优化

app/src/main/java/io/legado/app/help/PaintPool.kt

@@ -0,0 +1,17 @@
+package io.legado.app.help
+
+import android.graphics.Paint
+import io.legado.app.utils.objectpool.BaseSafeObjectPool
+
+object PaintPool : BaseSafeObjectPool<Paint>(8) {
+
+    private val emptyPaint = Paint()
+
+    override fun create(): Paint = Paint()
+
+    override fun recycle(target: Paint) {
+        target.set(emptyPaint)
+        super.recycle(target)
+    }
+
+}

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

@@ -55,7 +55,6 @@ object ThemeConfig {
         initNightMode()
         BookCover.upDefaultCover()
         postEvent(EventBus.RECREATE, "")
-        postEvent(EventBus.UP_CONFIG, arrayOf(2, 9))
     }
 
     private fun initNightMode() {
@@ -74,10 +73,12 @@ object ThemeConfig {
                 context.getPrefString(PreferKey.bgImage),
                 context.getPrefInt(PreferKey.bgImageBlurring, 0)
             )
+
             Theme.Dark -> Pair(
                 context.getPrefString(PreferKey.bgImageN),
                 context.getPrefInt(PreferKey.bgImageNBlurring, 0)
             )
+
             else -> null
         } ?: return null
         if (bgCfg.first.isNullOrBlank()) return null
@@ -218,6 +219,7 @@ object ThemeConfig {
                     .bottomBackground(Color.WHITE)
                     .apply()
             }
+
             AppConfig.isNightTheme -> {
                 val primary =
                     getPrefInt(PreferKey.cNPrimary, getCompatColor(R.color.md_blue_grey_600))
@@ -238,6 +240,7 @@ object ThemeConfig {
                     .bottomBackground(ColorUtils.withAlpha(bBackground, 1f))
                     .apply()
             }
+
             else -> {
                 val primary =
                     getPrefInt(PreferKey.cPrimary, getCompatColor(R.color.md_brown_500))

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

@@ -460,6 +460,7 @@ class ReadView(context: Context, attrs: AttributeSet) :
     fun onDestroy() {
         pageDelegate?.onDestroy()
         curPage.cancelSelect()
+        invalidateTextPage()
     }
 
     /**

app/src/main/java/io/legado/app/ui/book/read/page/entities/column/TextColumn.kt

@@ -2,6 +2,7 @@ package io.legado.app.ui.book.read.page.entities.column
 
 import android.graphics.Canvas
 import androidx.annotation.Keep
+import io.legado.app.help.PaintPool
 import io.legado.app.help.config.ReadBookConfig
 import io.legado.app.lib.theme.ThemeStore
 import io.legado.app.ui.book.read.page.ContentTextView
@@ -42,15 +43,18 @@ data class TextColumn(
         } else {
             ChapterProvider.contentPaint
         }
-        if (textLine.isReadAloud || isSearchResult) {
+        val textColor = if (textLine.isReadAloud || isSearchResult) {
-            synchronized(textPaint) {
+            ThemeStore.accentColor
-                textPaint.color = ThemeStore.accentColor
-                canvas.drawText(charData, start, textLine.lineBase - textLine.lineTop, textPaint)
-                textPaint.color = ReadBookConfig.textColor
-            }
         } else {
-            canvas.drawText(charData, start, textLine.lineBase - textLine.lineTop, textPaint)
+            ReadBookConfig.textColor
         }
+        val paint = PaintPool.obtain()
+        paint.set(textPaint)
+        if (paint.color != textColor) {
+            paint.color = textColor
+        }
+        canvas.drawText(charData, start, textLine.lineBase - textLine.lineTop, paint)
+        PaintPool.recycle(paint)
         if (selected) {
             canvas.drawRect(start, 0f, end, textLine.height, view.selectedPaint)
         }

app/src/main/java/io/legado/app/utils/canvasrecorder/CanvasRecorderApi23Impl.kt

@@ -2,8 +2,8 @@ package io.legado.app.utils.canvasrecorder
 
 import android.graphics.Canvas
 import android.graphics.Picture
-import io.legado.app.utils.canvasrecorder.objectpool.synchronized
 import io.legado.app.utils.canvasrecorder.pools.PicturePool
+import io.legado.app.utils.objectpool.synchronized
 
 class CanvasRecorderApi23Impl : BaseCanvasRecorder() {
 

app/src/main/java/io/legado/app/utils/canvasrecorder/CanvasRecorderApi29Impl.kt

@@ -5,7 +5,7 @@ import android.graphics.Picture
 import android.graphics.RenderNode
 import android.os.Build
 import androidx.annotation.RequiresApi
-import io.legado.app.utils.canvasrecorder.objectpool.synchronized
+import io.legado.app.utils.objectpool.synchronized
 import io.legado.app.utils.canvasrecorder.pools.PicturePool
 import io.legado.app.utils.canvasrecorder.pools.RenderNodePool
 

app/src/main/java/io/legado/app/utils/canvasrecorder/objectpool/BaseObjectPool.kt

