diff --git a/app/src/main/java/com/hippo/ehviewer/ui/GalleryActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/GalleryActivity.java
index c64f4a4cb..6bf470122 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/GalleryActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/GalleryActivity.java
@@ -36,6 +36,7 @@ import android.view.View;
 import android.view.WindowManager;
 import android.webkit.MimeTypeMap;
 import android.widget.FrameLayout;
+import android.widget.SeekBar;
 import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -53,12 +54,12 @@ import com.hippo.ehviewer.gallery.gl.GalleryPageView;
 import com.hippo.ehviewer.gallery.gl.GalleryView;
 import com.hippo.ehviewer.gallery.gl.ImageView;
 import com.hippo.ehviewer.widget.GalleryGuideView;
+import com.hippo.ehviewer.widget.ReversibleSeekBar;
 import com.hippo.gl.glrenderer.ImageTexture;
 import com.hippo.gl.view.GLRootView;
 import com.hippo.image.Image;
 import com.hippo.unifile.UniFile;
 import com.hippo.util.SystemUiHelper;
-import com.hippo.widget.Slider;
 import com.hippo.yorozuya.AnimationUtils;
 import com.hippo.yorozuya.ConcurrentPool;
 import com.hippo.yorozuya.SimpleAnimatorListener;
@@ -68,7 +69,7 @@ import com.hippo.yorozuya.ViewUtils;
 import java.io.File;
 
 public class GalleryActivity extends EhActivity
-        implements GalleryProviderListener, Slider.OnSetProgressListener,
+        implements GalleryProviderListener, SeekBar.OnSeekBarChangeListener,
         GalleryView.Listener {
 
     public static final String ACTION_DIR = "dir";
@@ -107,13 +108,13 @@ public class GalleryActivity extends EhActivity
     @Nullable
     private View mBattery;
     @Nullable
-    private View mSliderPanel;
+    private View mSeekBarPanel;
     @Nullable
     private TextView mLeftText;
     @Nullable
     private TextView mRightText;
     @Nullable
-    private Slider mSlider;
+    private ReversibleSeekBar mSeekBar;
 
     private int mLayoutMode;
     private int mSize;
@@ -124,8 +125,8 @@ public class GalleryActivity extends EhActivity
     private final Runnable mRequestLayoutSliderTask = new Runnable() {
         @Override
         public void run() {
-            if (mSliderPanel != null) {
-                mSliderPanel.requestLayout();
+            if (mSeekBarPanel != null) {
+                mSeekBarPanel.requestLayout();
             }
         }
     };
@@ -133,8 +134,8 @@ public class GalleryActivity extends EhActivity
     private final SimpleAnimatorListener mHideSliderListener = new SimpleAnimatorListener() {
         @Override
         public void onAnimationEnd(Animator animation) {
-            if (mSliderPanel != null) {
-                mSliderPanel.setVisibility(View.INVISIBLE);
+            if (mSeekBarPanel != null) {
+                mSeekBarPanel.setVisibility(View.INVISIBLE);
             }
         }
     };
@@ -142,8 +143,8 @@ public class GalleryActivity extends EhActivity
     private final Runnable mHideSliderRunnable = new Runnable() {
         @Override
         public void run() {
-            if (mSliderPanel != null) {
-                hideSlider(mSliderPanel);
+            if (mSeekBarPanel != null) {
+                hideSlider(mSeekBarPanel);
             }
         }
     };
@@ -259,11 +260,11 @@ public class GalleryActivity extends EhActivity
         mClock.setVisibility(Settings.getShowClock() ? View.VISIBLE : View.GONE);
         mBattery.setVisibility(Settings.getShowBattery() ? View.VISIBLE : View.GONE);
 
-        mSliderPanel = findViewById(R.id.slider_panel);
-        mLeftText = (TextView) mSliderPanel.findViewById(R.id.left);
-        mRightText = (TextView) mSliderPanel.findViewById(R.id.right);
-        mSlider = (Slider) mSliderPanel.findViewById(R.id.slider);
-        mSlider.setOnSetProgressListener(this);
+        mSeekBarPanel = findViewById(R.id.seek_bar_panel);
+        mLeftText = (TextView) mSeekBarPanel.findViewById(R.id.left);
+        mRightText = (TextView) mSeekBarPanel.findViewById(R.id.right);
+        mSeekBar = (ReversibleSeekBar) mSeekBarPanel.findViewById(R.id.seek_bar);
+        mSeekBar.setOnSeekBarChangeListener(this);
 
         mSize = mGalleryProvider.size();
         mCurrentIndex = startPage;
@@ -277,10 +278,10 @@ public class GalleryActivity extends EhActivity
             getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         }
 
-        //if (Settings.getGuideGallery()) {
+        if (Settings.getGuideGallery()) {
             FrameLayout mainLayout = (FrameLayout) ViewUtils.$$(this, R.id.main);
             mainLayout.addView(new GalleryGuideView(this));
-        //}
+        }
     }
 
