采用Flow

app/src/main/java/io/legado/app/base/BaseActivity.kt

@@ -24,9 +24,6 @@ import io.legado.app.lib.theme.backgroundColor
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.widget.TitleBar
 import io.legado.app.utils.*
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.MainScope
-import kotlinx.coroutines.cancel
 
 
 abstract class BaseActivity<VB : ViewBinding>(
@@ -35,8 +32,7 @@ abstract class BaseActivity<VB : ViewBinding>(
     private val toolBarTheme: Theme = Theme.Auto,
     private val transparent: Boolean = false,
     private val imageBg: Boolean = true
-) : AppCompatActivity(),
+) : AppCompatActivity() {
-    CoroutineScope by MainScope() {
 
     protected abstract val binding: VB
 
@@ -120,11 +116,6 @@ abstract class BaseActivity<VB : ViewBinding>(
         setupSystemBar()
     }
 
-    override fun onDestroy() {
-        super.onDestroy()
-        cancel()
-    }
-
     abstract fun onActivityCreated(savedInstanceState: Bundle?)
 
     final override fun onCreateOptionsMenu(menu: Menu?): Boolean {

app/src/main/java/io/legado/app/base/BaseDialogFragment.kt

@@ -4,23 +4,14 @@ import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentManager
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.theme.ThemeStore
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
 import kotlin.coroutines.CoroutineContext
 
-
+abstract class BaseDialogFragment : DialogFragment() {
-abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
-    override val coroutineContext: CoroutineContext
-        get() = job + Dispatchers.Main
-    private lateinit var job: Job
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        job = Job()
-    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -39,13 +30,8 @@ abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
         }
     }
 
-    override fun onDestroy() {
-        super.onDestroy()
-        job.cancel()
-    }
-
     fun <T> execute(
-        scope: CoroutineScope = this,
+        scope: CoroutineScope = lifecycleScope,
         context: CoroutineContext = Dispatchers.IO,
         block: suspend CoroutineScope.() -> T
     ) = Coroutine.async(scope, context) { block() }

app/src/main/java/io/legado/app/base/BaseFragment.kt

@@ -3,22 +3,20 @@ package io.legado.app.base
 import android.annotation.SuppressLint
 import android.content.res.Configuration
 import android.os.Bundle
-import android.view.*
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import android.view.View
 import androidx.appcompat.view.SupportMenuInflater
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.Fragment
 import io.legado.app.R
 import io.legado.app.ui.widget.TitleBar
 import io.legado.app.utils.applyTint
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.Job
-import kotlin.coroutines.CoroutineContext
 
 @Suppress("MemberVisibilityCanBePrivate")
-abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
+abstract class BaseFragment(layoutID: Int) : Fragment(layoutID) {
-    CoroutineScope {
+
-    lateinit var job: Job
     var supportToolbar: Toolbar? = null
         private set
 
@@ -26,18 +24,6 @@ abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
         @SuppressLint("RestrictedApi")
         get() = SupportMenuInflater(requireContext())
 
-    override val coroutineContext: CoroutineContext
-        get() = job + Dispatchers.Main
-
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
-        job = Job()
-        return super.onCreateView(inflater, container, savedInstanceState)
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         onMultiWindowModeChanged()
@@ -64,11 +50,6 @@ abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
         }
     }
 
-    override fun onDestroy() {
-        super.onDestroy()
-        job.cancel()
-    }
-
     fun setSupportToolbar(toolbar: Toolbar) {
         supportToolbar = toolbar
         supportToolbar?.let {

app/src/main/java/io/legado/app/base/BaseViewModel.kt

@@ -4,20 +4,22 @@ import android.app.Application
 import android.content.Context
 import androidx.annotation.CallSuper
 import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
 import io.legado.app.App
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.utils.toastOnUi
-import kotlinx.coroutines.*
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Deferred
+import kotlinx.coroutines.Dispatchers
 import kotlin.coroutines.CoroutineContext
 
