优化

app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt

@@ -27,7 +27,7 @@ import java.util.*
 
 class ReadRecordActivity : BaseActivity<ActivityReadRecordBinding>() {
 
-    lateinit var adapter: RecordAdapter
+    private val adapter by lazy { RecordAdapter(this) }
     private var sortMode = 0
 
     override val binding by viewBinding(ActivityReadRecordBinding::inflate)
@@ -58,7 +58,6 @@ class ReadRecordActivity : BaseActivity<ActivityReadRecordBinding>() {
 
     private fun initView() = binding.run {
         readRecord.tvBookName.setText(R.string.all_read_time)
-        adapter = RecordAdapter(this@ReadRecordActivity)
         recyclerView.adapter = adapter
         readRecord.tvRemove.setOnClickListener {
             alert(R.string.delete, R.string.sure_del) {

app/src/main/java/io/legado/app/ui/association/ImportBookSourceDialog.kt

@@ -58,7 +58,7 @@ class ImportBookSourceDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickList
 
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
     private val viewModel by viewModels<ImportBookSourceViewModel>()
-    private lateinit var adapter: SourcesAdapter
+    private val adapter by lazy { SourcesAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -89,7 +89,6 @@ class ImportBookSourceDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickList
         binding.toolBar.setTitle(R.string.import_book_source)
         binding.rotateLoading.show()
         initMenu()
-        adapter = SourcesAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.adapter = adapter
         binding.tvCancel.visible()

app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleDialog.kt

@@ -51,7 +51,7 @@ class ImportReplaceRuleDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickLis
 
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
     private val viewModel by viewModels<ImportReplaceRuleViewModel>()
-    lateinit var adapter: SourcesAdapter
+    private val adapter by lazy { SourcesAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -82,7 +82,6 @@ class ImportReplaceRuleDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickLis
         binding.toolBar.setTitle(R.string.import_replace_rule)
         binding.rotateLoading.show()
         initMenu()
-        adapter = SourcesAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.adapter = adapter
         binding.tvCancel.visible()

app/src/main/java/io/legado/app/ui/association/ImportRssSourceDialog.kt

@@ -55,7 +55,7 @@ class ImportRssSourceDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListe
 
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
     private val viewModel by viewModels<ImportRssSourceViewModel>()
-    lateinit var adapter: SourcesAdapter
+    private val adapter by lazy { SourcesAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -86,7 +86,6 @@ class ImportRssSourceDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListe
         binding.toolBar.setTitle(R.string.import_rss_source)
         binding.rotateLoading.show()
         initMenu()
-        adapter = SourcesAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.adapter = adapter
         binding.tvCancel.visible()

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt

@@ -45,7 +45,7 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
     override val groupList: ArrayList<BookGroup> = arrayListOf()
     private val groupRequestCode = 22
     private val addToGroupRequestCode = 34
-    private lateinit var adapter: ArrangeBookAdapter
+    private val adapter by lazy { ArrangeBookAdapter(this, this) }
     private var booksFlowJob: Job? = null
     private var menu: Menu? = null
     private var groupId: Long = -1
@@ -90,7 +90,6 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
         ATH.applyEdgeEffectColor(binding.recyclerView)
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
-        adapter = ArrangeBookAdapter(this, this)
         binding.recyclerView.adapter = adapter
         val itemTouchCallback = ItemTouchCallback(adapter)
         itemTouchCallback.isCanDrag = getPrefInt(PreferKey.bookshelfSort) == 3

app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt

@@ -44,7 +44,7 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
 
     private val exportBookPathKey = "exportBookPath"
     private val exportTypes = arrayListOf("txt", "epub")
-    lateinit var adapter: CacheAdapter
+    private val adapter by lazy { CacheAdapter(this, this) }
     private var booksFlowJob: Job? = null
     private var menu: Menu? = null
     private var exportPosition = -1
@@ -147,7 +147,6 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
 
     private fun initRecyclerView() {
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
-        adapter = CacheAdapter(this, this)
         binding.recyclerView.adapter = adapter
     }
 

app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt

@@ -40,7 +40,7 @@ class ChangeCoverDialog : BaseDialogFragment(),
     private val binding by viewBinding(DialogChangeCoverBinding::bind)
     private var callBack: CallBack? = null
     private val viewModel: ChangeCoverViewModel by viewModels()
-    lateinit var adapter: CoverAdapter
+    private val adapter by lazy { CoverAdapter(requireContext(), this) }
 
