スキャナ実装いろいろ

component/scanner/src/main/res/layout/activity_scanner_manager.xml

@@ -7,4 +7,12 @@
     android:layout_height="match_parent"
     tools:context=".ScannerManagerActivity">
 
+    <Button
+        android:id="@+id/button_start_scan"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>