 @Suppress("unused")
-open class BaseViewModel(application: Application) : AndroidViewModel(application),
+open class BaseViewModel(application: Application) : AndroidViewModel(application) {
-    CoroutineScope by MainScope() {
 
     val context: Context by lazy { this.getApplication<App>() }
 
     fun <T> execute(
-        scope: CoroutineScope = this,
+        scope: CoroutineScope = viewModelScope,
         context: CoroutineContext = Dispatchers.IO,
         block: suspend CoroutineScope.() -> T
     ): Coroutine<T> {
@@ -25,7 +27,7 @@ open class BaseViewModel(application: Application) : AndroidViewModel(applicatio
     }
 
     fun <R> submit(
-        scope: CoroutineScope = this,
+        scope: CoroutineScope = viewModelScope,
         context: CoroutineContext = Dispatchers.IO,
         block: suspend CoroutineScope.() -> Deferred<R>
     ): Coroutine<R> {
@@ -35,7 +37,6 @@ open class BaseViewModel(application: Application) : AndroidViewModel(applicatio
     @CallSuper
     override fun onCleared() {
         super.onCleared()
-        cancel()
     }
 
     open fun toastOnUi(message: Int) {

app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt

@@ -1,9 +1,9 @@
 package io.legado.app.data.dao
 
-import androidx.lifecycle.LiveData
 import androidx.room.*
 import io.legado.app.constant.BookType
 import io.legado.app.data.entities.BookGroup
+import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface BookGroupDao {
@@ -15,7 +15,7 @@ interface BookGroupDao {
     fun getByName(groupName: String): BookGroup?
 
     @Query("SELECT * FROM book_groups ORDER BY `order`")
-    fun liveDataAll(): LiveData<List<BookGroup>>
+    fun liveDataAll(): Flow<List<BookGroup>>
 
     @Query(
         """
@@ -24,13 +24,12 @@ interface BookGroupDao {
         or (groupId = -3 and show > 0 and (select count(bookUrl) from books where type = ${BookType.audio}) > 0)
         or (groupId = -2 and show > 0 and (select count(bookUrl) from books where origin = '${BookType.local}') > 0)
         or (groupId = -1 and show > 0)
-        ORDER BY `order`
+        ORDER BY `order`"""
-    """
     )
-    fun liveDataShow(): LiveData<List<BookGroup>>
+    fun liveDataShow(): Flow<List<BookGroup>>
 
     @Query("SELECT * FROM book_groups where groupId >= 0 ORDER BY `order`")
-    fun liveDataSelect(): LiveData<List<BookGroup>>
+    fun liveDataSelect(): Flow<List<BookGroup>>
 
     @get:Query("SELECT sum(groupId) FROM book_groups where groupId >= 0")
     val idsSum: Long

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

@@ -5,6 +5,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import android.view.ViewGroup
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
 import io.legado.app.base.adapter.ItemViewHolder
@@ -72,7 +73,7 @@ class ReadRecordActivity : BaseActivity<ActivityReadRecordBinding>() {
     }
 
     private fun initData() {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             val allTime = appDb.readRecordDao.allTime
             withContext(Main) {
                 binding.readRecord.tvReadTime.text = formatDuring(allTime)
@@ -115,7 +116,7 @@ class ReadRecordActivity : BaseActivity<ActivityReadRecordBinding>() {
             binding.apply {
                 root.setOnClickListener {
                     val item = getItem(holder.layoutPosition) ?: return@setOnClickListener
-                    launch {
+                    lifecycleScope.launch {
                         val book = withContext(IO) {
                             appDb.bookDao.findByName(item.bookName).firstOrNull()
                         }

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

@@ -5,7 +5,7 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.activity.viewModels
 import androidx.appcompat.widget.PopupMenu
-import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
@@ -46,14 +46,13 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
     private val groupRequestCode = 22
     private val addToGroupRequestCode = 34
     private lateinit var adapter: ArrangeBookAdapter
-    private var groupLiveData: LiveData<List<BookGroup>>? = null
     private var booksFlowJob: Job? = null
     private var menu: Menu? = null
     private var groupId: Long = -1
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         groupId = intent.getLongExtra("groupId", -1)
-        launch {
+        lifecycleScope.launch {
             binding.titleBar.subtitle = withContext(IO) {
                 appDb.bookGroupDao.getByID(groupId)?.groupName
                     ?: getString(R.string.no_group)
@@ -109,19 +108,19 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
     }
 
