diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/PaddingConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/PaddingConfigDialog.kt
index c1a9e5e8f..0d16229b0 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/PaddingConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/PaddingConfigDialog.kt
@@ -5,16 +5,13 @@ import android.util.DisplayMetrics
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.SeekBar
 import androidx.fragment.app.DialogFragment
 import io.legado.app.R
 import io.legado.app.constant.EventBus
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.ui.book.read.Help
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.progressAdd
 import kotlinx.android.synthetic.main.dialog_read_padding.*
-import org.jetbrains.anko.sdk27.listeners.onClick
 
 class PaddingConfigDialog : DialogFragment() {
 
@@ -48,98 +45,29 @@ class PaddingConfigDialog : DialogFragment() {
     }
 
     private fun initData() = with(ReadBookConfig.getConfig()) {
-        seek_padding_top.progress = paddingTop
-        seek_padding_bottom.progress = paddingBottom
-        seek_padding_left.progress = paddingLeft
-        seek_padding_right.progress = paddingRight
-        tv_padding_top.text = paddingTop.toString()
-        tv_padding_bottom.text = paddingBottom.toString()
-        tv_padding_left.text = paddingLeft.toString()
-        tv_padding_right.text = paddingRight.toString()
+        dsb_padding_top.progress = paddingTop
+        dsb_padding_bottom.progress = paddingBottom
+        dsb_padding_left.progress = paddingLeft
+        dsb_padding_right.progress = paddingRight
     }
 
     private fun initView() = with(ReadBookConfig.getConfig()) {
-        iv_padding_top_add.onClick {
-            seek_padding_top.progressAdd(1)
+        dsb_padding_top.onChanged = {
+            paddingTop = it
             postEvent(EventBus.UP_CONFIG, true)
         }
-        iv_padding_top_remove.onClick {
-            seek_padding_top.progressAdd(-1)
+        dsb_padding_bottom.onChanged = {
+            paddingBottom = it
             postEvent(EventBus.UP_CONFIG, true)
         }
-        iv_padding_bottom_add.onClick {
-            seek_padding_bottom.progressAdd(1)
+        dsb_padding_left.onChanged = {
+            paddingLeft = it
             postEvent(EventBus.UP_CONFIG, true)
         }
-        iv_padding_bottom_remove.onClick {
-            seek_padding_bottom.progressAdd(-1)
+        dsb_padding_right.onChanged = {
+            paddingRight = it
             postEvent(EventBus.UP_CONFIG, true)
         }
-        iv_padding_left_add.onClick {
-            seek_padding_left.progressAdd(1)
-            postEvent(EventBus.UP_CONFIG, true)
-        }
-        iv_padding_left_remove.onClick {
-            seek_padding_left.progressAdd(-1)
-            postEvent(EventBus.UP_CONFIG, true)
-        }
-        iv_padding_right_add.onClick {
-            seek_padding_right.progressAdd(1)
-            postEvent(EventBus.UP_CONFIG, true)
-        }
-        iv_padding_right_remove.onClick {
-            seek_padding_right.progressAdd(-1)
-            postEvent(EventBus.UP_CONFIG, true)
-        }
-
-        seek_padding_top.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
-            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
-                paddingTop = progress
-                tv_padding_top.text = paddingTop.toString()
-            }
-
-            override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
-
-            override fun onStopTrackingTouch(seekBar: SeekBar?) {
-                postEvent(EventBus.UP_CONFIG, true)
-            }
-        })
-        seek_padding_bottom.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
-            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
-                paddingBottom = progress
-                tv_padding_bottom.text = paddingBottom.toString()
-            }
-
-            override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
-
-            override fun onStopTrackingTouch(seekBar: SeekBar?) {
-                postEvent(EventBus.UP_CONFIG, true)
-            }
-        })
-        seek_padding_left.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
-            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
-                paddingLeft = progress
-                tv_padding_left.text = paddingLeft.toString()
-            }
-
-            override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
-
-            override fun onStopTrackingTouch(seekBar: SeekBar?) {
-                postEvent(EventBus.UP_CONFIG, true)
-            }
-        })
-        seek_padding_right.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
-            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
-                paddingRight = progress
-                tv_padding_right.text = paddingRight.toString()
-            }
-
-            override fun onStartTrackingTouch(seekBar: SeekBar?) = Unit
-
-            override fun onStopTrackingTouch(seekBar: SeekBar?) {
-                postEvent(EventBus.UP_CONFIG, true)
-            }
-        })
     }
 