     override fun onStart() {
         super.onStart()
@@ -73,7 +73,6 @@ class ChangeCoverDialog : BaseDialogFragment(),
 
     private fun initView() {
         binding.recyclerView.layoutManager = GridLayoutManager(requireContext(), 3)
-        adapter = CoverAdapter(requireContext(), this)
         binding.recyclerView.adapter = adapter
         viewModel.loadDbSearchBook()
     }

app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt

@@ -51,7 +51,7 @@ class ChangeSourceDialog : BaseDialogFragment(),
     private val groups = linkedSetOf<String>()
     private var callBack: CallBack? = null
     private val viewModel: ChangeSourceViewModel by viewModels()
-    lateinit var adapter: ChangeSourceAdapter
+    private val adapter by lazy { ChangeSourceAdapter(requireContext(), viewModel, this) }
 
     override fun onStart() {
         super.onStart()
@@ -97,7 +97,6 @@ class ChangeSourceDialog : BaseDialogFragment(),
     }
 
     private fun initRecyclerView() {
-        adapter = ChangeSourceAdapter(requireContext(), viewModel, this)
         binding.recyclerView.layoutManager = LinearLayoutManager(context)
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt

@@ -20,8 +20,8 @@ class ExploreShowActivity : VMBaseActivity<ActivityExploreShowBinding, ExploreSh
     override val binding by viewBinding(ActivityExploreShowBinding::inflate)
     override val viewModel by viewModels<ExploreShowViewModel>()
 
-    private lateinit var adapter: ExploreShowAdapter
-    private lateinit var loadMoreView: LoadMoreView
+    private val adapter by lazy { ExploreShowAdapter(this, this) }
+    private val loadMoreView by lazy { LoadMoreView(this) }
     private var isLoading = true
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
@@ -35,10 +35,8 @@ class ExploreShowActivity : VMBaseActivity<ActivityExploreShowBinding, ExploreSh
     }
 
     private fun initRecyclerView() {
-        adapter = ExploreShowAdapter(this, this)
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
         binding.recyclerView.adapter = adapter
-        loadMoreView = LoadMoreView(this)
         adapter.addFooterView {
             ViewLoadMoreBinding.bind(loadMoreView)
         }

app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt

@@ -34,8 +34,8 @@ import kotlinx.coroutines.launch
 
 class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private val viewModel: GroupViewModel by viewModels()
-    private lateinit var adapter: GroupAdapter
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
+    private val adapter by lazy { GroupAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -60,7 +60,6 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     }
 
     private fun initView() {
-        adapter = GroupAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt

@@ -51,7 +51,7 @@ class GroupSelectDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     private val binding by viewBinding(DialogBookGroupPickerBinding::bind)
     private var requestCode: Int = -1
     private val viewModel: GroupViewModel by viewModels()
-    private lateinit var adapter: GroupAdapter
+    private val adapter by lazy { GroupAdapter(requireContext()) }
     private var callBack: CallBack? = null
     private var groupId: Long = 0
 
@@ -85,7 +85,6 @@ class GroupSelectDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         binding.toolBar.inflateMenu(R.menu.book_group_manage)
         binding.toolBar.menu.applyTint(requireContext())
         binding.toolBar.setOnMenuItemClickListener(this)
-        adapter = GroupAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt

@@ -46,7 +46,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
 
     private var rootDoc: DocumentFile? = null
     private val subDocs = arrayListOf<DocumentFile>()
-    private lateinit var adapter: ImportBookAdapter
+    private val adapter by lazy { ImportBookAdapter(this, this) }
     private var sdPath = FileUtils.getSdCardPath()
     private var path = sdPath
     private val selectFolder = registerForActivityResult(HandleFileContract()) { uri ->
@@ -111,7 +111,6 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
     private fun initView() {
         binding.layTop.setBackgroundColor(backgroundColor)
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
-        adapter = ImportBookAdapter(this, this)
         binding.recyclerView.adapter = adapter
         binding.selectActionBar.setMainActionText(R.string.add_to_shelf)
         binding.selectActionBar.inflateMenu(R.menu.import_book_sel)