     @Override
@@ -297,10 +298,10 @@ public class GalleryActivity extends EhActivity
             mGalleryProvider = null;
         }
 
-        mSliderPanel = null;
+        mSeekBarPanel = null;
         mLeftText = null;
         mRightText = null;
-        mSlider = null;
+        mSeekBar = null;
     }
 
     @Override
@@ -429,7 +430,7 @@ public class GalleryActivity extends EhActivity
 
     @SuppressLint("SetTextI18n")
     private void updateSlider() {
-        if (mSlider == null || mRightText == null || mLeftText == null || mSize <= 0 || mCurrentIndex < 0) {
+        if (mSeekBar == null || mRightText == null || mLeftText == null || mSize <= 0 || mCurrentIndex < 0) {
             return;
         }
 
@@ -438,16 +439,16 @@ public class GalleryActivity extends EhActivity
         if (mLayoutMode == GalleryView.LAYOUT_MODE_RIGHT_TO_LEFT) {
             start = mRightText;
             end = mLeftText;
-            mSlider.setReverse(true);
+            mSeekBar.setReverse(true);
         } else {
             start = mLeftText;
             end = mRightText;
-            mSlider.setReverse(false);
+            mSeekBar.setReverse(false);
         }
         start.setText(Integer.toString(mCurrentIndex + 1));
         end.setText(Integer.toString(mSize));
-        mSlider.setRange(1, mSize);
-        mSlider.setProgress(mCurrentIndex + 1);
+        mSeekBar.setMax(mSize - 1);
+        mSeekBar.setProgress(mCurrentIndex);
     }
 
     @Override
@@ -530,21 +531,31 @@ public class GalleryActivity extends EhActivity
     }
 
     @Override
-    public void onSetProgress(Slider slider, int newProgress, int oldProgress,
-            boolean byUser, boolean confirm) {
-        if (confirm && byUser && mGalleryView != null) {
-            mGalleryView.setCurrentPage(newProgress - 1);
+    @SuppressLint("SetTextI18n")
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+        TextView start;
+        if (mLayoutMode == GalleryView.LAYOUT_MODE_RIGHT_TO_LEFT) {
+            start = mRightText;
+        } else {
+            start = mLeftText;
+        }
+        if (fromUser && null != start) {
+            start.setText(Integer.toString(progress + 1));
         }
     }
 
     @Override
-    public void onFingerDown() {
+    public void onStartTrackingTouch(SeekBar seekBar) {
         SimpleHandler.getInstance().removeCallbacks(mHideSliderRunnable);
     }
 
     @Override
-    public void onFingerUp() {
+    public void onStopTrackingTouch(SeekBar seekBar) {
         SimpleHandler.getInstance().postDelayed(mHideSliderRunnable, HIDE_SLIDER_DELAY);
+        int progress = seekBar.getProgress();
+        if (progress != mCurrentIndex && null != mGalleryView) {
+            mGalleryView.setCurrentPage(progress);
+        }
     }
 
     @Override
@@ -786,16 +797,16 @@ public class GalleryActivity extends EhActivity
         }
 
         private void onTapSliderArea() {
-            if (mSliderPanel == null || mSize <= 0 || mCurrentIndex < 0) {
+            if (mSeekBarPanel == null || mSize <= 0 || mCurrentIndex < 0) {
                 return;
             }
 
             SimpleHandler.getInstance().removeCallbacks(mHideSliderRunnable);
 
-            if (mSliderPanel.getVisibility() == View.VISIBLE) {
-                hideSlider(mSliderPanel);
+            if (mSeekBarPanel.getVisibility() == View.VISIBLE) {
+                hideSlider(mSeekBarPanel);
             } else {
-                showSlider(mSliderPanel);
+                showSlider(mSeekBarPanel);
                 SimpleHandler.getInstance().postDelayed(mHideSliderRunnable, HIDE_SLIDER_DELAY);
             }
         }
diff --git a/app/src/main/java/com/hippo/ehviewer/widget/ReversibleSeekBar.java b/app/src/main/java/com/hippo/ehviewer/widget/ReversibleSeekBar.java
new file mode 100644
index 000000000..01a710fa8
--- /dev/null
+++ b/app/src/main/java/com/hippo/ehviewer/widget/ReversibleSeekBar.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2016 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.ehviewer.widget;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.support.v7.widget.AppCompatSeekBar;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+public class ReversibleSeekBar extends AppCompatSeekBar {
+
+    private boolean mReverse;
+
+    public ReversibleSeekBar(Context context) {
+        super(context);
+    }
+
+    public ReversibleSeekBar(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ReversibleSeekBar(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public void setReverse(boolean reverse) {
+        mReverse = reverse;
+        invalidate();
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        int saveCount = 0;
+        if (mReverse) {
+            saveCount = canvas.save();
+            float px = this.getWidth() / 2.0f;
+            float py = this.getHeight() / 2.0f;
+            canvas.scale(-1, 1, px, py);
+        }
+        super.draw(canvas);
+        if (mReverse) {
+            canvas.restoreToCount(saveCount);
+        }
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        float x = 0.0f, y = 0.0f;
+        if (mReverse) {
+            x = event.getX();
+            y = event.getY();
+            event.setLocation(getWidth() - x, y);
+        }
+        boolean result = super.onTouchEvent(event);
+        if (mReverse) {
+            event.setLocation(x, y);
+        }
+        return result;
+    }
+}
diff --git a/app/src/main/java/com/hippo/ehviewer/widget/SliderPanel.java b/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
similarity index 69%
rename from app/src/main/java/com/hippo/ehviewer/widget/SliderPanel.java
rename to app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
index 328d3a28c..674d14dc4 100644
--- a/app/src/main/java/com/hippo/ehviewer/widget/SliderPanel.java
+++ b/app/src/main/java/com/hippo/ehviewer/widget/SeekBarPanel.java
@@ -22,48 +22,47 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.LinearLayout;
+import android.widget.SeekBar;
 
