feat: 优化代码

app/src/main/java/io/legado/app/service/help/ReadBook.kt

@@ -127,6 +127,12 @@ object ReadBook {
         saveRead()
     }
 
+    fun setPageIndex(pageIndex: Int) {
+        durPageIndex = pageIndex
+        saveRead()
+        curPageChanged()
+    }
+
     fun curPageChanged() {
         callBack?.upPageProgress()
         if (BaseReadAloudService.isRun) {

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

@@ -505,12 +505,6 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
         viewModel.changeTo(book)
     }
 
-    override fun setPageIndex(pageIndex: Int) {
-        ReadBook.durPageIndex = pageIndex
-        ReadBook.saveRead()
-        ReadBook.curPageChanged()
-    }
-
     override fun clickCenter() {
         if (BaseReadAloudService.isRun) {
             showReadAloudDialog()

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

@@ -168,7 +168,7 @@ class PageView(context: Context, attrs: AttributeSet) :
         get() = ReadBook.durChapterPos()
 
     override fun setPageIndex(pageIndex: Int) {
-        callBack.setPageIndex(pageIndex)
+        ReadBook.setPageIndex(pageIndex)
     }
 
     override fun getChapterPosition(): Int {
@@ -196,19 +196,8 @@ class PageView(context: Context, attrs: AttributeSet) :
     }
 
     interface CallBack {
-
         val isInitFinish: Boolean
-
-        /**
-         * 保存页数
-         */
-        fun setPageIndex(pageIndex: Int)
-
-        /**
-         * 点击屏幕中间
-         */
         fun clickCenter()
-
         fun screenOffTimerStart()
     }
 }