nicer crosshair, icons instead of text buttons, share history

README.md

@@ -1,35 +1,50 @@
 # Clean Scanner (MVP)
 
-Offline-first, ad-free QR/barcode scanner built with Kotlin + Compose + CameraX + ML Kit.
+Offline-first, ad-free QR/barcode scanner built with Kotlin, Jetpack Compose, CameraX, and on-device ML Kit.
 
 ## Architektur
-- `ui/`: Compose-Screens + ViewModels (MVVM presentation layer)
+- `ui/`: Compose screens/components + ViewModels (MVVM)
-- `data/`: Scanner-Analyzer, Room entities/DAO, Repository
+- `data/`: ML Kit analyzer, Room entities/DAO, repository
 - `domain/`: app models (`ScanResult`, `ScanRecord`, `UrlRiskResult`)
-- `settings/`: DataStore preferences (history toggle, warnings toggle)
+- `settings/`: DataStore preferences (history + warnings toggles)
-- `util/`: URL risk scorer, clipboard, intents
+- `util/`: URL risk scoring, clipboard, intents
 
 ## Datenschutz
 - Keine Werbung
 - Keine Tracker/Analytics/Crashlytics
-- Kein Backend/keine Webrequests
+- Kein Backend, keine Servercalls
 - Keine `INTERNET`-Permission im Manifest
 
 ## MVP Features
-- Startscreen mit Scan-Button und lokalem Historie-Toggle (Default: OFF)
+- Home: Scan-Button, lokaler Historie-Toggle (Default: OFF), Datenschutz-Dialog
-- Scanner mit CameraX live preview, Taschenlampe, debounce/no double scan
+- Scanner: CameraX Live-Preview, Fadenkreuz-Overlay, Taschenlampe, Debounce gegen Doppelscans
-- Ergebnis-Bottom-Sheet mit Copy/Share/Open/Scan again
+- Ergebnis-Bottom-Sheet: Typ/Inhalt + Copy/Share/Open/Scan again
-- Lokale URL-Risikoheuristik mit Warn-Dialog ab Score `>= 3`
+- URL-Sicherheitswarnung bei lokalem `riskScore >= 3` (kein Blocken, nur Hinweis)
-- Historie-Liste inkl. Suche, Swipe-delete, Alles-löschen
+- Historie: Suche, Swipe-to-delete, Alles-löschen, Detailansicht mit Volltext
-- Einstellungen: Historie an/aus, Warnungen an/aus, About
+- Einstellungen: Historie an/aus (mit optionalem Löschen), Warnungen an/aus, About-Infos
 
-## Run
+## Voraussetzungen
-1. In Android Studio: Open this folder as project.
+- Android Studio (aktuell stabil)
-2. Let Gradle sync dependencies.
+- JDK 17+
-3. Run app on emulator/device (API 24+).
+- Android SDK für `compileSdk = 35`
+
+## Build & Run
+1. Projekt in Android Studio öffnen.
+2. Gradle Sync ausführen.
+3. App auf Emulator/Device (API 24+) starten.
+
+CLI:
+
+```bash
+./gradlew :app:assembleDebug
+./gradlew :app:installDebug
+```
 
 ## Tests
-- URL Risk Scorer Tests: `app/src/test/java/com/clean/scanner/util/UrlRiskScorerTest.kt` (11 cases)
+- Unit tests:
 
-## Hinweis
+```bash
-In dieser Umgebung war kein `gradle`/`gradlew` verfügbar, daher konnte ich Builds/Tests hier nicht lokal ausführen.
+./gradlew testDebugUnitTest
+```
+
+- URL-Risk-Scorer tests: `app/src/test/java/com/clean/scanner/util/UrlRiskScorerTest.kt`

app/build.gradle.kts

@@ -74,6 +74,7 @@ dependencies {
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.ui:ui-tooling-preview")
     implementation("androidx.compose.material3:material3")
+    implementation("androidx.compose.material:material-icons-extended")
     implementation("com.google.android.material:material:1.12.0")
     implementation("androidx.navigation:navigation-compose:2.8.2")
 

app/src/main/java/com/clean/scanner/MainActivity.kt

@@ -6,13 +6,14 @@ import androidx.activity.compose.setContent
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import com.clean.scanner.ui.CleanScannerAppRoot
+import com.clean.scanner.ui.theme.CleanScannerTheme
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         val container = (application as CleanScannerApp).appContainer
         setContent {
-            MaterialTheme {
+            CleanScannerTheme {
                 Surface(color = MaterialTheme.colorScheme.background) {
                     CleanScannerAppRoot(container)
                 }