-import com.hippo.widget.Slider;
+public class SeekBarPanel extends LinearLayout {
 
-public class SliderPanel extends LinearLayout {
+    private SeekBar mSeekBar;
 
-    private Slider mSlider;
-
-    public SliderPanel(Context context) {
+    public SeekBarPanel(Context context) {
         super(context);
     }
 
-    public SliderPanel(Context context, AttributeSet attrs) {
+    public SeekBarPanel(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 
-    public SliderPanel(Context context, AttributeSet attrs, int defStyleAttr) {
+    public SeekBarPanel(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
     }
 
     @Override
     public void onViewAdded(View child) {
-        if (child instanceof Slider) {
-            mSlider = (Slider) child;
+        if (child instanceof SeekBar) {
+            mSeekBar = (SeekBar) child;
         }
     }
 
     @Override
     public void onViewRemoved(View child) {
-        if (child == mSlider) {
-            mSlider = null;
+        if (child == mSeekBar) {
+            mSeekBar = null;
         }
     }
 
     @Override
     public boolean onTouchEvent(@NonNull MotionEvent event) {
-        if (mSlider == null) {
+        if (mSeekBar == null) {
             return super.onTouchEvent(event);
         } else {
-            final float offsetX = -mSlider.getLeft();
-            final float offsetY = -mSlider.getTop();
+            final float offsetX = -mSeekBar.getLeft();
+            final float offsetY = -mSeekBar.getTop();
             event.offsetLocation(offsetX, offsetY);
-            mSlider.onTouchEvent(event);
+            mSeekBar.onTouchEvent(event);
             event.offsetLocation(-offsetX, -offsetY);
             return true;
         }
diff --git a/app/src/main/res/layout/activity_gallery.xml b/app/src/main/res/layout/activity_gallery.xml
index 41e641720..ec022a10f 100644
--- a/app/src/main/res/layout/activity_gallery.xml
+++ b/app/src/main/res/layout/activity_gallery.xml
@@ -47,8 +47,8 @@
         app:color="@color/secondary_text_dark"
         app:warningColor="@color/red_500"/>
 
-    <com.hippo.ehviewer.widget.SliderPanel
-        android:id="@+id/slider_panel"
+    <com.hippo.ehviewer.widget.SeekBarPanel
+        android:id="@+id/seek_bar_panel"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="bottom"
@@ -65,9 +65,8 @@
             android:layout_gravity="center_vertical"
             android:gravity="center_horizontal"/>
 
-        <com.hippo.widget.Slider
-            android:id="@+id/slider"
-            style="@style/Slider.Dark"
+        <com.hippo.ehviewer.widget.ReversibleSeekBar
+            android:id="@+id/seek_bar"
             android:layout_width="0dp"
             android:layout_height="48dp"
             android:layout_weight="1"
@@ -80,5 +79,5 @@
             android:layout_gravity="center_vertical"
             android:gravity="center_horizontal"/>
 
-    </com.hippo.ehviewer.widget.SliderPanel>
+    </com.hippo.ehviewer.widget.SeekBarPanel>
 </FrameLayout>
diff --git a/app/src/main/res/layout/scene_select_site.xml b/app/src/main/res/layout/scene_select_site.xml
index 45da49e3e..466501d2b 100644
--- a/app/src/main/res/layout/scene_select_site.xml
+++ b/app/src/main/res/layout/scene_select_site.xml
@@ -25,7 +25,8 @@
     <ScrollView
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:layout_weight="1">
+        android:layout_weight="1"
+        android:fillViewport="true">
 
         <LinearLayout
             android:layout_width="match_parent"
@@ -38,6 +39,11 @@
                 android:textAppearance="@style/TextAppearance.AppCompat.Title"
                 android:text="@string/select_scene"/>
 
+            <Space
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                android:layout_weight="1"/>
+
             <RadioGroup
                 android:id="@+id/radio_group"
                 android:layout_width="wrap_content"
@@ -60,6 +66,11 @@
 
             </RadioGroup>
 
+            <Space
+                android:layout_width="0dp"
+                android:layout_height="0dp"
+                android:layout_weight="1"/>
+
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"