diff --git a/app/src/main/java/jp/juggler/screenshotbutton/MyService.kt b/app/src/main/java/jp/juggler/screenshotbutton/MyService.kt
index cc29bee..6a3c3f2 100755
--- a/app/src/main/java/jp/juggler/screenshotbutton/MyService.kt
+++ b/app/src/main/java/jp/juggler/screenshotbutton/MyService.kt
@@ -97,6 +97,7 @@ class MyService : Service(), CoroutineScope, View.OnClickListener, View.OnTouchL
             } else {
                 @Suppress("DEPRECATION")
                 WindowManager.LayoutParams.TYPE_SYSTEM_ALERT
+                // TYPE_SYSTEM_OVERLAYはロック画面にもViewを表示できますが、タッチイベントを取得できません
             },
             WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or
                     // WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH or
diff --git a/app/src/main/res/layout/act_viewer.xml b/app/src/main/res/layout/act_viewer.xml
index 0d50ec9..06e0871 100755
--- a/app/src/main/res/layout/act_viewer.xml
+++ b/app/src/main/res/layout/act_viewer.xml
@@ -5,8 +5,6 @@
     android:layout_height="match_parent"
     tools:context=".ActViewer"
     android:orientation="vertical"
-    android:padding="8dp"
-
     >
 
     <LinearLayout
@@ -14,6 +12,7 @@
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         android:gravity="top"
+        android:padding="8dp"
         >
         <ImageButton
             android:id="@+id/btnBack"
@@ -63,8 +62,6 @@
         android:id="@+id/ivImage"
         android:importantForAccessibility="no"
         android:scaleType="fitCenter"
-
         android:padding="4dp"
         />
-
 </LinearLayout>
\ No newline at end of file