app/src/main/java/com/clean/scanner/ui/CleanScannerAppRoot.kt

@@ -1,5 +1,7 @@
 package com.clean.scanner.ui
 
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.NavigationBar
 import androidx.compose.material3.NavigationBarItem
 import androidx.compose.material3.Scaffold
@@ -9,17 +11,17 @@ import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.clean.scanner.AppContainer
 import com.clean.scanner.R
 import com.clean.scanner.ui.screens.HistoryScreen
-import com.clean.scanner.ui.screens.HomeScreen
 import com.clean.scanner.ui.screens.ScannerScreen
 import com.clean.scanner.ui.screens.SettingsScreen
 
-private enum class RootTab { Home, History, Settings }
+private enum class RootTab { Scanner, History, Settings }
 
 @Composable
 fun CleanScannerAppRoot(container: AppContainer) {
@@ -28,17 +30,16 @@ fun CleanScannerAppRoot(container: AppContainer) {
     val appState by appViewModel.uiState.collectAsStateWithLifecycle()
     val scannerState by scannerViewModel.uiState.collectAsStateWithLifecycle()
 
-    var activeTab by remember { mutableStateOf(RootTab.Home) }
+    var activeTab by remember { mutableStateOf(RootTab.Scanner) }
-    var showScanner by remember { mutableStateOf(false) }
 
     Scaffold(
         bottomBar = {
             NavigationBar {
                 NavigationBarItem(
-                    selected = activeTab == RootTab.Home,
+                    selected = activeTab == RootTab.Scanner,
                     onClick = {
-                        activeTab = RootTab.Home
+                        activeTab = RootTab.Scanner
-                        showScanner = false
+                        scannerViewModel.resumeScanning()
                     },
                     label = { Text(stringResource(R.string.scan)) },
                     icon = {}
@@ -47,7 +48,6 @@ fun CleanScannerAppRoot(container: AppContainer) {
                     selected = activeTab == RootTab.History,
                     onClick = {
                         activeTab = RootTab.History
-                        showScanner = false
                     },
                     label = { Text(stringResource(R.string.history)) },
                     icon = {}
@@ -56,7 +56,6 @@ fun CleanScannerAppRoot(container: AppContainer) {
                     selected = activeTab == RootTab.Settings,
                     onClick = {
                         activeTab = RootTab.Settings
-                        showScanner = false
                     },
                     label = { Text(stringResource(R.string.settings)) },
                     icon = {}
@@ -64,9 +63,9 @@ fun CleanScannerAppRoot(container: AppContainer) {
             }
         }
     ) { padding ->
-        androidx.compose.foundation.layout.Box(modifier = androidx.compose.ui.Modifier.padding(padding)) {
+        Box(modifier = Modifier.padding(padding)) {
-            when {
+            when (activeTab) {
-                showScanner -> ScannerScreen(
+                RootTab.Scanner -> ScannerScreen(
                     analysisEnabled = scannerState.analysisEnabled,
                     lastResult = scannerState.lastResult,
                     warningsEnabled = appState.warningsEnabled,
@@ -74,16 +73,7 @@ fun CleanScannerAppRoot(container: AppContainer) {
                     onScanAgain = scannerViewModel::resumeScanning
                 )
 
-                activeTab == RootTab.Home -> HomeScreen(
+                RootTab.History -> HistoryScreen(
-                    historyEnabled = appState.historyEnabled,
-                    onHistoryToggle = { appViewModel.setHistoryEnabled(it, false) },
-                    onScanClick = {
-                        showScanner = true
-                        scannerViewModel.resumeScanning()
-                    }
-                )
-
-                activeTab == RootTab.History -> HistoryScreen(
                     query = appState.searchQuery,
                     history = appState.history,
                     onQueryChange = appViewModel::setQuery,
@@ -91,7 +81,7 @@ fun CleanScannerAppRoot(container: AppContainer) {
                     onClearAll = appViewModel::clearHistory
                 )
 
