ToolBar実装 WIP

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

@@ -2,9 +2,23 @@
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/main"
+    android:theme="@style/Theme.Lacerta"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <com.google.android.material.appbar.MaterialToolbar
+        android:id="@+id/top_toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/colorPrimaryContainer"
+        app:titleTextColor="@color/colorOnPrimaryContainer"
+        app:title="Preview"
+        android:minHeight="?attr/actionBarSize"
+        android:theme="?attr/actionBarTheme"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <ImageView
         android:id="@+id/selected_image"
         android:layout_width="match_parent"
@@ -14,7 +28,7 @@
         app:layout_constraintBottom_toTopOf="@+id/horizontal_scroll"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@id/top_toolbar" />
 
     <HorizontalScrollView
         android:id="@+id/horizontal_scroll"