Add Android NFC App

This commit is contained in:
2025-10-04 17:36:55 +02:00
parent cee9bc483b
commit c8981c1ada
39 changed files with 1031 additions and 0 deletions

1
Android/NFCApp/app/.gitignore vendored Normal file
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/build

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plugins {
alias(libs.plugins.android.application)
alias(libs.plugins.kotlin.android)
alias(libs.plugins.kotlin.compose)
}
android {
namespace = "com.structix.nfcapp"
compileSdk = 34
defaultConfig {
applicationId = "com.structix.nfcapp"
minSdk = 24
targetSdk = 34
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_11
targetCompatibility = JavaVersion.VERSION_11
}
kotlinOptions {
jvmTarget = "11"
}
buildFeatures {
compose = true
}
}
dependencies {
implementation("com.squareup.okhttp3:okhttp:4.12.0")
implementation(libs.androidx.core.ktx)
implementation(libs.androidx.lifecycle.runtime.ktx)
implementation(libs.androidx.activity.compose)
implementation(platform(libs.androidx.compose.bom))
implementation(libs.androidx.ui)
implementation(libs.androidx.ui.graphics)
implementation(libs.androidx.ui.tooling.preview)
implementation(libs.androidx.material3)
testImplementation(libs.junit)
androidTestImplementation(libs.androidx.junit)
androidTestImplementation(libs.androidx.espresso.core)
androidTestImplementation(platform(libs.androidx.compose.bom))
androidTestImplementation(libs.androidx.ui.test.junit4)
debugImplementation(libs.androidx.ui.tooling)
debugImplementation(libs.androidx.ui.test.manifest)
}

21
Android/NFCApp/app/proguard-rules.pro vendored Normal file
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile

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package com.structix.nfcapp
import androidx.test.platform.app.InstrumentationRegistry
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.Assert.*
/**
* Instrumented test, which will execute on an Android device.
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
@Test
fun useAppContext() {
// Context of the app under test.
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
assertEquals("com.structix.nfcapp", appContext.packageName)
}
}

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="android.hardware.nfc" android:required="true" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.NFCApp"
android:networkSecurityConfig="@xml/network_security_config"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:exported="true"
android:label="@string/app_name"
android:theme="@style/Theme.NFCApp">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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package com.structix.nfcapp
import android.app.PendingIntent
import android.content.Intent
import android.content.IntentFilter
import android.nfc.NfcAdapter
import android.nfc.Tag
import android.os.Bundle
import android.util.Log
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.structix.nfcapp.ui.theme.NFCAppTheme
import okhttp3.Call
import okhttp3.Callback
import okhttp3.FormBody
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import java.io.IOException
class MainActivity : ComponentActivity() {
private var nfcAdapter: NfcAdapter? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
enableEdgeToEdge()
setContent {
NFCAppTheme {
Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
Greeting(
name = "Android",
modifier = Modifier.padding(innerPadding)
)
}
}
}
nfcAdapter = NfcAdapter.getDefaultAdapter(this)
}
override fun onResume() {
super.onResume()
val intent = Intent(this, javaClass).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
val pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_MUTABLE)
val filters = arrayOf(IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED))
nfcAdapter?.enableForegroundDispatch(this, pendingIntent, filters, null)
}
override fun onPause() {
super.onPause()
nfcAdapter?.disableForegroundDispatch(this)
}
override fun onNewIntent(intent: Intent) {
super.onNewIntent(intent)
if (NfcAdapter.ACTION_TAG_DISCOVERED == intent.action) {
val tag: Tag? = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG)
val id: ByteArray? = tag?.id
val serial = id?.joinToString("") { String.format("%02X", it) }
Log.d("NFC", "Card UID: $serial")
sendSerialToServer(serial ?: "")
}
}
private fun sendSerialToServer(serial: String) {
val client = OkHttpClient()
Log.d("HTTP", "Serial: ${serial}")
val request = Request.Builder()
.url("http://192.168.0.100:3000/usercard/" + serial) // Replace with your actual URL
.get()
.build()
client.newCall(request).enqueue(object : Callback {
override fun onFailure(call: Call, e: IOException) {
Log.e("HTTP", "Failed to send UID", e)
}
override fun onResponse(call: Call, response: Response) {
Log.d("HTTP", "Server responded: ${response.body?.string()}")
}
})
}
}
@Composable
fun Greeting(name: String, modifier: Modifier = Modifier) {
Text(
text = "Hello $name!",
modifier = modifier
)
}
@Preview(showBackground = true)
@Composable
fun GreetingPreview() {
NFCAppTheme {
Greeting("Android")
}
}

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package com.structix.nfcapp.ui.theme
import androidx.compose.ui.graphics.Color
val Purple80 = Color(0xFFD0BCFF)
val PurpleGrey80 = Color(0xFFCCC2DC)
val Pink80 = Color(0xFFEFB8C8)
val Purple40 = Color(0xFF6650a4)
val PurpleGrey40 = Color(0xFF625b71)
val Pink40 = Color(0xFF7D5260)