-                activeTab == RootTab.Settings -> SettingsScreen(
+                RootTab.Settings -> SettingsScreen(
                     historyEnabled = appState.historyEnabled,
                     warningsEnabled = appState.warningsEnabled,
                     onHistoryToggle = appViewModel::setHistoryEnabled,

app/src/main/java/com/clean/scanner/ui/components/CameraPreview.kt

@@ -1,6 +1,8 @@
 package com.clean.scanner.ui.components
 
 import android.annotation.SuppressLint
+import android.view.MotionEvent
+import android.view.ScaleGestureDetector
 import androidx.camera.core.CameraSelector
 import androidx.camera.core.ImageAnalysis
 import androidx.camera.core.Preview
@@ -13,12 +15,14 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.core.content.ContextCompat
 import com.clean.scanner.data.scanner.MlKitBarcodeAnalyzer
 import java.util.concurrent.ExecutorService
 import java.util.concurrent.Executors
+import kotlin.math.max
+import kotlin.math.min
 
 @SuppressLint("UnsafeOptInUsageError")
 @Composable
@@ -34,6 +38,21 @@ fun CameraPreview(
     val cameraExecutor: ExecutorService = remember { Executors.newSingleThreadExecutor() }
     val previewView = remember { PreviewView(context) }
     val cameraRef = remember { mutableStateOf<androidx.camera.core.Camera?>(null) }
+    val zoomRatio = remember { mutableStateOf(1f) }
+
+    val scaleGestureDetector = remember {
+        ScaleGestureDetector(context, object : ScaleGestureDetector.SimpleOnScaleGestureListener() {
+            override fun onScale(detector: ScaleGestureDetector): Boolean {
+                val camera = cameraRef.value ?: return false
+                val zoomState = camera.cameraInfo.zoomState.value ?: return false
+                val nextZoom = zoomRatio.value * detector.scaleFactor
+                val clampedZoom = max(zoomState.minZoomRatio, min(nextZoom, zoomState.maxZoomRatio))
+                zoomRatio.value = clampedZoom
+                camera.cameraControl.setZoomRatio(clampedZoom)
+                return true
+            }
+        })
+    }
 
     DisposableEffect(Unit) {
         onDispose {
@@ -70,6 +89,7 @@ fun CameraPreview(
 
         onTorchAvailabilityChanged(camera.cameraInfo.hasFlashUnit())
         cameraRef.value = camera
+        zoomRatio.value = camera.cameraInfo.zoomState.value?.zoomRatio ?: 1f
     }
 
     LaunchedEffect(torchEnabled) {
@@ -78,6 +98,16 @@ fun CameraPreview(
 
     AndroidView(
         modifier = modifier,
-        factory = { previewView }
+        factory = {
+            previewView.apply {
+                setOnTouchListener { _, event ->
+                    if (event.actionMasked == MotionEvent.ACTION_DOWN) {
+                        performClick()
+                    }
+                    scaleGestureDetector.onTouchEvent(event)
+                    true
+                }
+            }
+        }
     )
 }

app/src/main/java/com/clean/scanner/ui/screens/HistoryScreen.kt

@@ -1,7 +1,9 @@
 package com.clean.scanner.ui.screens
 
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
@@ -19,10 +21,12 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import com.clean.scanner.R
 import com.clean.scanner.domain.ScanRecord
+import com.clean.scanner.util.Intents
 import java.text.DateFormat
 import java.util.Date
 
@@ -34,7 +38,9 @@ fun HistoryScreen(
     onDelete: (Long) -> Unit,
     onClearAll: () -> Unit
 ) {
+    val context = LocalContext.current
     val showDeleteAll = remember { mutableStateOf(false) }
+    val selectedItem = remember { mutableStateOf<ScanRecord?>(null) }
 
     if (showDeleteAll.value) {
         AlertDialog(
@@ -55,6 +61,20 @@ fun HistoryScreen(
         )
     }
 
+    val detail = selectedItem.value
+    if (detail != null) {
+        AlertDialog(
+            onDismissRequest = { selectedItem.value = null },
+            title = { Text(text = detail.type) },
+            text = { Text(text = detail.content) },
+            confirmButton = {
+                TextButton(onClick = { selectedItem.value = null }) {
+                    Text(text = stringResource(R.string.confirm))
+                }
+            }
+        )
+    }
+
     Column(
         modifier = Modifier
             .fillMaxSize()
@@ -68,13 +88,28 @@ fun HistoryScreen(
             label = { Text(stringResource(R.string.search)) }
         )
 
