Localize all visible button labels and dialogs via string resources:

values/strings.xml (English default) and values-de/strings.xml
cover section headers, hero disk buttons, sound toggle, import
button, file picker title, and the replace-disk confirmation dialog

SchwertUndMagieOnPebbleCompanionApp/app/src/main/java/de/ladkau/schwertundmagieonpebblecompanionapp/MainActivity.kt

@@ -150,14 +150,14 @@ class MainActivity : AppCompatActivity() {
         findViewById<Button>(R.id.btn_help).setOnClickListener { showHelp() }
 
         findViewById<Button>(R.id.btn_import_disks).setOnClickListener {
-            launchPicker(diskPickerLauncher, "Select SCHWUM disk images", multiSelect = true)
+            launchPicker(diskPickerLauncher, getString(R.string.picker_title), multiSelect = true)
         }
 
         val btnSound = findViewById<Button>(R.id.btn_sound)
         btnSound.setOnClickListener {
             soundEnabled = !soundEnabled
             engine.setSoundEnabled(soundEnabled)
-            btnSound.text = if (soundEnabled) "Sound: ON" else "Sound: OFF"
+            btnSound.text = getString(if (soundEnabled) R.string.sound_on else R.string.sound_off)
         }
 
         val btnReset = findViewById<Button>(R.id.btn_reset)
@@ -297,7 +297,7 @@ class MainActivity : AppCompatActivity() {
     private fun loadDiskSlot(slot: DiskSlot) {
         if (slot.part == 'B' && slot.episode !in loadedADisks) {
             val aLabel = diskSlots.first { it.episode == slot.episode && it.part == 'A' }.label
-            val msg = "Load $aLabel first — ${slot.label} continues from where it left off"
+            val msg = getString(R.string.load_a_first, aLabel, slot.label)
             Toast.makeText(this, msg, Toast.LENGTH_LONG).show()
             appendLog(msg)
             return
@@ -361,10 +361,10 @@ class MainActivity : AppCompatActivity() {
         val dest = File(assetDir, slot.fileName)
         if (dest.exists()) {
             AlertDialog.Builder(this)
-                .setTitle("Diskette ersetzen?")
-                .setMessage("${slot.label} existiert bereits. Alle gespeicherten Daten gehen verloren.")
-                .setPositiveButton("Ersetzen") { _, _ -> writeHeroDisk(slot) }
-                .setNegativeButton("Abbrechen", null)
+                .setTitle(R.string.replace_disk_title)
+                .setMessage(getString(R.string.replace_disk_msg, slot.label))
+                .setPositiveButton(R.string.replace_disk_confirm) { _, _ -> writeHeroDisk(slot) }
+                .setNegativeButton(R.string.cancel, null)
                 .show()
         } else {
             writeHeroDisk(slot)
@@ -377,9 +377,9 @@ class MainActivity : AppCompatActivity() {
         try {
             dest.writeBytes(createBlankD64(slot.label))
             refreshDiskButtons()
-            appendLog("Erstellt: ${slot.label}")
+            appendLog(getString(R.string.hero_disk_created, slot.label))
         } catch (e: Exception) {
-            appendLog("Fehler beim Erstellen: ${slot.label}")
+            appendLog(getString(R.string.hero_disk_create_failed, slot.label))
             Log.e(TAG, "createHeroDisk failed", e)
         }
     }
@@ -465,10 +465,10 @@ class MainActivity : AppCompatActivity() {
             assets.open(if (german) "help_de.md" else "help_en.md").bufferedReader().readText()
         } catch (e: Exception) { "Help text unavailable." }
 
-        var german = true
+        var german = java.util.Locale.getDefault().language == "de"
 
         val tv = android.widget.TextView(this).apply {
-            text = load(true)
+            text = load(german)
             typeface = android.graphics.Typeface.MONOSPACE
             textSize = 12f
             setTextColor(Color.parseColor("#DDDDDD"))
@@ -483,7 +483,7 @@ class MainActivity : AppCompatActivity() {
             .setTitle("Schwert und Magie auf Pebble")
             .setView(scroll)
             .setPositiveButton("OK", null)
-            .setNeutralButton("English", null)
+            .setNeutralButton(if (german) "English" else "Deutsch", null)
             .show()
 
         dialog.getButton(AlertDialog.BUTTON_NEUTRAL).setOnClickListener {

SchwertUndMagieOnPebbleCompanionApp/app/src/main/res/layout/activity_main.xml

@@ -128,7 +128,7 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Disketten"
+            android:text="@string/section_disks"
             android:textColor="#AAFFAA"
             android:textSize="12sp"
             android:textStyle="bold"
@@ -191,7 +191,7 @@
         <TextView
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Helden-Disketten"
+            android:text="@string/section_hero_disks"
             android:textColor="#AAFFAA"
             android:textSize="12sp"
             android:textStyle="bold"
@@ -202,10 +202,10 @@
             <Button android:id="@+id/btn_hero_1" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="0dp" android:layout_height="wrap_content"
                 android:layout_weight="1" android:gravity="center_vertical|start"
-                android:text="Held 1" android:textSize="12sp" android:enabled="false" />
+                android:text="@string/hero_1" android:textSize="12sp" android:enabled="false" />
             <Button android:id="@+id/btn_hero_1_new" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="wrap_content" android:layout_height="wrap_content"
-                android:layout_marginStart="4dp" android:text="Neu" android:textSize="11sp" />
+                android:layout_marginStart="4dp" android:text="@string/btn_new" android:textSize="11sp" />
         </LinearLayout>
 