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package com.structix.nfcapp.ui.theme
import android.app.Activity
import android.os.Build
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.darkColorScheme
import androidx.compose.material3.dynamicDarkColorScheme
import androidx.compose.material3.dynamicLightColorScheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.runtime.Composable
import androidx.compose.ui.platform.LocalContext
private val DarkColorScheme = darkColorScheme(
primary = Purple80,
secondary = PurpleGrey80,
tertiary = Pink80
)
private val LightColorScheme = lightColorScheme(
primary = Purple40,
secondary = PurpleGrey40,
tertiary = Pink40
/* Other default colors to override
background = Color(0xFFFFFBFE),
surface = Color(0xFFFFFBFE),
onPrimary = Color.White,
onSecondary = Color.White,
onTertiary = Color.White,
onBackground = Color(0xFF1C1B1F),
onSurface = Color(0xFF1C1B1F),
*/
)
@Composable
fun NFCAppTheme(
darkTheme: Boolean = isSystemInDarkTheme(),
// Dynamic color is available on Android 12+
dynamicColor: Boolean = true,
content: @Composable () -> Unit
) {
val colorScheme = when {
dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
val context = LocalContext.current
if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
}
darkTheme -> DarkColorScheme
else -> LightColorScheme
}
MaterialTheme(
colorScheme = colorScheme,
typography = Typography,
content = content
)
}

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package com.structix.nfcapp.ui.theme
import androidx.compose.material3.Typography
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.sp
// Set of Material typography styles to start with
val Typography = Typography(
bodyLarge = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Normal,
fontSize = 16.sp,
lineHeight = 24.sp,
letterSpacing = 0.5.sp
)
/* Other default text styles to override
titleLarge = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Normal,
fontSize = 22.sp,
lineHeight = 28.sp,
letterSpacing = 0.sp
),
labelSmall = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Medium,
fontSize = 11.sp,
lineHeight = 16.sp,
letterSpacing = 0.5.sp
)
*/
)

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<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#3DDC84"
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<path
android:fillColor="#00000000"
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android:strokeWidth="0.8"
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android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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android:strokeColor="#33FFFFFF" />
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</vector>

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<vector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt"
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android:height="108dp"
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<aapt:attr name="android:fillColor">
<gradient
android:endX="85.84757"
android:endY="92.4963"
android:startX="42.9492"
android:startY="49.59793"
android:type="linear">
<item
android:color="#44000000"
android:offset="0.0" />
<item
android:color="#00000000"
android:offset="1.0" />
</gradient>
</aapt:attr>
</path>
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android:strokeWidth="1"
android:strokeColor="#00000000" />
</vector>

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<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
<monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

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<?xml version="1.0" encoding="utf-8"?>
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="@drawable/ic_launcher_background" />
<foreground android:drawable="@drawable/ic_launcher_foreground" />
<monochrome android:drawable="@drawable/ic_launcher_foreground" />
</adaptive-icon>

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<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="purple_200">#FFBB86FC</color>
<color name="purple_500">#FF6200EE</color>
<color name="purple_700">#FF3700B3</color>
<color name="teal_200">#FF03DAC5</color>
<color name="teal_700">#FF018786</color>
<color name="black">#FF000000</color>
<color name="white">#FFFFFFFF</color>
</resources>

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<resources>
<string name="app_name">NFCApp</string>
</resources>

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<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="Theme.NFCApp" parent="android:Theme.Material.Light.NoActionBar" />
</resources>

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<?xml version="1.0" encoding="utf-8"?><!--
Sample backup rules file; uncomment and customize as necessary.
See https://developer.android.com/guide/topics/data/autobackup
for details.
Note: This file is ignored for devices older that API 31
See https://developer.android.com/about/versions/12/backup-restore
-->
<full-backup-content>
<!--
<include domain="sharedpref" path="."/>
<exclude domain="sharedpref" path="device.xml"/>
-->
</full-backup-content>

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<?xml version="1.0" encoding="utf-8"?><!--
Sample data extraction rules file; uncomment and customize as necessary.
See https://developer.android.com/about/versions/12/backup-restore#xml-changes
for details.
-->
<data-extraction-rules>
<cloud-backup>
<!-- TODO: Use <include> and <exclude> to control what is backed up.
<include .../>
<exclude .../>
-->
</cloud-backup>
<!--
<device-transfer>
<include .../>
<exclude .../>
</device-transfer>
-->
</data-extraction-rules>

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<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
<domain-config cleartextTrafficPermitted="true">
<domain includeSubdomains="true">192.168.0.100</domain>
</domain-config>
</network-security-config>

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package com.structix.nfcapp
import org.junit.Test
import org.junit.Assert.*
/**
* Example local unit test, which will execute on the development machine (host).
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
class ExampleUnitTest {
@Test
fun addition_isCorrect() {
assertEquals(4, 2 + 2)
}
}