @param s String containing hexadecimal characters to convert
- * @return Byte array generated from input
- * @throws IllegalArgumentException if input length is incorrect
- */
- public static byte[] hexStringToByteArray(String s) throws IllegalArgumentException {
- int len = s.length();
- if (len % 2 == 1) {
- throw new IllegalArgumentException("Hex string must have even number of characters");
- }
- byte[] data = new byte[len / 2]; // Allocate 1 byte per 2 hex characters
- for (int i = 0; i < len; i += 2) {
- // Convert each character into a integer (base-16), then bit-shift into place
- data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
- + Character.digit(s.charAt(i + 1), 16));
- }
- return data;
- }
}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index ad5edc7..47d8cc1 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,24 +1,50 @@
-
+ android:layout_height="match_parent"
+ android:orientation="vertical"
+ android:padding="20dp"
+ android:gravity="center_horizontal">
-
+
+
+
+
+ android:layout_height="wrap_content"
+ android:hint="Ex: D27600008501019000"
+ android:minHeight="48dp"
+ android:inputType="textNoSuggestions"
+ android:autofillHints="no" />
-
-
\ No newline at end of file
+ android:text="Gravar Track na Memória"
+ android:layout_marginTop="10dp"/>
+
+
+
+
diff --git "a/\342\200\213.github/workflows/meu_apk.yml" "b/\342\200\213.github/workflows/meu_apk.yml"
new file mode 100644
index 0000000..97fe9d0
--- /dev/null
+++ "b/\342\200\213.github/workflows/meu_apk.yml"
@@ -0,0 +1,27 @@
+name: Gerar APK Android
+on: [push, workflow_dispatch]
+jobs:
+ build:
+ runs-on: ubuntu-latest
+ steps:
+ - name: Checkout do Código
+ uses: actions/checkout@v3
+
+ - name: Configurar Java
+ uses: actions/setup-java@v3
+ with:
+ java-version: '17'
+ distribution: 'temurin'
+
+ - name: Dar permissão ao Gradle
+ run: chmod +x gradlew
+
+ - name: Construir o APK
+ run: ./gradlew assembleDebug
+
+ - name: Upload do APK Pronto
+ uses: actions/upload-artifact@v3
+ with:
+ name: MeuApp-NFC
+ path: app/build/outputs/apk/debug/app-debug.apk
+