优化导航栏位置

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

@@ -156,18 +156,21 @@ abstract class ReadBookBaseActivity :
                     } else {
                         0
                     }
-                when (navigationBarPos) {
+                when (navigationBarGravity) {
-                    POS.BOTTOM -> layoutParams = (layoutParams as FrameLayout.LayoutParams).apply {
+                    Gravity.BOTTOM -> layoutParams =
+                        (layoutParams as FrameLayout.LayoutParams).apply {
                             height = navigationBarHeight
                             width = MATCH_PARENT
                             gravity = Gravity.BOTTOM
                         }
-                    POS.LEFT -> layoutParams = (layoutParams as FrameLayout.LayoutParams).apply {
+                    Gravity.LEFT -> layoutParams =
+                        (layoutParams as FrameLayout.LayoutParams).apply {
                             height = MATCH_PARENT
                             width = navigationBarHeight
                             gravity = Gravity.LEFT
                         }
-                    POS.RIGHT -> layoutParams = (layoutParams as FrameLayout.LayoutParams).apply {
+                    Gravity.RIGHT -> layoutParams =
+                        (layoutParams as FrameLayout.LayoutParams).apply {
                             height = MATCH_PARENT
                             width = navigationBarHeight
                             gravity = Gravity.RIGHT

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

@@ -1,9 +1,11 @@
 package io.legado.app.ui.book.read
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.content.res.ColorStateList
 import android.graphics.drawable.GradientDrawable
 import android.util.AttributeSet
+import android.view.Gravity
 import android.view.LayoutInflater
 import android.view.View.OnClickListener
 import android.view.View.OnLongClickListener
@@ -305,6 +307,7 @@ class ReadMenu @JvmOverloads constructor(
                 binding.llBrightness.visible(showBrightnessView)
             }
 
+            @SuppressLint("RtlHardcoded")
             override fun onAnimationEnd(animation: Animation) {
                 val navigationBarHeight =
                     if (ReadBookConfig.hideNavigationBar) {
@@ -315,12 +318,13 @@ class ReadMenu @JvmOverloads constructor(
                 binding.run {
                     vwMenuBg.setOnClickListener { runMenuOut() }
                     root.padding = 0
-                    when (activity?.navigationBarPos) {
+                    when (activity?.navigationBarGravity) {
-                        POS.BOTTOM -> root.bottomPadding = navigationBarHeight
+                        Gravity.BOTTOM -> root.bottomPadding = navigationBarHeight
-                        POS.LEFT -> root.leftPadding = navigationBarHeight
+                        Gravity.LEFT -> root.leftPadding = navigationBarHeight
-                        POS.RIGHT -> root.rightPadding = navigationBarHeight
+                        Gravity.RIGHT -> root.rightPadding = navigationBarHeight
                     }
                 }
+                callBack.upSystemUiVisibility()
                 if (!LocalConfig.readMenuHelpVersionIsLast) {
                     callBack.showReadMenuHelp()
                 }

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

@@ -5,6 +5,7 @@ import android.os.Build
 import android.os.Bundle
 import android.util.DisplayMetrics
 import android.view.*
+import android.widget.FrameLayout
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.DialogFragment
 
@@ -38,29 +39,34 @@ val Activity.windowSize: DisplayMetrics
         return displayMetrics
     }
 
+/////以下方法需要在View完全被绘制出来之后调用，否则判断不了,在比如 onWindowFocusChanged（）方法中可以得到正确的结果/////
 
 /**
- * 返回NavigationBar是否存在
+ * 返回NavigationBar
- * 该方法需要在View完全被绘制出来之后调用，否则判断不了
- * 在比如 onWindowFocusChanged（）方法中可以得到正确的结果
  */
-val Activity.isNavigationBarExist: Boolean
+val Activity.navigationBar: View?
     get() {
-        val viewGroup = (window.decorView as? ViewGroup) ?: return false
+        val viewGroup = (window.decorView as? ViewGroup) ?: return null
         for (i in 0 until viewGroup.childCount) {
-            val childId = viewGroup.getChildAt(i).id
+            val child = viewGroup.getChildAt(i)
+            val childId = child.id
             if (childId != View.NO_ID
                 && resources.getResourceEntryName(childId) == "navigationBarBackground"
             ) {
-                return true
+                return child
             }
         }
-        return false
+        return null
     }
 
 /**
- * 该方法需要在View完全被绘制出来之后调用，否则判断不了
+ * 返回NavigationBar是否存在
- * 在比如 onWindowFocusChanged（）方法中可以得到正确的结果
+ */
+val Activity.isNavigationBarExist: Boolean
+    get() = navigationBar != null
+
+/**
+ * 返回NavigationBar高度
  */
 val Activity.navigationBarHeight: Int
     get() {
@@ -72,47 +78,10 @@ val Activity.navigationBarHeight: Int
     }
 
 /**
- * 返回导航栏位置
+ * 返回navigationBar位置
  */
-@Suppress("DEPRECATION")
+val Activity.navigationBarGravity: Int
-val Activity.navigationBarPos: POS
     get() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+        val gravity = (navigationBar?.layoutParams as? FrameLayout.LayoutParams)?.gravity
-            val display: Display = windowManager.defaultDisplay
+        return gravity ?: Gravity.BOTTOM
-            val rotate: Int = display.rotation
-            val height: Int = display.height
-            val width: Int = display.width
-            return if (width > height) {
-                if (rotate == Surface.ROTATION_270) {
-                    POS.LEFT
-                } else {
-                    POS.RIGHT
     }
-            } else {
-                POS.BOTTOM
-            }
-        } else {
-            val display: Display = windowManager.defaultDisplay
-            val metricsReal = DisplayMetrics()
-            display.getRealMetrics(metricsReal)
-
-            val metricsCurrent = DisplayMetrics()
-            display.getMetrics(metricsCurrent)
-
-            val currH = metricsCurrent.heightPixels
-            val currW = metricsCurrent.widthPixels
-
-            val realW = metricsReal.widthPixels
-            val realH = metricsReal.heightPixels
-
-            return if (currW != realW && currH == realH) {
-                POS.RIGHT
-            } else {
-                POS.BOTTOM
-            }
-        }
-    }
-
-enum class POS {
-    BOTTOM, LEFT, RIGHT
-}