+        Row(modifier = Modifier.fillMaxWidth()) {
+            TextButton(
+                onClick = {
+                    val exportText = buildHistoryExportText(history)
+                    Intents.shareText(context, exportText)
+                },
+                enabled = history.isNotEmpty()
+            ) {
+                Text(stringResource(R.string.share_history))
+            }
             TextButton(onClick = { showDeleteAll.value = true }) {
                 Text(stringResource(R.string.delete_all))
             }
+        }
 
         LazyColumn {
             items(history, key = { it.id }) { item ->
-                HistoryRow(item = item, onDelete = onDelete)
+                HistoryRow(
+                    item = item,
+                    onDelete = onDelete,
+                    onOpenDetails = { selectedItem.value = item }
+                )
             }
         }
     }
@@ -82,7 +117,11 @@ fun HistoryScreen(
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-private fun HistoryRow(item: ScanRecord, onDelete: (Long) -> Unit) {
+private fun HistoryRow(
+    item: ScanRecord,
+    onDelete: (Long) -> Unit,
+    onOpenDetails: () -> Unit
+) {
     val dismissState = rememberSwipeToDismissBoxState(
         confirmValueChange = {
             if (it == SwipeToDismissBoxValue.EndToStart || it == SwipeToDismissBoxValue.StartToEnd) {
@@ -100,6 +139,7 @@ private fun HistoryRow(item: ScanRecord, onDelete: (Long) -> Unit) {
         content = {
             Column(modifier = Modifier
                 .fillMaxWidth()
+                .clickable { onOpenDetails() }
                 .padding(vertical = 12.dp)) {
                 Text(text = item.type)
                 Text(text = item.content, maxLines = 2)
@@ -108,3 +148,12 @@ private fun HistoryRow(item: ScanRecord, onDelete: (Long) -> Unit) {
         }
     )
 }
+
+private fun buildHistoryExportText(history: List<ScanRecord>): String {
+    if (history.isEmpty()) return ""
+    val formatter = DateFormat.getDateTimeInstance()
+    return history.joinToString(separator = "\n\n") { item ->
+        val time = formatter.format(Date(item.timestamp))
+        "$time\n${item.type}\n${item.content}"
+    }
+}

app/src/main/java/com/clean/scanner/ui/screens/HomeScreen.kt

@@ -7,11 +7,15 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
@@ -24,6 +28,21 @@ fun HomeScreen(
     onHistoryToggle: (Boolean) -> Unit,
     onScanClick: () -> Unit
 ) {
+    val showPrivacyDialog = remember { mutableStateOf(false) }
+
+    if (showPrivacyDialog.value) {
+        AlertDialog(
+            onDismissRequest = { showPrivacyDialog.value = false },
+            title = { Text(text = stringResource(R.string.privacy)) },
+            text = { Text(text = stringResource(R.string.privacy_text)) },
+            confirmButton = {
+                TextButton(onClick = { showPrivacyDialog.value = false }) {
+                    Text(text = stringResource(R.string.confirm))
+                }
+            }
+        )
+    }
+
     Column(
         modifier = Modifier
             .fillMaxSize()
@@ -47,13 +66,12 @@ fun HomeScreen(
 
         Spacer(modifier = Modifier.height(24.dp))
 
+        TextButton(onClick = { showPrivacyDialog.value = true }) {
             Text(
                 text = stringResource(R.string.privacy),
-            style = MaterialTheme.typography.titleMedium
+                style = MaterialTheme.typography.titleMedium,
-        )
-        Text(
-            text = stringResource(R.string.privacy_text),
                 textAlign = TextAlign.Start
             )
         }
+    }
 }

app/src/main/java/com/clean/scanner/ui/screens/ScannerScreen.kt

@@ -7,17 +7,27 @@ import android.net.Uri
 import android.provider.Settings
 import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ContentCopy
+import androidx.compose.material.icons.filled.Share
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
@@ -31,8 +41,11 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.geometry.CornerRadius
+import androidx.compose.ui.graphics.drawscope.Stroke
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
@@ -96,12 +109,42 @@ fun ScannerScreen(
                 }
             )
 