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

@@ -32,6 +32,7 @@ import java.util.*
 class TextActionMenu(private val context: Context, private val callBack: CallBack) :
     PopupWindow(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT),
     TextToSpeech.OnInitListener {
+
     private val binding = PopupActionMenuBinding.inflate(LayoutInflater.from(context))
     private val adapter = Adapter(context)
     private val menuItems: List<MenuItemImpl>

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

@@ -39,7 +39,7 @@ class BgTextConfigDialog : BaseDialogFragment() {
 
     private val binding by viewBinding(DialogReadBgTextBinding::bind)
     private val configFileName = "readConfig.zip"
-    private lateinit var adapter: BgAdapter
+    private val adapter by lazy { BgAdapter(requireContext(), secondaryTextColor) }
     private var primaryTextColor = 0
     private var secondaryTextColor = 0
     private val importFormNet = "网络导入"
@@ -111,7 +111,6 @@ class BgTextConfigDialog : BaseDialogFragment() {
         ivExport.setColorFilter(primaryTextColor)
         ivDelete.setColorFilter(primaryTextColor)
         tvBgImage.setTextColor(primaryTextColor)
-        adapter = BgAdapter(requireContext(), secondaryTextColor)
         recyclerView.adapter = adapter
         adapter.addHeaderView {
             ItemBgImageBinding.inflate(layoutInflater, it, false).apply {

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

@@ -35,10 +35,11 @@ import splitties.init.appCtx
 
 
 class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
+
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
-    private val ttsUrlKey = "ttsUrlKey"
-    lateinit var adapter: Adapter
     private val viewModel: SpeakEngineViewModel by viewModels()
+    private val ttsUrlKey = "ttsUrlKey"
+    private val adapter by lazy { Adapter(requireContext()) }
     private var engineId = appCtx.getPrefLong(PreferKey.speakEngine)
     private val importDocResult = registerForActivityResult(HandleFileContract()) {
         it?.let {
@@ -84,7 +85,6 @@ class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         toolBar.setTitle(R.string.speak_engine)
         ATH.applyEdgeEffectColor(recyclerView)
         recyclerView.layoutManager = LinearLayoutManager(requireContext())
-        adapter = Adapter(requireContext())
         recyclerView.adapter = adapter
         tvFooterLeft.setText(R.string.system_tts)
         tvFooterLeft.visible()

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

@@ -36,12 +36,13 @@ import kotlinx.coroutines.launch
 import java.util.*
 
 class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
+
     private val importTocRuleKey = "tocRuleUrl"
-    private lateinit var adapter: TocRegexAdapter
-    var selectedName: String? = null
-    private var durRegex: String? = null
     private val viewModel: TocRegexViewModel by viewModels()
     private val binding by viewBinding(DialogTocRegexBinding::bind)
+    private val adapter by lazy { TocRegexAdapter(requireContext()) }
+    var selectedName: String? = null
+    private var durRegex: String? = null
 
     override fun onStart() {
         super.onStart()
@@ -69,7 +70,6 @@ class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     }
 
     private fun initView() = binding.run {
-        adapter = TocRegexAdapter(requireContext())
         recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         recyclerView.adapter = adapter
         val itemTouchCallback = ItemTouchCallback(adapter)

app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt

@@ -42,11 +42,13 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
     override val binding by viewBinding(ActivityBookSearchBinding::inflate)
     override val viewModel by viewModels<SearchViewModel>()
 
