优化

app/src/main/java/io/legado/app/ui/main/MainActivity.kt

@@ -320,7 +320,6 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
         observeEvent<Boolean>(EventBus.NOTIFY_MAIN) {
             binding.apply {
                 upBottomMenu()
-                viewPagerMain.adapter?.notifyDataSetChanged()
                 if (it) {
                     viewPagerMain.setCurrentItem(bottomMenuCount - 1, false)
                 }
@@ -350,6 +349,7 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
         index++
         realPositions[index] = idMy
         bottomMenuCount = index + 1
+        adapter.notifyDataSetChanged()
     }
 
     private fun getFragmentId(position: Int): Int {
@@ -383,17 +383,27 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
             return getFragmentId(position)
         }
 
-        override fun getItemPosition(`object`: Any): Int {
+        override fun getItemPosition(any: Any): Int {
+            val position = (any as MainFragmentInterface).position
+            val fragmentId = getId(position)
+            if ((fragmentId == idBookshelf1 && any is BookshelfFragment1)
+                || (fragmentId == idBookshelf2 && any is BookshelfFragment2)
+                || (fragmentId == idExplore && any is ExploreFragment)
+                || (fragmentId == idRss && any is RssFragment)
+                || (fragmentId == idMy && any is MyFragment)
+            ) {
+                return POSITION_UNCHANGED
+            }
             return POSITION_NONE
         }
 
         override fun getItem(position: Int): Fragment {
             return when (getId(position)) {
-                idBookshelf1 -> BookshelfFragment1()
+                idBookshelf1 -> BookshelfFragment1(position)
-                idBookshelf2 -> BookshelfFragment2()
+                idBookshelf2 -> BookshelfFragment2(position)
-                idExplore -> ExploreFragment()
+                idExplore -> ExploreFragment(position)
-                idRss -> RssFragment()
+                idRss -> RssFragment(position)
-                else -> MyFragment()
+                else -> MyFragment(position)
             }
         }
 

app/src/main/java/io/legado/app/ui/main/MainFragmentInterface.kt

@@ -0,0 +1,7 @@
+package io.legado.app.ui.main
+
+interface MainFragmentInterface {
+
+    val position: Int
+
+}

app/src/main/java/io/legado/app/ui/main/bookshelf/BaseBookshelfFragment.kt

@@ -26,10 +26,12 @@ import io.legado.app.ui.book.import.remote.RemoteBookActivity
 import io.legado.app.ui.book.manage.BookshelfManageActivity
 import io.legado.app.ui.book.search.SearchActivity
 import io.legado.app.ui.file.HandleFileContract
+import io.legado.app.ui.main.MainFragmentInterface
 import io.legado.app.ui.main.MainViewModel
 import io.legado.app.utils.*
 
-abstract class BaseBookshelfFragment(layoutId: Int) : VMBaseFragment<BookshelfViewModel>(layoutId) {
+abstract class BaseBookshelfFragment(layoutId: Int) : VMBaseFragment<BookshelfViewModel>(layoutId),
+    MainFragmentInterface {
 
     val activityViewModel by activityViewModels<MainViewModel>()
     override val viewModel by viewModels<BookshelfViewModel>()
@@ -83,15 +85,19 @@ abstract class BaseBookshelfFragment(layoutId: Int) : VMBaseFragment<BookshelfVi
             R.id.menu_bookshelf_manage -> startActivity<BookshelfManageActivity> {
                 putExtra("groupId", groupId)
             }
+
             R.id.menu_download -> startActivity<CacheActivity> {
                 putExtra("groupId", groupId)
             }
+
             R.id.menu_export_bookshelf -> viewModel.exportBookshelf(books) { file ->
                 exportResult.launch {
                     mode = HandleFileContract.EXPORT
-                    fileData = HandleFileContract.FileData("bookshelf.json", file, "application/json")
+                    fileData =
+                        HandleFileContract.FileData("bookshelf.json", file, "application/json")
                 }
             }
+
             R.id.menu_import_bookshelf -> importBookshelfAlert(groupId)
             R.id.menu_log -> showDialogFragment<AppLogDialog>()
         }

