优化

app/src/main/java/io/legado/app/constant/PreferKey.kt

@@ -128,6 +128,7 @@ object PreferKey {
     const val showLastUpdateTime = "showLastUpdateTime"
     const val clearWebViewData = "clearWebViewData"
     const val onlyLatestBackup = "onlyLatestBackup"
+    const val brightnessVwPos = "brightnessVwPos"
 
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"

app/src/main/java/io/legado/app/help/config/AppConfig.kt

@@ -451,6 +451,12 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
             appCtx.putPrefBoolean(PreferKey.audioPlayWakeLock, value)
         }
 
+    var brightnessVwPos: Boolean
+        get() = appCtx.getPrefBoolean(PreferKey.brightnessVwPos)
+        set(value) {
+            appCtx.putPrefBoolean(PreferKey.brightnessVwPos, value)
+        }
+
     fun detectClickArea() {
         if (clickActionTL * clickActionTC * clickActionTR
             * clickActionML * clickActionMC * clickActionMR

app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt

@@ -16,6 +16,7 @@ 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
@@ -208,6 +209,7 @@ class ReadMenu @JvmOverloads constructor(
         } else {
             titleBarAddition.gone()
         }
+        upBrightnessVwPos()
     }
 
     fun reset() {
@@ -366,7 +368,10 @@ class ReadMenu @JvmOverloads constructor(
             }
 
         })
-
+        vwBrightnessPosAdjust.setOnClickListener {
+            AppConfig.brightnessVwPos = !AppConfig.brightnessVwPos
+            upBrightnessVwPos()
+        }
         //阅读进度
         seekReadPage.setOnSeekBarChangeListener(object : SeekBarChangeListener {
 
@@ -492,6 +497,7 @@ class ReadMenu @JvmOverloads constructor(
                         progress = ReadBook.durPageIndex
                     }
                 }
+
                 "chapter" -> {
                     max = ReadBook.chapterSize - 1
                     progress = ReadBook.durChapterIndex
@@ -515,6 +521,20 @@ class ReadMenu @JvmOverloads constructor(
         fabAutoPage.setColorFilter(textColor)
     }
 
+    private fun upBrightnessVwPos() {
+        if (AppConfig.brightnessVwPos) {
+            binding.root.modify()
+                .clear(R.id.ll_brightness, ConstraintSet.LEFT)
+                .rightToRightOf(R.id.ll_brightness, R.id.vw_menu_root)
+                .commit()
+        } else {
+            binding.root.modify()
+                .clear(R.id.ll_brightness, ConstraintSet.RIGHT)
+                .leftToLeftOf(R.id.ll_brightness, R.id.vw_menu_root)
+                .commit()
+        }
+    }
+
     interface CallBack {
         fun autoPage()
         fun openReplaceRule()

app/src/main/java/io/legado/app/utils/ConstraintModify.kt

@@ -18,9 +18,8 @@ fun ConstraintLayout.modify(withAnim: Boolean = false): ConstraintModify.Constra
 class ConstraintModify(private val constraintLayout: ConstraintLayout) {
 
     val begin: ConstraintBegin by lazy {
-        ConstraintBegin(constraintLayout, applyConstraintSet).apply {
-            applyConstraintSet.clone(constraintLayout)
-        }
+        applyConstraintSet.clone(constraintLayout)
+        ConstraintBegin(constraintLayout, applyConstraintSet)
     }
     private val applyConstraintSet = ConstraintSet()
     private val resetConstraintSet = ConstraintSet()
@@ -75,8 +74,8 @@ class ConstraintModify(private val constraintLayout: ConstraintLayout) {
 
         /**
          * 清除某个控件的，某个关系
-         * @param viewId
-         * @param anchor
+         * @param viewId 控件ID
+         * @param anchor 要解除的关系
          * @return
          */
         fun clear(viewId: Int, anchor: Int): ConstraintBegin {
@@ -275,7 +274,9 @@ class ConstraintModify(private val constraintLayout: ConstraintLayout) {
          * 提交应用生效
          */
         fun commit() {
-            applyConstraintSet.applyTo(constraintLayout)
+            constraintLayout.post {
+                applyConstraintSet.applyTo(constraintLayout)
+            }
         }
     }