diff --git a/component/scanner/build.gradle b/component/scanner/build.gradle
index 735535ff..defa4b6e 100644
--- a/component/scanner/build.gradle
+++ b/component/scanner/build.gradle
@@ -30,6 +30,8 @@ dependencies {
 
     implementation libs.androidx.appcompat
     implementation libs.com.google.android.material
+    implementation libs.androidx.activity
+    implementation libs.androidx.constraintlayout
     testImplementation libs.junit
     androidTestImplementation libs.androidx.test.ext.junit
     androidTestImplementation libs.androidx.test.espresso.core
diff --git a/component/scanner/src/main/AndroidManifest.xml b/component/scanner/src/main/AndroidManifest.xml
index a5918e68..74cc7c29 100644
--- a/component/scanner/src/main/AndroidManifest.xml
+++ b/component/scanner/src/main/AndroidManifest.xml
@@ -1,4 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <application>
+        <activity
+            android:name=".ScannerManagerActivity"
+            android:exported="false" />
+    </application>
+
 </manifest>
\ No newline at end of file
diff --git a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
new file mode 100644
index 00000000..f5109892
--- /dev/null
+++ b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
@@ -0,0 +1,24 @@
+package one.nem.lacerta.component.scanner;
+
+import android.os.Bundle;
+
+import androidx.activity.EdgeToEdge;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
+public class ScannerManagerActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        EdgeToEdge.enable(this);
+        setContentView(R.layout.activity_scanner_manager);
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
+            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
+            return insets;
+        });
+    }
+}
\ No newline at end of file
diff --git a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerFragment.java b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerFragment.java
index f50332ca..7203e691 100644
--- a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerFragment.java
+++ b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerFragment.java
@@ -31,24 +31,7 @@ public class ScannerManagerFragment extends Fragment {
     @Inject
     LacertaVcsFactory vcsFactory;
 
-    DocumentScanner documentScanner = new DocumentScanner(
-            requireActivity(),
-            (croppedImage) -> {
-                // TODO-rca: 画像を保存する
-                return null;
-            },
-            (error) -> {
-                // TODO-rca: エラー処理
-                return null;
-            },
-            () -> {
-                // TODO-rca: キャンセル処理
-                return null;
-            },
-            null,
-            null,
-            null
-    );
+    DocumentScanner documentScanner;
 
     private static final boolean DEFAULT_SINGLE_PAGE = false;
     private boolean singlePage;
@@ -79,6 +62,25 @@ public class ScannerManagerFragment extends Fragment {
         if (getArguments() != null) {
             singlePage = getArguments().getBoolean("singlePage", DEFAULT_SINGLE_PAGE);
         }
+
+        documentScanner = new DocumentScanner(
+                requireActivity(),
+                (croppedImage) -> {
+                    // TODO-rca: 画像を保存する
+                    return null;
+                },
+                (error) -> {
+                    // TODO-rca: エラー処理
+                    return null;
+                },
+                () -> {
+                    // TODO-rca: キャンセル処理
+                    return null;
+                },
+                null,
+                null,
+                null
+        );
     }
 
     @Override
@@ -87,11 +89,11 @@ public class ScannerManagerFragment extends Fragment {
         // Inflate the layout for this fragment
         View view = inflater.inflate(R.layout.fragment_scanner_manager, container, false);
 
-        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
-                ViewGroup.LayoutParams.MATCH_PARENT,
-                ViewGroup.LayoutParams.MATCH_PARENT
-        );
-        view.setLayoutParams(layoutParams);
+//        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
+//                ViewGroup.LayoutParams.MATCH_PARENT,
+//                ViewGroup.LayoutParams.MATCH_PARENT
+//        );
+//        view.setLayoutParams(layoutParams);
 
         return view;
     }
@@ -104,7 +106,9 @@ public class ScannerManagerFragment extends Fragment {
         logger.debug(TAG, "called");
 
         view.findViewById(R.id.button_start_scan).setOnClickListener(v -> {
-            documentScanner.startScan();
+            if (documentScanner != null) {
+                documentScanner.startScan();
+            }
         });
     }
 }
\ No newline at end of file
diff --git a/component/scanner/src/main/res/layout/activity_scanner_manager.xml b/component/scanner/src/main/res/layout/activity_scanner_manager.xml
new file mode 100644
index 00000000..1b0b261a
--- /dev/null
+++ b/component/scanner/src/main/res/layout/activity_scanner_manager.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ScannerManagerActivity">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file