-    lateinit var adapter: SearchAdapter
-    private lateinit var bookAdapter: BookAdapter
-    private lateinit var historyKeyAdapter: HistoryKeyAdapter
-    private lateinit var loadMoreView: LoadMoreView
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { SearchAdapter(this, this) }
+    private val bookAdapter by lazy { BookAdapter(this, this) }
+    private val historyKeyAdapter by lazy { HistoryKeyAdapter(this, this) }
+    private val loadMoreView by lazy { LoadMoreView(this) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private var historyFlowJob: Job? = null
     private var booksFlowJob: Job? = null
     private var menu: Menu? = null
@@ -55,7 +57,6 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.llHistory.setBackgroundColor(backgroundColor)
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         initRecyclerView()
         initSearchView()
         initOtherView()
@@ -142,13 +143,10 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
         ATH.applyEdgeEffectColor(binding.recyclerView)
         ATH.applyEdgeEffectColor(binding.rvBookshelfSearch)
         ATH.applyEdgeEffectColor(binding.rvHistoryKey)
-        bookAdapter = BookAdapter(this, this)
         binding.rvBookshelfSearch.layoutManager = FlexboxLayoutManager(this)
         binding.rvBookshelfSearch.adapter = bookAdapter
-        historyKeyAdapter = HistoryKeyAdapter(this, this)
         binding.rvHistoryKey.layoutManager = FlexboxLayoutManager(this)
         binding.rvHistoryKey.adapter = historyKeyAdapter
-        adapter = SearchAdapter(this, this)
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
         binding.recyclerView.adapter = adapter
         adapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
@@ -166,7 +164,6 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
                 }
             }
         })
-        loadMoreView = LoadMoreView(this)
         binding.recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 super.onScrolled(recyclerView, dx, dy)

app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt

@@ -35,15 +35,16 @@ class SearchContentActivity :
 
     override val binding by viewBinding(ActivitySearchContentBinding::inflate)
     override val viewModel by viewModels<SearchContentViewModel>()
-    lateinit var adapter: SearchContentAdapter
-    private lateinit var mLayoutManager: UpLinearLayoutManager
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { SearchContentAdapter(this, this) }
+    private val mLayoutManager by lazy { UpLinearLayoutManager(this) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private var searchResultCounts = 0
     private var durChapterIndex = 0
     private var searchResultList: MutableList<SearchResult> = mutableListOf()
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         val bbg = bottomBackground
         val btc = getPrimaryTextColor(ColorUtils.isColorLight(bbg))
         binding.llSearchBaseInfo.setBackgroundColor(bbg)
@@ -81,8 +82,6 @@ class SearchContentActivity :
     }
 
     private fun initRecyclerView() {
-        adapter = SearchContentAdapter(this, this)
-        mLayoutManager = UpLinearLayoutManager(this)
         binding.recyclerView.layoutManager = mLayoutManager
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt

@@ -24,7 +24,7 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
     override val binding by viewBinding(ActivitySourceDebugBinding::inflate)
     override val viewModel by viewModels<BookSourceDebugModel>()
 
-    private lateinit var adapter: BookSourceDebugAdapter
+    private val adapter by lazy { BookSourceDebugAdapter(this) }
     private val searchView: SearchView by lazy {
         binding.titleBar.findViewById(R.id.search_view)
     }
@@ -52,7 +52,6 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
 
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
-        adapter = BookSourceDebugAdapter(this)
         binding.recyclerView.adapter = adapter
         binding.rotateLoading.loadingColor = accentColor
     }

app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt

@@ -49,8 +49,10 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     override val binding by viewBinding(ActivityBookSourceBinding::inflate)
     override val viewModel by viewModels<BookSourceViewModel>()
     private val importRecordKey = "bookSourceRecordKey"
-    private lateinit var adapter: BookSourceAdapter
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { BookSourceAdapter(this, this) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private var sourceFlowJob: Job? = null
     private val groups = linkedSetOf<String>()
     private var groupMenu: SubMenu? = null
@@ -86,7 +88,6 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         initRecyclerView()
         initSearchView()
         upBookSource()
@@ -179,7 +180,6 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
-        adapter = BookSourceAdapter(this, this)
         binding.recyclerView.adapter = adapter
         // When this page is opened, it is in selection mode
         val dragSelectTouchHelper =

app/src/main/java/io/legado/app/ui/book/source/manage/GroupManageDialog.kt

@@ -34,8 +34,8 @@ import kotlinx.coroutines.launch
 
 class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private val viewModel: BookSourceViewModel by activityViewModels()
-    private lateinit var adapter: GroupAdapter
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
+    private val adapter by lazy { GroupAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -58,7 +58,6 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         binding.toolBar.inflateMenu(R.menu.group_manage)
         binding.toolBar.menu.applyTint(requireContext())
         binding.toolBar.setOnMenuItemClickListener(this)
-        adapter = GroupAdapter(requireContext())
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/toc/BookmarkFragment.kt