app/src/main/java/io/legado/app/ui/main/bookshelf/style1/BookshelfFragment1.kt

@@ -30,10 +30,18 @@ import kotlin.collections.set
 /**
  * 书架界面
  */
-class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
+class BookshelfFragment1() : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
     TabLayout.OnTabSelectedListener,
     SearchView.OnQueryTextListener {
 
+    constructor(position: Int) : this() {
+        val bundle = Bundle()
+        bundle.putInt("position", position)
+        arguments = bundle
+    }
+
+    override val position: Int get() = arguments?.getInt("position") ?: -1
+
     private val binding by viewBinding(FragmentBookshelf1Binding::bind)
     private val adapter by lazy { TabFragmentPageAdapter(childFragmentManager) }
     private val tabLayout: TabLayout by lazy {
@@ -134,8 +142,8 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
          * 确定视图位置是否更改时调用
          * @return POSITION_NONE 已更改,刷新视图. POSITION_UNCHANGED 未更改,不刷新视图
          */
-        override fun getItemPosition(`object`: Any): Int {
+        override fun getItemPosition(any: Any): Int {
-            val fragment = `object` as BooksFragment
+            val fragment = any as BooksFragment
             val position = fragment.position
             val group = bookGroups.getOrNull(position)
             if (fragment.groupId != group?.groupId) {

app/src/main/java/io/legado/app/ui/main/bookshelf/style2/BookshelfFragment2.kt

@@ -42,10 +42,18 @@ import kotlin.math.max
 /**
  * 书架界面
  */
-class BookshelfFragment2 : BaseBookshelfFragment(R.layout.fragment_bookshelf2),
+class BookshelfFragment2() : BaseBookshelfFragment(R.layout.fragment_bookshelf2),
     SearchView.OnQueryTextListener,
     BaseBooksAdapter.CallBack {
 
+    constructor(position: Int) : this() {
+        val bundle = Bundle()
+        bundle.putInt("position", position)
+        arguments = bundle
+    }
+
+    override val position: Int get() = arguments?.getInt("position") ?: -1
+
     private val binding by viewBinding(FragmentBookshelf2Binding::bind)
     private val bookshelfLayout by lazy {
         getPrefInt(PreferKey.bookshelfLayout)

app/src/main/java/io/legado/app/ui/main/explore/ExploreFragment.kt

@@ -24,6 +24,7 @@ import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.ui.book.explore.ExploreShowActivity
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
 import io.legado.app.ui.main.MainActivity
+import io.legado.app.ui.main.MainFragmentInterface
 import io.legado.app.utils.applyTint
 import io.legado.app.utils.cnCompare
 import io.legado.app.utils.setEdgeEffectColor
@@ -42,8 +43,18 @@ import kotlinx.coroutines.launch
 /**
  * 发现界面
  */
-class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explore),
+class ExploreFragment() : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explore),
-    ExploreAdapter.CallBack, MainActivity.Callback {
+    MainFragmentInterface,
+    ExploreAdapter.CallBack,
+    MainActivity.Callback {
+
+    constructor(position: Int) : this() {
+        val bundle = Bundle()
+        bundle.putInt("position", position)
+        arguments = bundle
+    }
+
+    override val position: Int get() = arguments?.getInt("position") ?: -1
 
     override val viewModel by viewModels<ExploreViewModel>()
     private val binding by viewBinding(FragmentExploreBinding::bind)