     private fun initGroupData() {
-        groupLiveData?.removeObservers(this)
+        lifecycleScope.launch {
-        groupLiveData = appDb.bookGroupDao.liveDataAll()
+            appDb.bookGroupDao.liveDataAll().collect {
-        groupLiveData?.observe(this, {
                 groupList.clear()
                 groupList.addAll(it)
                 adapter.notifyDataSetChanged()
                 upMenu()
-        })
+            }
+        }
     }
 
     private fun initBookData() {
         booksFlowJob?.cancel()
-        booksFlowJob = launch {
+        booksFlowJob = lifecycleScope.launch {
             when (groupId) {
                 AppConst.bookGroupAllId -> appDb.bookDao.observeAll()
                 AppConst.bookGroupLocalId -> appDb.bookDao.observeLocal()

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

@@ -4,7 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import androidx.activity.viewModels
-import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.android.material.snackbar.Snackbar
 import io.legado.app.R
@@ -46,7 +46,6 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
 
     private val exportBookPathKey = "exportBookPath"
     lateinit var adapter: CacheAdapter
-    private var groupLiveData: LiveData<List<BookGroup>>? = null
     private var booksFlowJob: Job? = null
     private var menu: Menu? = null
     private var exportPosition = -1
@@ -68,7 +67,7 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         groupId = intent.getLongExtra("groupId", -1)
-        launch {
+        lifecycleScope.launch {
             binding.titleBar.subtitle = withContext(IO) {
                 appDb.bookGroupDao.getByID(groupId)?.groupName
                     ?: getString(R.string.no_group)
@@ -150,7 +149,7 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
 
     private fun initBookData() {
         booksFlowJob?.cancel()
-        booksFlowJob = launch {
+        booksFlowJob = lifecycleScope.launch {
             when (groupId) {
                 AppConst.bookGroupAllId -> appDb.bookDao.observeAll()
                 AppConst.bookGroupLocalId -> appDb.bookDao.observeLocal()
@@ -176,18 +175,18 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
     }
 
     private fun initGroupData() {
-        groupLiveData?.removeObservers(this)
+        lifecycleScope.launch {
-        groupLiveData = appDb.bookGroupDao.liveDataAll()
+            appDb.bookGroupDao.liveDataAll().collect {
-        groupLiveData?.observe(this, {
                 groupList.clear()
                 groupList.addAll(it)
                 adapter.notifyDataSetChanged()
                 upMenu()
-        })
+            }
+        }
     }
 
     private fun initCacheSize(books: List<Book>) {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             books.forEach { book ->
                 val chapterCaches = hashSetOf<String>()
                 val cacheNames = BookHelp.getChapterFiles(book)

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

@@ -5,6 +5,7 @@ import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.constant.AppPattern
 import io.legado.app.data.appDb
@@ -102,7 +103,7 @@ class ChangeCoverViewModel(application: Application) : BaseViewModel(application
             return
         }
         val task = WebBook(source)
-            .searchBook(this, name, context = searchPool!!)
+            .searchBook(viewModelScope, name, context = searchPool!!)
             .timeout(60000L)
             .onSuccess(Dispatchers.IO) {
                 if (it.isNotEmpty()) {

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

@@ -6,6 +6,7 @@ import androidx.appcompat.widget.SearchView
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
@@ -150,7 +151,7 @@ class ChangeSourceDialog : BaseDialogFragment(),
         viewModel.searchBooksLiveData.observe(viewLifecycleOwner, {
             adapter.setItems(it)
         })
-        launch {
+        lifecycleScope.launch {
             appDb.bookSourceDao.liveGroupEnabled().collect {
                 groups.clear()
                 it.map { group ->

