feat: added code scanning

mobile/src/main/AndroidManifest.xml

@@ -13,12 +13,15 @@
         android:theme="@style/Base.Theme.OmniCards">
         <activity
             android:name=".ShowCardActivity"
+            android:screenOrientation="portrait"
             android:exported="false" />
         <activity
             android:name=".AddCardActivity"
+            android:screenOrientation="portrait"
             android:exported="false" />
         <activity
             android:name=".MainActivity"
+            android:screenOrientation="portrait"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

mobile/src/main/java/ru/omni_devel/cards/AddCardActivity.kt

@@ -10,10 +10,25 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import com.google.zxing.BarcodeFormat
+import com.journeyapps.barcodescanner.ScanContract
+import com.journeyapps.barcodescanner.ScanOptions
 
 class AddCardActivity : AppCompatActivity() {
     private lateinit var db: DbHelper
 
+    private val barcodeLauncher = registerForActivityResult(ScanContract()) { result ->
+        if (result.contents != null) {
+            val codeTypes = BarcodeFormat.entries.map { it.name }
+            val codeTypeIndex = codeTypes.indexOf(result.formatName)
+
+            if (codeTypeIndex >= 0) {
+                findViewById<Spinner>(R.id.cardCodeTypeSelector).setSelection(codeTypeIndex)
+            }
+
+            findViewById<EditText>(R.id.cardValueInput).setText(result.contents)
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
@@ -28,6 +43,7 @@ class AddCardActivity : AppCompatActivity() {
 
         val cardNameInput: EditText = findViewById(R.id.cardNameInput)
         val cardValueInput: EditText = findViewById(R.id.cardValueInput)
+        val scanCodeButton: Button = findViewById(R.id.scanCodeButton)
         val cardCodeTypeSelector: Spinner = findViewById(R.id.cardCodeTypeSelector)
         val saveCardButton: Button = findViewById(R.id.saveCardButton)
 
@@ -36,6 +52,14 @@ class AddCardActivity : AppCompatActivity() {
         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
         cardCodeTypeSelector.adapter = adapter
 
+        scanCodeButton.setOnClickListener {
+            val options = ScanOptions()
+            options.setPrompt("Scan code")
+            options.setBeepEnabled(false)
+            options.setOrientationLocked(false)
+            barcodeLauncher.launch(options)
+        }
+
         saveCardButton.setOnClickListener {
             val cardName = cardNameInput.text.toString()
             val cardValue = cardValueInput.text.toString()

mobile/src/main/res/layout/activity_add_card.xml

@@ -50,13 +50,26 @@
             android:hint="Card name"
             android:inputType="text" />
 
-        <EditText
-            android:id="@+id/cardValueInput"
+        <LinearLayout
             android:layout_width="match_parent"
-            android:layout_height="46dp"
-            android:ems="10"
-            android:hint="Card value"
-            android:inputType="text" />
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <EditText
+                android:id="@+id/cardValueInput"
+                android:layout_width="259dp"
+                android:layout_height="46dp"
+                android:ems="10"
+                android:hint="Card value"
+                android:inputType="text" />
+
+            <Button
+                android:id="@+id/scanCodeButton"
+                android:layout_width="match_parent"
+                android:layout_height="38dp"
+                android:text="Scan" />
+
+        </LinearLayout>
 
         <Spinner
             android:id="@+id/cardCodeTypeSelector"