diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
index be737de2d..332eb23df 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
@@ -16,7 +16,6 @@ import android.view.animation.Animation
 import android.widget.FrameLayout
 import android.widget.SeekBar
 import androidx.appcompat.widget.PopupMenu
-import androidx.constraintlayout.widget.ConstraintSet
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
 import io.legado.app.R
@@ -523,13 +522,13 @@ class ReadMenu @JvmOverloads constructor(
 
     private fun upBrightnessVwPos() {
         if (AppConfig.brightnessVwPos) {
-            binding.root.modify()
-                .clear(R.id.ll_brightness, ConstraintSet.LEFT)
+            binding.root.modifyBegin()
+                .clear(R.id.ll_brightness, ConstraintModify.Anchor.LEFT)
                 .rightToRightOf(R.id.ll_brightness, R.id.vw_menu_root)
                 .commit()
         } else {
-            binding.root.modify()
-                .clear(R.id.ll_brightness, ConstraintSet.RIGHT)
+            binding.root.modifyBegin()
+                .clear(R.id.ll_brightness, ConstraintModify.Anchor.RIGHT)
                 .leftToLeftOf(R.id.ll_brightness, R.id.vw_menu_root)
                 .commit()
         }
diff --git a/app/src/main/java/io/legado/app/utils/ConstraintModify.kt b/app/src/main/java/io/legado/app/utils/ConstraintModify.kt
index 286a58c1b..9b092a809 100644
--- a/app/src/main/java/io/legado/app/utils/ConstraintModify.kt
+++ b/app/src/main/java/io/legado/app/utils/ConstraintModify.kt
@@ -6,7 +6,7 @@ import androidx.constraintlayout.widget.ConstraintSet
 import androidx.transition.TransitionManager
 
 @Suppress("unused")
-fun ConstraintLayout.modify(withAnim: Boolean = false): ConstraintModify.ConstraintBegin {
+fun ConstraintLayout.modifyBegin(withAnim: Boolean = false): ConstraintModify.ConstraintBegin {
     val begin = ConstraintModify(this).begin
     if (withAnim) {
         TransitionManager.beginDelayedTransition(this)
@@ -60,15 +60,12 @@ class ConstraintModify(private val constraintLayout: ConstraintLayout) {
     ) {
 
         /**
-         * 清除关系<br></br>
-         * 注意：这里不仅仅会清除关系，还会清除对应控件的宽高为 w:0,h:0
-         * @param viewIds
+         * 清除关系,这里不仅仅会清除关系，还会清除对应控件的宽高为 w:0,h:0
+         * @param viewId 视图ID
          * @return
          */
-        fun clear(@IdRes vararg viewIds: Int): ConstraintBegin {
-            for (viewId in viewIds) {
-                applyConstraintSet.clear(viewId)
-            }
+        fun clear(viewId: Int): ConstraintBegin {
+            applyConstraintSet.clear(viewId)
             return this
         }
 
@@ -78,8 +75,8 @@ class ConstraintModify(private val constraintLayout: ConstraintLayout) {
          * @param anchor 要解除的关系
          * @return
          */
-        fun clear(viewId: Int, anchor: Int): ConstraintBegin {
-            applyConstraintSet.clear(viewId, anchor)
+        fun clear(viewId: Int, anchor: Anchor): ConstraintBegin {
+            applyConstraintSet.clear(viewId, anchor.toInt())
             return this
         }
 
@@ -280,4 +277,22 @@ class ConstraintModify(private val constraintLayout: ConstraintLayout) {
         }
     }
 
+    enum class Anchor {
+        LEFT, RIGHT, TOP, BOTTOM, BASELINE, START, END, CIRCLE_REFERENCE;
+
+        fun toInt(): Int {
+            return when (this) {
+                LEFT -> ConstraintSet.LEFT
+                RIGHT -> ConstraintSet.RIGHT
+                TOP -> ConstraintSet.TOP
+                BOTTOM -> ConstraintSet.BOTTOM
+                BASELINE -> ConstraintSet.BASELINE
+                START -> ConstraintSet.START
+                END -> ConstraintSet.END
+                CIRCLE_REFERENCE -> ConstraintSet.CIRCLE_REFERENCE
+            }
+        }
+
+    }
+
 }