@@ -24,7 +24,7 @@ class BookmarkFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_bookmark
     TocViewModel.BookmarkCallBack {
     override val viewModel by activityViewModels<TocViewModel>()
     private val binding by viewBinding(FragmentBookmarkBinding::bind)
-    private lateinit var adapter: BookmarkAdapter
+    private val adapter by lazy { BookmarkAdapter(requireContext(), this) }
     private var bookmarkFlowJob: Job? = null
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
@@ -37,7 +37,6 @@ class BookmarkFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_bookmark
 
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
-        adapter = BookmarkAdapter(requireContext(), this)
         binding.recyclerView.layoutManager = LinearLayoutManager(requireContext())
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         binding.recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/book/toc/ChapterListFragment.kt

@@ -34,7 +34,7 @@ class ChapterListFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_chapt
     TocViewModel.ChapterListCallBack {
     override val viewModel by activityViewModels<TocViewModel>()
     private val binding by viewBinding(FragmentChapterListBinding::bind)
-    lateinit var adapter: ChapterListAdapter
+    private val adapter by lazy { ChapterListAdapter(requireContext(), this) }
     private var durChapterIndex = 0
     private lateinit var mLayoutManager: UpLinearLayoutManager
     private var tocFlowJob: Job? = null
@@ -56,7 +56,6 @@ class ChapterListFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_chapt
     }
 
     private fun initRecyclerView() {
-        adapter = ChapterListAdapter(requireContext(), this)
         mLayoutManager = UpLinearLayoutManager(requireContext())
         binding.recyclerView.layoutManager = mLayoutManager
         binding.recyclerView.addItemDecoration(VerticalDivider(requireContext()))

app/src/main/java/io/legado/app/ui/config/ThemeListDialog.kt

@@ -1,5 +1,6 @@
 package io.legado.app.ui.config
 
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.MenuItem
@@ -22,7 +23,7 @@ import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class ThemeListDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
-    private lateinit var adapter: Adapter
+    private val adapter by lazy { Adapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -47,7 +48,6 @@ class ThemeListDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     }
 
     private fun initView() = binding.run {
-        adapter = Adapter()
         recyclerView.layoutManager = LinearLayoutManager(requireContext())
         recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         recyclerView.adapter = adapter
@@ -93,8 +93,8 @@ class ThemeListDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
         requireContext().share(json, "主题分享")
     }
 
-    inner class Adapter :
-        RecyclerAdapter<ThemeConfig.Config, ItemThemeConfigBinding>(requireContext()) {
+    inner class Adapter(context: Context) :
+        RecyclerAdapter<ThemeConfig.Config, ItemThemeConfigBinding>(context) {
 
         override fun getViewBinding(parent: ViewGroup): ItemThemeConfigBinding {
             return ItemThemeConfigBinding.inflate(inflater, parent, false)

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

@@ -37,8 +37,10 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf),
     SearchView.OnQueryTextListener {
 
     private val binding by viewBinding(FragmentBookshelfBinding::bind)
-    private lateinit var adapter: FragmentStatePagerAdapter
-    private lateinit var tabLayout: TabLayout
+    private val adapter by lazy { TabFragmentPageAdapter(childFragmentManager) }
+    private val tabLayout: TabLayout by lazy {
+        binding.titleBar.findViewById(R.id.tab_layout)
+    }
     private val bookGroups = mutableListOf<BookGroup>()
     private val fragmentMap = hashMapOf<Long, BooksFragment>()
 
@@ -51,7 +53,6 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf),
         }
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
-        tabLayout = binding.titleBar.findViewById(R.id.tab_layout)
         setSupportToolbar(binding.titleBar.toolbar)
         initView()
         initBookGroupData()
@@ -67,7 +68,6 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf),
         tabLayout.setSelectedTabIndicatorColor(requireContext().accentColor)
         tabLayout.setupWithViewPager(binding.viewPagerBookshelf)
         binding.viewPagerBookshelf.offscreenPageLimit = 1
-        adapter = TabFragmentPageAdapter(childFragmentManager)
         binding.viewPagerBookshelf.adapter = adapter
     }
 

