diff --git a/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java b/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
index fb2518c70..d5ba675aa 100644
--- a/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
+++ b/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
@@ -21,10 +21,12 @@ import android.graphics.Rect;
 import android.support.annotation.NonNull;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
-import android.view.View;
 import android.widget.LinearLayout;
 import android.widget.SeekBar;
 
+import com.hippo.ehviewer.R;
+import com.hippo.yorozuya.ViewUtils;
+
 public class SeekBarPanel extends LinearLayout {
 
     private SeekBar mSeekBar;
@@ -42,17 +44,9 @@ public class SeekBarPanel extends LinearLayout {
     }
 
     @Override
-    public void onViewAdded(View child) {
-        if (child instanceof SeekBar) {
-            mSeekBar = (SeekBar) child;
-        }
-    }
-
-    @Override
-    public void onViewRemoved(View child) {
-        if (child == mSeekBar) {
-            mSeekBar = null;
-        }
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        mSeekBar = (SeekBar) ViewUtils.$$(this, R.id.seek_bar);
     }
 
     @Override
diff --git a/app/src/main/res/layout/activity_gallery.xml b/app/src/main/res/layout/activity_gallery.xml
index b93b8730a..460b4fcb4 100644
--- a/app/src/main/res/layout/activity_gallery.xml
+++ b/app/src/main/res/layout/activity_gallery.xml
@@ -66,12 +66,18 @@
             android:layout_gravity="center_vertical"
             android:gravity="center_horizontal"/>
 
-        <com.hippo.ehviewer.widget.ReversibleSeekBar
-            android:id="@+id/seek_bar"
+        <FrameLayout
             android:layout_width="0dp"
             android:layout_height="48dp"
-            android:layout_weight="1"
-            android:layout_gravity="center_horizontal"/>
+            android:layout_weight="1">
+
+            <com.hippo.ehviewer.widget.ReversibleSeekBar
+                android:id="@+id/seek_bar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center_vertical"/>
+
+        </FrameLayout>
 
         <TextView
             android:id="@+id/right"