@@ -1,24 +0,0 @@
-package io.legado.app.utils.canvasrecorder.objectpool
-
-import androidx.annotation.CallSuper
-import java.lang.ref.SoftReference
-import java.util.LinkedList
-
-abstract class BaseObjectPool<T> : ObjectPool<T> {
-
-    private val pool = LinkedList<SoftReference<T>>()
-
-    override fun obtain(): T {
-        while (true) {
-            if (pool.isEmpty()) break
-            return pool.poll()?.get() ?: continue
-        }
-        return create()
-    }
-
-    @CallSuper
-    override fun recycle(target: T) {
-        pool.add(SoftReference(target))
-    }
-
-}

app/src/main/java/io/legado/app/utils/canvasrecorder/pools/PicturePool.kt

@@ -1,9 +1,9 @@
 package io.legado.app.utils.canvasrecorder.pools
 
 import android.graphics.Picture
-import io.legado.app.utils.canvasrecorder.objectpool.BaseObjectPool
+import io.legado.app.utils.objectpool.BaseObjectPool
 
-class PicturePool : BaseObjectPool<Picture>() {
+class PicturePool : BaseObjectPool<Picture>(64) {
 
     override fun create(): Picture = Picture()
 

app/src/main/java/io/legado/app/utils/canvasrecorder/pools/RenderNodePool.kt

@@ -3,10 +3,10 @@ package io.legado.app.utils.canvasrecorder.pools
 import android.graphics.RenderNode
 import android.os.Build
 import androidx.annotation.RequiresApi
-import io.legado.app.utils.canvasrecorder.objectpool.BaseObjectPool
+import io.legado.app.utils.objectpool.BaseObjectPool
 
 @RequiresApi(Build.VERSION_CODES.Q)
-class RenderNodePool : BaseObjectPool<RenderNode>() {
+class RenderNodePool : BaseObjectPool<RenderNode>(64) {
 
     override fun recycle(target: RenderNode) {
         target.discardDisplayList()

app/src/main/java/io/legado/app/utils/objectpool/BaseObjectPool.kt

@@ -0,0 +1,19 @@
+package io.legado.app.utils.objectpool
+
+import androidx.annotation.CallSuper
+import androidx.core.util.Pools
+
+abstract class BaseObjectPool<T : Any>(size: Int) : ObjectPool<T> {
+
+    open val pool = Pools.SimplePool<T>(size)
+
+    override fun obtain(): T {
+        return pool.acquire() ?: create()
+    }
+
+    @CallSuper
+    override fun recycle(target: T) {
+        pool.release(target)
+    }
+
+}

app/src/main/java/io/legado/app/utils/objectpool/BaseSafeObjectPool.kt

@@ -0,0 +1,9 @@
+package io.legado.app.utils.objectpool
+
+import androidx.core.util.Pools
+
+abstract class BaseSafeObjectPool<T : Any>(size: Int): BaseObjectPool<T>(size) {
+
+    override val pool = Pools.SynchronizedPool<T>(size)
+
+}

app/src/main/java/io/legado/app/utils/objectpool/ObjectPool.kt

@@ -1,4 +1,4 @@
-package io.legado.app.utils.canvasrecorder.objectpool
+package io.legado.app.utils.objectpool
 
 interface ObjectPool<T> {
 

app/src/main/java/io/legado/app/utils/objectpool/ObjectPoolExtensions.kt

@@ -1,3 +1,3 @@
-package io.legado.app.utils.canvasrecorder.objectpool
+package io.legado.app.utils.objectpool
 
 fun <T> ObjectPool<T>.synchronized(): ObjectPool<T> = ObjectPoolLocked(this)

app/src/main/java/io/legado/app/utils/objectpool/ObjectPoolLocked.kt

@@ -1,4 +1,4 @@
-package io.legado.app.utils.canvasrecorder.objectpool
+package io.legado.app.utils.objectpool
 
 class ObjectPoolLocked<T>(private val delegate: ObjectPool<T>) : ObjectPool<T> by delegate {