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

@@ -38,15 +38,16 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
     ExploreAdapter.CallBack {
     override val viewModel by viewModels<ExploreViewModel>()
     private val binding by viewBinding(FragmentExploreBinding::bind)
-    private lateinit var adapter: ExploreAdapter
-    private lateinit var linearLayoutManager: LinearLayoutManager
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { ExploreAdapter(requireContext(), lifecycleScope, this) }
+    private val linearLayoutManager by lazy { LinearLayoutManager(context) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private val groups = linkedSetOf<String>()
     private var exploreFlowJob: Job? = null
     private var groupsMenu: SubMenu? = null
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         setSupportToolbar(binding.titleBar.toolbar)
         initSearchView()
         initRecyclerView()
@@ -86,9 +87,7 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
 
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.rvFind)
-        linearLayoutManager = LinearLayoutManager(context)
         binding.rvFind.layoutManager = linearLayoutManager
-        adapter = ExploreAdapter(requireContext(), lifecycleScope, this)
         binding.rvFind.adapter = adapter
         adapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
 

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

@@ -40,14 +40,15 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
     RssAdapter.CallBack {
     private val binding by viewBinding(FragmentRssBinding::bind)
     override val viewModel by viewModels<RssSourceViewModel>()
-    private lateinit var adapter: RssAdapter
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { RssAdapter(requireContext(), this) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private var rssFlowJob: Job? = null
     private val groups = linkedSetOf<String>()
     private var groupsMenu: SubMenu? = null
 
     override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         setSupportToolbar(binding.titleBar.toolbar)
         initSearchView()
         initRecyclerView()
@@ -106,7 +107,6 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
 
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
-        adapter = RssAdapter(requireContext(), this)
         binding.recyclerView.adapter = adapter
         adapter.addHeaderView {
             ItemRssBinding.inflate(layoutInflater, it, false).apply {

app/src/main/java/io/legado/app/ui/replace/GroupManageDialog.kt

@@ -30,9 +30,10 @@ import kotlinx.coroutines.launch
 
 
 class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
+
     private val viewModel: ReplaceRuleViewModel by activityViewModels()
-    private lateinit var adapter: GroupAdapter
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
+    private val adapter by lazy { GroupAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -60,7 +61,6 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         toolBar.inflateMenu(R.menu.group_manage)
         toolBar.menu.applyTint(requireContext())
         toolBar.setOnMenuItemClickListener(this@GroupManageDialog)
-        adapter = GroupAdapter(requireContext())
         recyclerView.layoutManager = LinearLayoutManager(requireContext())
         recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt

@@ -50,8 +50,10 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
     override val binding by viewBinding(ActivityReplaceRuleBinding::inflate)
     override val viewModel by viewModels<ReplaceRuleViewModel>()
     private val importRecordKey = "replaceRuleRecordKey"
-    private lateinit var adapter: ReplaceRuleAdapter
-    private lateinit var searchView: SearchView
+    private val adapter by lazy { ReplaceRuleAdapter(this, this) }
+    private val searchView: SearchView by lazy {
+        binding.titleBar.findViewById(R.id.search_view)
+    }
     private var groups = hashSetOf<String>()
     private var groupMenu: SubMenu? = null
     private var replaceRuleFlowJob: Job? = null
@@ -90,7 +92,6 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
     }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        searchView = binding.titleBar.findViewById(R.id.search_view)
         initRecyclerView()
         initSearchView()
         initSelectActionView()
@@ -112,7 +113,6 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
         binding.recyclerView.layoutManager = LinearLayoutManager(this)
-        adapter = ReplaceRuleAdapter(this, this)
         binding.recyclerView.adapter = adapter
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
         val itemTouchCallback = ItemTouchCallback(adapter)