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

@@ -5,6 +5,7 @@ import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.constant.AppPattern
 import io.legado.app.constant.PreferKey
@@ -129,7 +130,7 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
         val source = bookSourceList[searchIndex]
         val webBook = WebBook(source)
         val task = webBook
-            .searchBook(this, name, context = searchPool!!)
+            .searchBook(viewModelScope, name, context = searchPool!!)
             .timeout(60000L)
             .onSuccess(IO) {
                 it.forEach { searchBook ->
@@ -168,7 +169,7 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
     }
 
     private fun loadBookInfo(webBook: WebBook, book: Book) {
-        webBook.getBookInfo(this, book)
+        webBook.getBookInfo(viewModelScope, book)
             .onSuccess {
                 if (context.getPrefBoolean(PreferKey.changeSourceLoadToc)) {
                     loadBookToc(webBook, book)
@@ -184,7 +185,7 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
     }
 
     private fun loadBookToc(webBook: WebBook, book: Book) {
-        webBook.getChapterList(this, book)
+        webBook.getChapterList(viewModelScope, book)
             .onSuccess(IO) { chapters ->
                 if (chapters.isNotEmpty()) {
                     book.latestChapterTitle = chapters.last().title

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

@@ -3,6 +3,7 @@ package io.legado.app.ui.book.explore
 import android.app.Application
 import android.content.Intent
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.BookSource
@@ -34,7 +35,7 @@ class ExploreShowViewModel(application: Application) : BaseViewModel(application
         val source = bookSource
         val url = exploreUrl
         if (source != null && url != null) {
-            WebBook(source).exploreBook(this, url, page)
+            WebBook(source).exploreBook(viewModelScope, url, page)
                 .timeout(30000L)
                 .onSuccess(IO) { searchBooks ->
                     booksData.postValue(searchBooks)

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

@@ -9,6 +9,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -32,6 +33,8 @@ import io.legado.app.utils.getSize
 import io.legado.app.utils.requestInputMethod
 import io.legado.app.utils.viewbindingdelegate.viewBinding
 import io.legado.app.utils.visible
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
 
 
 class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
@@ -77,9 +80,11 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     }
 
     private fun initData() {
-        appDb.bookGroupDao.liveDataAll().observe(viewLifecycleOwner, {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataAll().collect {
                 adapter.setItems(it)
-        })
+            }
+        }
     }
 
     private fun initMenu() {

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

@@ -10,6 +10,7 @@ import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -32,6 +33,8 @@ import io.legado.app.utils.applyTint
 import io.legado.app.utils.getSize
 import io.legado.app.utils.requestInputMethod
 import io.legado.app.utils.viewbindingdelegate.viewBinding
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
 
 
 class GroupSelectDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
@@ -105,9 +108,11 @@ class GroupSelectDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     }
 
     private fun initData() {
-        appDb.bookGroupDao.liveDataSelect().observe(viewLifecycleOwner, {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataSelect().collect {
                 adapter.setItems(it)
-        })
+            }
+        }
     }
 
     override fun onMenuItemClick(item: MenuItem?): Boolean {

app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt

@@ -10,6 +10,7 @@ import android.widget.CheckBox
 import android.widget.LinearLayout
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
+import androidx.lifecycle.lifecycleScope
 import com.bumptech.glide.RequestBuilder
 import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions
 import com.bumptech.glide.request.RequestOptions.bitmapTransform
@@ -53,7 +54,7 @@ class BookInfoActivity :
     private val tocActivityResult = registerForActivityResult(TocActivityResult()) {
         it?.let {
             viewModel.bookData.value?.let { book ->
-                launch {
+                lifecycleScope.launch {
                     withContext(IO) {
                         viewModel.durChapterIndex = it.first
                         book.durChapterIndex = it.first

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

@@ -9,6 +9,7 @@ import android.view.MenuItem
 import androidx.activity.viewModels
 import androidx.appcompat.widget.PopupMenu
 import androidx.documentfile.provider.DocumentFile
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
@@ -124,7 +125,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
     }
 