         <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
@@ -213,10 +213,10 @@
             <Button android:id="@+id/btn_hero_2" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="0dp" android:layout_height="wrap_content"
                 android:layout_weight="1" android:gravity="center_vertical|start"
-                android:text="Held 2" android:textSize="12sp" android:enabled="false" />
+                android:text="@string/hero_2" android:textSize="12sp" android:enabled="false" />
             <Button android:id="@+id/btn_hero_2_new" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="wrap_content" android:layout_height="wrap_content"
-                android:layout_marginStart="4dp" android:text="Neu" android:textSize="11sp" />
+                android:layout_marginStart="4dp" android:text="@string/btn_new" android:textSize="11sp" />
         </LinearLayout>
 
         <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"
@@ -224,10 +224,10 @@
             <Button android:id="@+id/btn_hero_3" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="0dp" android:layout_height="wrap_content"
                 android:layout_weight="1" android:gravity="center_vertical|start"
-                android:text="Held 3" android:textSize="12sp" android:enabled="false" />
+                android:text="@string/hero_3" android:textSize="12sp" android:enabled="false" />
             <Button android:id="@+id/btn_hero_3_new" style="?attr/materialButtonOutlinedStyle"
                 android:layout_width="wrap_content" android:layout_height="wrap_content"
-                android:layout_marginStart="4dp" android:text="Neu" android:textSize="11sp" />
+                android:layout_marginStart="4dp" android:text="@string/btn_new" android:textSize="11sp" />
         </LinearLayout>
 
         <View
@@ -242,7 +242,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginBottom="4dp"
-            android:text="Import Disks"
+            android:text="@string/btn_import_disks"
             android:textSize="12sp" />
 
         <LinearLayout
@@ -267,7 +267,7 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
-                android:text="Sound: OFF"
+                android:text="@string/sound_off"
                 android:textSize="12sp" />
 
         </LinearLayout>

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

@@ -0,0 +1,32 @@
+<resources>
+    <!-- Drawer section headers -->
+    <string name="section_disks">Disketten</string>
+    <string name="section_hero_disks">Helden-Disketten</string>
+
+    <!-- Hero disk buttons -->
+    <string name="hero_1">Held 1</string>
+    <string name="hero_2">Held 2</string>
+    <string name="hero_3">Held 3</string>
+    <string name="btn_new">Neu</string>
+
+    <!-- Bottom drawer buttons -->
+    <string name="btn_import_disks">Disketten importieren</string>
+    <string name="sound_off">Ton: AUS</string>
+    <string name="sound_on">Ton: AN</string>
+
+    <!-- Disk picker -->
+    <string name="picker_title">SCHWUM-Disketten auswählen</string>
+
+    <!-- Load-order warning toast -->
+    <string name="load_a_first">%1$s zuerst laden — %2$s setzt dort fort</string>
+
+    <!-- Hero disk creation dialog -->
+    <string name="replace_disk_title">Diskette ersetzen?</string>
+    <string name="replace_disk_msg">%1$s existiert bereits. Alle gespeicherten Daten gehen verloren.</string>
+    <string name="replace_disk_confirm">Ersetzen</string>
+    <string name="cancel">Abbrechen</string>
+
+    <!-- Hero disk creation log -->
+    <string name="hero_disk_created">Erstellt: %1$s</string>
+    <string name="hero_disk_create_failed">Fehler beim Erstellen: %1$s</string>
+</resources>

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

@@ -1,3 +1,34 @@
 <resources>
     <string name="app_name">SchwertUndMagieOnPebbleCompanionApp</string>
-</resources>
+
+    <!-- Drawer section headers -->
+    <string name="section_disks">Disks</string>
+    <string name="section_hero_disks">Hero Disks</string>
+
+    <!-- Hero disk buttons -->
+    <string name="hero_1">Hero 1</string>
+    <string name="hero_2">Hero 2</string>
+    <string name="hero_3">Hero 3</string>
+    <string name="btn_new">New</string>
+
+    <!-- Bottom drawer buttons -->
+    <string name="btn_import_disks">Import Disks</string>
+    <string name="sound_off">Sound: OFF</string>
+    <string name="sound_on">Sound: ON</string>
+
+    <!-- Disk picker -->
+    <string name="picker_title">Select SCHWUM disk images</string>
+
+    <!-- Load-order warning toast -->
+    <string name="load_a_first">Load %1$s first — %2$s continues from where it left off</string>
+
+    <!-- Hero disk creation dialog -->
+    <string name="replace_disk_title">Replace disk?</string>
+    <string name="replace_disk_msg">%1$s already exists. All saved data will be lost.</string>
+    <string name="replace_disk_confirm">Replace</string>
+    <string name="cancel">Cancel</string>
+
+    <!-- Hero disk creation log -->
+    <string name="hero_disk_created">Created: %1$s</string>
+    <string name="hero_disk_create_failed">Failed to create: %1$s</string>
+</resources>