app/src/main/java/io/legado/app/ui/rss/article/RssArticlesFragment.kt

@@ -43,8 +43,16 @@ class RssArticlesFragment : VMBaseFragment<RssArticlesViewModel>(R.layout.fragme
     private val binding by viewBinding(FragmentRssArticlesBinding::bind)
     private val activityViewModel by activityViewModels<RssSortViewModel>()
     override val viewModel by viewModels<RssArticlesViewModel>()
-    lateinit var adapter: BaseRssArticlesAdapter<*>
-    private lateinit var loadMoreView: LoadMoreView
+    private val adapter: BaseRssArticlesAdapter<*> by lazy {
+        when (activityViewModel.rssSource?.articleStyle) {
+            1 -> RssArticlesAdapter1(requireContext(), this@RssArticlesFragment)
+            2 -> RssArticlesAdapter2(requireContext(), this@RssArticlesFragment)
+            else -> RssArticlesAdapter(requireContext(), this@RssArticlesFragment)
+        }
+    }
+    private val loadMoreView: LoadMoreView by lazy {
+        LoadMoreView(requireContext())
+    }
     private var articlesFlowJob: Job? = null
     override val isGridLayout: Boolean
         get() = activityViewModel.isGridLayout
@@ -64,15 +72,8 @@ class RssArticlesFragment : VMBaseFragment<RssArticlesViewModel>(R.layout.fragme
         } else {
             recyclerView.addItemDecoration(VerticalDivider(requireContext()))
             LinearLayoutManager(requireContext())
-
-        }
-        adapter = when (activityViewModel.rssSource?.articleStyle) {
-            1 -> RssArticlesAdapter1(requireContext(), this@RssArticlesFragment)
-            2 -> RssArticlesAdapter2(requireContext(), this@RssArticlesFragment)
-            else -> RssArticlesAdapter(requireContext(), this@RssArticlesFragment)
         }
         recyclerView.adapter = adapter
-        loadMoreView = LoadMoreView(requireContext())
         adapter.addFooterView {
             ViewLoadMoreBinding.bind(loadMoreView)
         }

app/src/main/java/io/legado/app/ui/rss/article/RssSortActivity.kt

@@ -29,7 +29,7 @@ class RssSortActivity : VMBaseActivity<ActivityRssArtivlesBinding, RssSortViewMo
 
     override val binding by viewBinding(ActivityRssArtivlesBinding::inflate)
     override val viewModel by viewModels<RssSortViewModel>()
-    private lateinit var adapter: TabFragmentPageAdapter
+    private val adapter by lazy { TabFragmentPageAdapter() }
     private val sortList = mutableListOf<Pair<String, String>>()
     private val fragmentMap = hashMapOf<String, Fragment>()
     private val editSourceResult = registerForActivityResult(
@@ -43,7 +43,6 @@ class RssSortActivity : VMBaseActivity<ActivityRssArtivlesBinding, RssSortViewMo
     }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        adapter = TabFragmentPageAdapter()
         binding.viewPager.adapter = adapter
         binding.tabLayout.setupWithViewPager(binding.viewPager)
         viewModel.titleLiveData.observe(this, {

app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt

@@ -18,7 +18,7 @@ class RssFavoritesActivity : BaseActivity<ActivityRssFavoritesBinding>(),
     RssFavoritesAdapter.CallBack {
 
     override val binding by viewBinding(ActivityRssFavoritesBinding::inflate)
-    private lateinit var adapter: RssFavoritesAdapter
+    private val adapter by lazy { RssFavoritesAdapter(this, this) }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
@@ -29,7 +29,6 @@ class RssFavoritesActivity : BaseActivity<ActivityRssFavoritesBinding>(),
         binding.recyclerView.let {
             it.layoutManager = LinearLayoutManager(this)
             it.addItemDecoration(VerticalDivider(this))
-            adapter = RssFavoritesAdapter(this, this)
             it.adapter = adapter
         }
     }

app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt

@@ -22,7 +22,7 @@ class RssSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, RssSou
     override val binding by viewBinding(ActivitySourceDebugBinding::inflate)
     override val viewModel by viewModels<RssSourceDebugModel>()
 
-    private lateinit var adapter: RssSourceDebugAdapter
+    private val adapter by lazy { RssSourceDebugAdapter(this) }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initRecyclerView()
@@ -57,7 +57,6 @@ class RssSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, RssSou
 
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
-        adapter = RssSourceDebugAdapter(this)
         binding.recyclerView.adapter = adapter
         binding.rotateLoading.loadingColor = accentColor
     }

app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt

@@ -32,8 +32,8 @@ import kotlinx.coroutines.launch
 
 class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private val viewModel: RssSourceViewModel by activityViewModels()
-    private lateinit var adapter: GroupAdapter
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
+    private val adapter by lazy { GroupAdapter(requireContext()) }
 
     override fun onStart() {
         super.onStart()
@@ -55,7 +55,6 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
         toolBar.inflateMenu(R.menu.group_manage)
         toolBar.menu.applyTint(requireContext())
         toolBar.setOnMenuItemClickListener(this@GroupManageDialog)
-        adapter = GroupAdapter(requireContext())
         recyclerView.layoutManager = LinearLayoutManager(requireContext())
         recyclerView.addItemDecoration(VerticalDivider(requireContext()))
         recyclerView.adapter = adapter

