feat: 优化代码

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

@@ -271,18 +271,18 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
                 }
             }
             KeyEvent.KEYCODE_SPACE -> {
-                page_view.moveToNextPage()
+                page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.NEXT)
                 return true
             }
             getPrefInt(PreferKey.prevKey) -> {
                 if (keyCode != KeyEvent.KEYCODE_UNKNOWN) {
-                    page_view.moveToPrevPage()
+                    page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.PREV)
                     return true
                 }
             }
             getPrefInt(PreferKey.nextKey) -> {
                 if (keyCode != KeyEvent.KEYCODE_UNKNOWN) {
-                    page_view.moveToNextPage()
+                    page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.NEXT)
                     return true
                 }
             }
@@ -440,11 +440,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
                 if (getPrefBoolean("volumeKeyPageOnPlay")
                     || BaseReadAloudService.pause
                 ) {
-                    when (direction) {
-                        PageDelegate.Direction.PREV -> page_view.moveToPrevPage()
-                        PageDelegate.Direction.NEXT -> page_view.moveToNextPage()
-                        else -> return true
-                    }
+                    page_view.pageDelegate?.keyTurnPage(direction)
                     return true
                 }
             }

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

@@ -117,22 +117,6 @@ class PageView(context: Context, attrs: AttributeSet) :
         callBack.screenOffTimerStart()
     }
 
-    fun moveToPrevPage(noAnim: Boolean = false) {
-        if (noAnim) {
-            fillPage(PageDelegate.Direction.PREV)
-        } else {
-            pageDelegate?.prevPageByAnim()
-        }
-    }
-
-    fun moveToNextPage(noAnim: Boolean = false) {
-        if (noAnim) {
-            fillPage(PageDelegate.Direction.NEXT)
-        } else {
-            pageDelegate?.nextPageByAnim()
-        }
-    }
-
     fun upStyle() {
         ChapterProvider.upStyle()
         curPage.upStyle()

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

@@ -169,6 +169,15 @@ abstract class PageDelegate(protected val pageView: PageView) :
         abort()
     }
 
+    open fun keyTurnPage(direction: Direction) {
+        if (isRunning) return
+        when (direction) {
+            Direction.NEXT -> nextPageByAnim()
+            Direction.PREV -> prevPageByAnim()
+            else -> return
+        }
+    }
+
     @CallSuper
     open fun setDirection(direction: Direction) {
         mDirection = direction