-            Box(
+            Canvas(
                 modifier = Modifier
                     .align(Alignment.Center)
                     .fillMaxWidth(0.7f)
                     .height(220.dp)
-                    .background(Color.Transparent)
+            ) {
+                val guideColor = Color(0xFF7CE6C6)
+                val cx = size.width / 2f
+                val cy = size.height / 2f
+                drawRoundRect(
+                    color = guideColor.copy(alpha = 0.10f),
+                    cornerRadius = CornerRadius(26f, 26f)
+                )
+                drawRoundRect(
+                    color = guideColor.copy(alpha = 0.90f),
+                    cornerRadius = CornerRadius(26f, 26f),
+                    style = Stroke(width = 4f)
+                )
+                drawCircle(
+                    color = guideColor.copy(alpha = 0.90f),
+                    radius = 8f,
+                    center = androidx.compose.ui.geometry.Offset(cx, cy)
+                )
+            }
+            Text(
+                text = stringResource(R.string.pinch_to_zoom_hint),
+                color = Color.White,
+                textAlign = TextAlign.Center,
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .padding(bottom = 40.dp)
+                    .background(
+                        color = Color.Black.copy(alpha = 0.35f),
+                        shape = RoundedCornerShape(18.dp)
+                    )
+                    .padding(horizontal = 14.dp, vertical = 8.dp)
             )
 
             if (torchAvailable) {
@@ -126,7 +169,7 @@ fun ScannerScreen(
         }
 
         if (lastResult != null) {
-            ModalBottomSheet(onDismissRequest = {}) {
+            ModalBottomSheet(onDismissRequest = onScanAgain) {
                 Column(
                     modifier = Modifier
                         .fillMaxWidth()
@@ -135,8 +178,17 @@ fun ScannerScreen(
                 ) {
                     Text(text = "${stringResource(R.string.content_type)}: ${lastResult.type}")
                     Text(text = "${stringResource(R.string.content_value)}: ${lastResult.content}")
-                    Button(onClick = { ClipboardUtil.copy(context, lastResult.content) }) {
+                    Row(
-                        Text(stringResource(R.string.copy))
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .horizontalScroll(rememberScrollState()),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        IconButton(onClick = { ClipboardUtil.copy(context, lastResult.content) }) {
+                            Icon(
+                                imageVector = Icons.Default.ContentCopy,
+                                contentDescription = stringResource(R.string.copy)
+                            )
                         }
                         if (lastResult.type == "URL") {
                             Button(onClick = {
@@ -152,11 +204,12 @@ fun ScannerScreen(
                                 Text(stringResource(R.string.open))
                             }
                         }
-                    Button(onClick = { Intents.shareText(context, lastResult.content) }) {
+                        IconButton(onClick = { Intents.shareText(context, lastResult.content) }) {
-                        Text(stringResource(R.string.share))
+                            Icon(
+                                imageVector = Icons.Default.Share,
+                                contentDescription = stringResource(R.string.share)
+                            )
                         }
-                    Button(onClick = onScanAgain) {
-                        Text(stringResource(R.string.scan_again))
                     }
                 }
             }

app/src/main/java/com/clean/scanner/ui/theme/Theme.kt

@@ -0,0 +1,31 @@
+package com.clean.scanner.ui.theme
+
+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 LightColors = lightColorScheme()
+private val DarkColors = darkColorScheme()
+
+@Composable
+fun CleanScannerTheme(content: @Composable () -> Unit) {
+    val darkTheme = isSystemInDarkTheme()
+    val context = LocalContext.current
+
+    val colorScheme = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+        if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+    } else {
+        if (darkTheme) DarkColors else LightColors
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        content = content
+    )
+}

app/src/main/res/values-de/strings.xml

@@ -31,4 +31,6 @@
     <string name="content_type">Typ</string>
     <string name="content_value">Inhalt</string>
     <string name="request_camera">Kamera erlauben</string>
+    <string name="pinch_to_zoom_hint">Zum Zoomen bei kleinen Codes mit zwei Fingern aufziehen</string>
+    <string name="share_history">Historie teilen</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -31,4 +31,6 @@
     <string name="content_type">Type</string>
     <string name="content_value">Content</string>
     <string name="request_camera">Allow camera</string>
+    <string name="pinch_to_zoom_hint">Pinch to zoom for small codes</string>
+    <string name="share_history">Share history</string>
 </resources>

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    id("com.android.application") version "8.7.0" apply false
+    id("com.android.application") version "8.13.2" apply false
     id("org.jetbrains.kotlin.android") version "1.9.24" apply false
     id("com.google.devtools.ksp") version "1.9.24-1.0.20" apply false
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists