feat: 优化代码

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

@@ -632,7 +632,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
         super.onDestroy()
         mHandler.removeCallbacks(keepScreenRunnable)
         textActionMenu?.dismiss()
-        page_view.pageDelegate?.onDestroy()
+        page_view.onDestroy()
     }
 
     override fun observeLiveBus() {

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

@@ -70,6 +70,11 @@ class PageView(context: Context, attrs: AttributeSet) :
         return pageDelegate?.onTouch(event) ?: super.onTouchEvent(event)
     }
 
+    fun onDestroy() {
+        pageDelegate?.onDestroy()
+        curPage.cancelSelect()
+    }
+
     fun fillPage(direction: PageDelegate.Direction) {
         when (direction) {
             PageDelegate.Direction.PREV -> {