app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt

@@ -46,7 +46,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
     override val binding by viewBinding(ActivityRssSourceBinding::inflate)
     override val viewModel by viewModels<RssSourceViewModel>()
     private val importRecordKey = "rssSourceRecordKey"
-    private lateinit var adapter: RssSourceAdapter
+    private val adapter by lazy { RssSourceAdapter(this, this) }
     private var sourceFlowJob: Job? = null
     private var groups = hashSetOf<String>()
     private var groupMenu: SubMenu? = null
@@ -142,7 +142,6 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
     private fun initRecyclerView() {
         ATH.applyEdgeEffectColor(binding.recyclerView)
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
-        adapter = RssSourceAdapter(this, this)
         binding.recyclerView.adapter = adapter
         // When this page is opened, it is in selection mode
         val dragSelectTouchHelper: DragSelectTouchHelper =

app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt

@@ -30,7 +30,7 @@ class RuleSubActivity : BaseActivity<ActivityRuleSubBinding>(),
     RuleSubAdapter.Callback {
 
     override val binding by viewBinding(ActivityRuleSubBinding::inflate)
-    private lateinit var adapter: RuleSubAdapter
+    private val adapter by lazy { RuleSubAdapter(this, this) }
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
@@ -53,7 +53,6 @@ class RuleSubActivity : BaseActivity<ActivityRuleSubBinding>(),
     }
 
     private fun initView() {
-        adapter = RuleSubAdapter(this, this)
         binding.recyclerView.adapter = adapter
         val itemTouchCallback = ItemTouchCallback(adapter)
         itemTouchCallback.isCanDrag = true

app/src/main/java/io/legado/app/ui/widget/dialog/TextListDialog.kt

@@ -30,7 +30,7 @@ class TextListDialog : BaseDialogFragment() {
     }
 
     private val binding by viewBinding(DialogRecyclerViewBinding::bind)
-    lateinit var adapter: TextAdapter
+    private val adapter by lazy { TextAdapter(requireContext()) }
     private var values: ArrayList<String>? = null
 
     override fun onStart() {
@@ -53,7 +53,6 @@ class TextListDialog : BaseDialogFragment() {
             values = it.getStringArrayList("values")
         }
         recyclerView.layoutManager = LinearLayoutManager(requireContext())
-        adapter = TextAdapter(requireContext())
         recyclerView.adapter = adapter
         adapter.setItems(values)
     }

app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt

@@ -37,8 +37,8 @@ class FontSelectDialog : BaseDialogFragment(),
     private val fontFolder by lazy {
         FileUtils.createFolderIfNotExist(appCtx.filesDir, "Fonts")
     }
-    private var adapter: FontAdapter? = null
     private val binding by viewBinding(DialogFontSelectBinding::bind)
+    private val adapter by lazy { FontAdapter(requireContext(), this) }
     private val selectFontDir = registerForActivityResult(HandleFileContract()) { uri ->
         uri ?: return@registerForActivityResult
         if (uri.toString().isContentScheme()) {
@@ -83,7 +83,6 @@ class FontSelectDialog : BaseDialogFragment(),
         binding.toolBar.inflateMenu(R.menu.font_select)
         binding.toolBar.menu.applyTint(requireContext())
         binding.toolBar.setOnMenuItemClickListener(this)
-        adapter = FontAdapter(requireContext(), this)
         binding.recyclerView.layoutManager = LinearLayoutManager(context)
         binding.recyclerView.adapter = adapter
 
@@ -165,7 +164,7 @@ class FontSelectDialog : BaseDialogFragment(),
             }
             mergeFontItems(fontItems, getLocalFonts())
         }.onSuccess {
-            adapter?.setItems(it)
+            adapter.setItems(it)
         }.onError {
             toastOnUi("getFontFiles:${it.localizedMessage}")
         }
@@ -200,7 +199,7 @@ class FontSelectDialog : BaseDialogFragment(),
             }
             mergeFontItems(fontItems, getLocalFonts())
         }.onSuccess {
-            adapter?.setItems(it)
+            adapter.setItems(it)
         }.onError {
             toastOnUi("getFontFiles:${it.localizedMessage}")
         }