     private fun initData() {
-        launch {
+        lifecycleScope.launch {
             appDb.bookDao.observeLocalUri().collect {
                 adapter.upBookHas(it)
             }
@@ -187,7 +188,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
         binding.tvPath.text = path
         adapter.selectedUris.clear()
         adapter.clearItems()
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             val docList = DocumentUtils.listFiles(this@ImportBookActivity, lastDoc.uri)
             for (i in docList.lastIndex downTo 0) {
                 val item = docList[i]
@@ -251,7 +252,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
             adapter.clearItems()
             val lastDoc = subDocs.lastOrNull() ?: doc
             binding.refreshProgressBar.isAutoLoading = true
-            launch(IO) {
+            lifecycleScope.launch(IO) {
                 viewModel.scanDoc(lastDoc, true, find) {
                     launch {
                         binding.refreshProgressBar.isAutoLoading = false
@@ -266,7 +267,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
                 adapter.clearItems()
                 val file = File(path)
                 binding.refreshProgressBar.isAutoLoading = true
-                launch(IO) {
+                lifecycleScope.launch(IO) {
                     viewModel.scanFile(file, true, find) {
                         launch {
                             binding.refreshProgressBar.isAutoLoading = false
@@ -291,7 +292,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
     }
 
     private val find: (docItem: DocItem) -> Unit = {
-        launch {
+        lifecycleScope.launch {
             adapter.addItem(it)
         }
     }

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

@@ -13,6 +13,7 @@ import androidx.activity.result.contract.ActivityResultContracts
 import androidx.core.view.get
 import androidx.core.view.isVisible
 import androidx.core.view.size
+import androidx.lifecycle.lifecycleScope
 import com.jaredrummler.android.colorpicker.ColorPickerDialogListener
 import io.legado.app.BuildConfig
 import io.legado.app.R
@@ -108,7 +109,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
         TextActionMenu(this, this)
     }
 
-    override val scope: CoroutineScope get() = this
+    override val scope: CoroutineScope get() = lifecycleScope
     override val isInitFinish: Boolean get() = viewModel.isInitFinish
     override val isScroll: Boolean get() = binding.readView.isScroll
     private val mHandler = Handler(Looper.getMainLooper())
@@ -591,7 +592,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
         resetPageOffset: Boolean,
         success: (() -> Unit)?
     ) {
-        launch {
+        lifecycleScope.launch {
             autoPageProgress = 0
             binding.readView.upContent(relativePosition, resetPageOffset)
             binding.readMenu.setSeekPage(ReadBook.durPageIndex())
@@ -604,13 +605,13 @@ class ReadBookActivity : ReadBookBaseActivity(),
      * 更新视图
      */
     override fun upView() {
-        launch {
+        lifecycleScope.launch {
             binding.readMenu.upBookView()
         }
     }
 
     override fun upPageAnim() {
-        launch {
+        lifecycleScope.launch {
             binding.readView.upPageAnim()
         }
     }
@@ -620,7 +621,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
      */
     override fun pageChanged() {
         autoPageProgress = 0
-        launch {
+        lifecycleScope.launch {
             binding.readMenu.setSeekPage(ReadBook.durPageIndex())
         }
         mHandler.postDelayed(backupRunnable, 600000)
@@ -846,7 +847,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
                 viewModel.searchContentQuery
             )
             ReadBook.skipToPage(positions[0]) {
-                launch {
+                lifecycleScope.launch {
                     binding.readView.curPage.selectStartMoveIndex(0, positions[1], positions[2])
                     delay(20L)
                     when (positions[3]) {
@@ -936,7 +937,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
             }
         }
         observeEventSticky<Int>(EventBus.TTS_PROGRESS) { chapterStart ->
-            launch(IO) {
+            lifecycleScope.launch(IO) {
                 if (BaseReadAloudService.isPlay()) {
                     ReadBook.curTextChapter?.let { textChapter ->
                         val pageStart = chapterStart - ReadBook.durChapterPos

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

@@ -2,6 +2,7 @@ package io.legado.app.ui.book.read
 
 import android.app.Application
 import android.content.Intent
+import androidx.lifecycle.viewModelScope
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.appDb
@@ -104,7 +105,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
         if (book.isLocalBook()) {
             loadChapterList(book, changeDruChapterIndex)
         } else {
-            ReadBook.webBook?.getBookInfo(this, book, canReName = false)
+            ReadBook.webBook?.getBookInfo(viewModelScope, book, canReName = false)
                 ?.onSuccess {
                     loadChapterList(book, changeDruChapterIndex)
                 }
@@ -133,7 +134,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
                 ReadBook.upMsg("LoadTocError:${it.localizedMessage}")
             }
         } else {
-            ReadBook.webBook?.getChapterList(this, book)
+            ReadBook.webBook?.getChapterList(viewModelScope, book)
                 ?.onSuccess(IO) { cList ->
                     if (cList.isNotEmpty()) {
                         if (changeDruChapterIndex == null) {