app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt

@@ -30,12 +30,29 @@ import io.legado.app.ui.config.ConfigActivity
 import io.legado.app.ui.config.ConfigTag
 import io.legado.app.ui.dict.rule.DictRuleActivity
 import io.legado.app.ui.file.FileManageActivity
+import io.legado.app.ui.main.MainFragmentInterface
 import io.legado.app.ui.replace.ReplaceRuleActivity
 import io.legado.app.ui.widget.dialog.TextDialog
-import io.legado.app.utils.*
+import io.legado.app.utils.LogUtils
+import io.legado.app.utils.getPrefBoolean
+import io.legado.app.utils.observeEventSticky
+import io.legado.app.utils.openUrl
+import io.legado.app.utils.putPrefBoolean
+import io.legado.app.utils.sendToClip
+import io.legado.app.utils.setEdgeEffectColor
+import io.legado.app.utils.showDialogFragment
+import io.legado.app.utils.startActivity
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 
-class MyFragment : BaseFragment(R.layout.fragment_my_config) {
+class MyFragment() : BaseFragment(R.layout.fragment_my_config), MainFragmentInterface {
+
+    constructor(position: Int) : this() {
+        val bundle = Bundle()
+        bundle.putInt("position", position)
+        arguments = bundle
+    }
+
+    override val position: Int get() = arguments?.getInt("position") ?: -1
 
     private val binding by viewBinding(FragmentMyConfigBinding::bind)
 
@@ -131,6 +148,7 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config) {
                         WebService.stop(requireContext())
                     }
                 }
+
                 "recordLog" -> LogUtils.upLevel()
             }
         }
@@ -145,12 +163,15 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config) {
                 "setting" -> startActivity<ConfigActivity> {
                     putExtra("configTag", ConfigTag.OTHER_CONFIG)
                 }
+
                 "web_dav_setting" -> startActivity<ConfigActivity> {
                     putExtra("configTag", ConfigTag.BACKUP_CONFIG)
                 }
+
                 "theme_setting" -> startActivity<ConfigActivity> {
                     putExtra("configTag", ConfigTag.THEME_CONFIG)
                 }
+
                 "fileManage" -> startActivity<FileManageActivity>()
                 "readRecord" -> startActivity<ReadRecordActivity>()
                 "donate" -> startActivity<DonateActivity>()

app/src/main/java/io/legado/app/ui/main/rss/RssFragment.kt

@@ -18,6 +18,7 @@ import io.legado.app.databinding.ItemRssBinding
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.lib.theme.primaryTextColor
+import io.legado.app.ui.main.MainFragmentInterface
 import io.legado.app.ui.rss.article.RssSortActivity
 import io.legado.app.ui.rss.favorites.RssFavoritesActivity
 import io.legado.app.ui.rss.read.ReadRssActivity
@@ -25,7 +26,12 @@ import io.legado.app.ui.rss.source.edit.RssSourceEditActivity
 import io.legado.app.ui.rss.source.manage.RssSourceActivity
 import io.legado.app.ui.rss.source.manage.RssSourceViewModel
 import io.legado.app.ui.rss.subscription.RuleSubActivity
-import io.legado.app.utils.*
+import io.legado.app.utils.applyTint
+import io.legado.app.utils.cnCompare
+import io.legado.app.utils.openUrl
+import io.legado.app.utils.setEdgeEffectColor
+import io.legado.app.utils.splitNotBlank
+import io.legado.app.utils.startActivity
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.catch
@@ -36,9 +42,18 @@ import kotlinx.coroutines.launch
 /**
  * 订阅界面
  */
-class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
+class RssFragment() : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
+    MainFragmentInterface,
     RssAdapter.CallBack {
 
+    constructor(position: Int) : this() {
+        val bundle = Bundle()
+        bundle.putInt("position", position)
+        arguments = bundle
+    }
+
+    override val position: Int get() = arguments?.getInt("position") ?: -1
+
     private val binding by viewBinding(FragmentRssBinding::bind)
     override val viewModel by viewModels<RssSourceViewModel>()
     private val adapter by lazy { RssAdapter(requireContext(), this) }