 }
diff --git a/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt b/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
index 53ca79375..9d956def5 100644
--- a/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
@@ -14,10 +14,18 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 class DetailSeekBar(context: Context, attrs: AttributeSet?) : LinearLayoutCompat(context, attrs),
     SeekBar.OnSeekBarChangeListener {
 
-    private var valueFormat: String? = null
-    private var onChanged: ((progress: Int) -> Unit)? = null
-    val progress: Int
+    var valueFormat: ((progress: Int) -> String)? = null
+    var onChanged: ((progress: Int) -> Unit)? = null
+    var progress: Int
         get() = seek_bar.progress
+        set(value) {
+            seek_bar.progress = value
+        }
+    var max: Int
+        get() = seek_bar.max
+        set(value) {
+            seek_bar.max = value
+        }
 
     init {
         gravity = Gravity.CENTER_VERTICAL
@@ -25,6 +33,7 @@ class DetailSeekBar(context: Context, attrs: AttributeSet?) : LinearLayoutCompat
 
         val typedArray = context.obtainStyledAttributes(attrs, R.styleable.DetailSeekBar)
         tv_seek_title.text = typedArray.getText(R.styleable.DetailSeekBar_title)
+        seek_bar.max = typedArray.getInteger(R.styleable.DetailSeekBar_max, 0)
         typedArray.recycle()
 
         iv_seek_add.onClick {
@@ -40,7 +49,7 @@ class DetailSeekBar(context: Context, attrs: AttributeSet?) : LinearLayoutCompat
 
     private fun upValue(progress: Int = seek_bar.progress) {
         valueFormat?.let {
-            tv_seek_value.text = String.format(it, progress)
+            tv_seek_value.text = it.invoke(progress)
         } ?: let {
             tv_seek_value.text = progress.toString()
         }
diff --git a/app/src/main/res/layout/dialog_read_padding.xml b/app/src/main/res/layout/dialog_read_padding.xml
index 22bb10e50..7b878a442 100644
--- a/app/src/main/res/layout/dialog_read_padding.xml
+++ b/app/src/main/res/layout/dialog_read_padding.xml
@@ -1,206 +1,38 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout 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:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@color/background"
     android:padding="8dp"
     android:orientation="vertical">
 
-    <LinearLayout
-        android:id="@+id/ll_padding_top"
+    <io.legado.app.ui.widget.DetailSeekBar
+        android:id="@+id/dsb_padding_top"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:gravity="center"
-        android:orientation="horizontal"
-        android:paddingLeft="10dp"
-        android:paddingRight="10dp"
-        app:layout_constraintTop_toBottomOf="@+id/tv_text_bold">
+        app:title="@string/padding_top"
+        app:max="100" />
 
-        <TextView
-            android:layout_width="60dp"
-            android:layout_height="wrap_content"
-            android:text="@string/padding_top" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_top_remove"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_remove"
-            android:tint="@color/tv_text_default" />
-
-        <io.legado.app.lib.theme.view.ATESeekBar
-            android:id="@+id/seek_padding_top"
-            android:layout_width="0dp"
-            android:layout_height="25dp"
-            android:layout_gravity="center_vertical"
-            android:layout_weight="4"
-            android:max="100" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_top_add"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_add"
-            android:tint="@color/tv_text_default" />
-
-        <TextView
-            android:id="@+id/tv_padding_top"
-            android:layout_width="40dp"
-            android:layout_height="wrap_content"
-            android:gravity="right"
-            tools:ignore="RtlHardcoded" />
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:id="@+id/ll_padding_bottom"
+    <io.legado.app.ui.widget.DetailSeekBar
+        android:id="@+id/dsb_padding_bottom"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="10dp"
-        android:gravity="center"
-        android:orientation="horizontal"
-        android:paddingLeft="10dp"
-        android:paddingRight="10dp"
-        app:layout_constraintTop_toBottomOf="@+id/tv_text_bold">
-
-        <TextView
-            android:layout_width="60dp"
-            android:layout_height="wrap_content"
-            android:text="@string/padding_bottom" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_bottom_remove"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_remove"
-            android:tint="@color/tv_text_default" />
-
-        <io.legado.app.lib.theme.view.ATESeekBar
-            android:id="@+id/seek_padding_bottom"
-            android:layout_width="0dp"
-            android:layout_height="25dp"
-            android:layout_gravity="center_vertical"
-            android:layout_weight="4"
-            android:max="100" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_bottom_add"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_add"
-            android:tint="@color/tv_text_default" />
-
-        <TextView
-            android:id="@+id/tv_padding_bottom"
-            android:layout_width="40dp"
-            android:layout_height="wrap_content"
-            android:gravity="right"
-            tools:ignore="RtlHardcoded" />
-
-    </LinearLayout>
+        app:title="@string/padding_bottom"
+        app:max="100" />
 
-    <LinearLayout
-        android:id="@+id/ll_padding_left"
+    <io.legado.app.ui.widget.DetailSeekBar
+        android:id="@+id/dsb_padding_left"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="10dp"
-        android:gravity="center"
-        android:orientation="horizontal"
-        android:paddingLeft="10dp"
-        android:paddingRight="10dp"
-        app:layout_constraintTop_toBottomOf="@+id/tv_text_bold">
+        app:title="@string/padding_left"
+        app:max="100" />
 
-        <TextView
-            android:layout_width="60dp"
-            android:layout_height="wrap_content"
-            android:text="@string/padding_left" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_left_remove"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_remove"
-            android:tint="@color/tv_text_default" />
-
-        <io.legado.app.lib.theme.view.ATESeekBar
-            android:id="@+id/seek_padding_left"
-            android:layout_width="0dp"
-            android:layout_height="25dp"
-            android:layout_gravity="center_vertical"
-            android:layout_weight="4"
-            android:max="100" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_left_add"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_add"
-            android:tint="@color/tv_text_default" />
-
-        <TextView
-            android:id="@+id/tv_padding_left"
-            android:layout_width="40dp"
-            android:layout_height="wrap_content"
-            android:gravity="right"
-            tools:ignore="RtlHardcoded" />
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:id="@+id/ll_padding_right"
+    <io.legado.app.ui.widget.DetailSeekBar
+        android:id="@+id/dsb_padding_right"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginTop="10dp"
-        android:gravity="center"
-        android:orientation="horizontal"
-        android:paddingLeft="10dp"
-        android:paddingRight="10dp"
-        app:layout_constraintTop_toBottomOf="@+id/tv_text_bold">
-
-        <TextView
-            android:layout_width="60dp"
-            android:layout_height="wrap_content"
-            android:text="@string/padding_right" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_right_remove"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_remove"
-            android:tint="@color/tv_text_default" />
-
-        <io.legado.app.lib.theme.view.ATESeekBar
-            android:id="@+id/seek_padding_right"
-            android:layout_width="0dp"
-            android:layout_height="25dp"
-            android:layout_gravity="center_vertical"
-            android:layout_weight="4"
-            android:max="100" />
-
-        <androidx.appcompat.widget.AppCompatImageView
-            android:id="@+id/iv_padding_right_add"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
-            android:src="@drawable/ic_add"
-            android:tint="@color/tv_text_default" />
-
-        <TextView
-            android:id="@+id/tv_padding_right"
-            android:layout_width="40dp"
-            android:layout_height="wrap_content"
-            android:gravity="right"
-            tools:ignore="RtlHardcoded" />
-
-    </LinearLayout>
+        app:title="@string/padding_right"
+        app:max="100" />
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/view_detail_seek_bar.xml b/app/src/main/res/layout/view_detail_seek_bar.xml
index 1af90c9e0..3bfed2f06 100644
--- a/app/src/main/res/layout/view_detail_seek_bar.xml
+++ b/app/src/main/res/layout/view_detail_seek_bar.xml
@@ -10,8 +10,9 @@
 
     <TextView
         android:id="@+id/tv_seek_title"
-        android:layout_width="40dp"
+        android:layout_width="50dp"
         android:layout_height="wrap_content"
+        android:singleLine="true"
         android:text="@string/text_letter_spacing" />
 
     <androidx.appcompat.widget.AppCompatImageView
@@ -43,6 +44,7 @@
         android:layout_width="40dp"
         android:layout_height="wrap_content"
         android:gravity="right"
+        android:singleLine="true"
         tools:ignore="RtlHardcoded" />
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/attrs.xml b/app/src/main/res/values/attrs.xml
index e3ca97f5a..485e8ef20 100644
--- a/app/src/main/res/values/attrs.xml
+++ b/app/src/main/res/values/attrs.xml
@@ -67,6 +67,7 @@
 
     <declare-styleable name="DetailSeekBar">
         <attr name="title" format="string" />
+        <attr name="max" format="integer" />
     </declare-styleable>
 
     <declare-styleable name="SmoothCheckBox">