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

@@ -11,6 +11,7 @@ import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.snackbar.Snackbar
@@ -222,7 +223,7 @@ class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
                     if (buttonView.isPressed) {
                         getItem(holder.layoutPosition)?.let {
                             it.enable = isChecked
-                            launch(IO) {
+                            lifecycleScope.launch(IO) {
                                 appDb.txtTocRuleDao.update(it)
                             }
                         }
@@ -233,7 +234,7 @@ class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
                 }
                 ivDelete.setOnClickListener {
                     getItem(holder.layoutPosition)?.let { item ->
-                        launch(IO) {
+                        lifecycleScope.launch(IO) {
                             appDb.txtTocRuleDao.delete(item)
                         }
                     }
@@ -255,7 +256,7 @@ class TocRegexDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
                 for ((index, item) in getItems().withIndex()) {
                     item.serialNumber = index + 1
                 }
-                launch(IO) {
+                lifecycleScope.launch(IO) {
                     appDb.txtTocRuleDao.update(*getItems().toTypedArray())
                 }
             }

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

@@ -11,6 +11,7 @@ import android.widget.TextView
 import androidx.activity.viewModels
 import androidx.appcompat.widget.SearchView
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.flexbox.FlexboxLayoutManager
@@ -192,7 +193,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
     }
 
     private fun initData() {
-        launch {
+        lifecycleScope.launch {
             appDb.bookSourceDao.liveGroupEnabled().collect {
                 groups.clear()
                 it.map { group ->
@@ -273,7 +274,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
      */
     private fun upHistory(key: String? = null) {
         booksFlowJob?.cancel()
-        booksFlowJob = launch {
+        booksFlowJob = lifecycleScope.launch {
             if (key.isNullOrBlank()) {
                 binding.tvBookShow.gone()
                 binding.rvBookshelfSearch.gone()
@@ -361,7 +362,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
      * 点击历史关键字
      */
     override fun searchHistory(key: String) {
-        launch {
+        lifecycleScope.launch {
             when {
                 searchView.query.toString() == key -> {
                     searchView.setQuery(key, true)

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

@@ -4,6 +4,7 @@ import android.app.Application
 import android.os.Handler
 import android.os.Looper
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.appDb
@@ -17,7 +18,7 @@ import kotlinx.coroutines.isActive
 class SearchViewModel(application: Application) : BaseViewModel(application),
     SearchBookModel.CallBack {
     val handler = Handler(Looper.getMainLooper())
-    private val searchBookModel = SearchBookModel(this, this)
+    private val searchBookModel = SearchBookModel(viewModelScope, this)
     var isSearchLiveData = MutableLiveData<Boolean>()
     var searchBookLiveData = MutableLiveData<List<SearchBook>>()
     var searchKey: String = ""
@@ -64,7 +65,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application),
     override fun onSearchSuccess(searchBooks: ArrayList<SearchBook>) {
         val precision = context.getPrefBoolean(PreferKey.precisionSearch)
         appDb.searchBookDao.insert(*searchBooks.toTypedArray())
-        mergeItems(this, searchBooks, precision)
+        mergeItems(viewModelScope, searchBooks, precision)
     }
 
     override fun onSearchFinish() {

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

@@ -5,6 +5,7 @@ import android.content.Intent
 import android.os.Bundle
 import androidx.activity.viewModels
 import androidx.appcompat.widget.SearchView
+import androidx.lifecycle.lifecycleScope
 import com.github.liuyueyi.quick.transfer.ChineseUtils
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
@@ -115,7 +116,7 @@ class SearchContentActivity :
     }
 
     private fun initCacheFileNames(book: Book) {
-        launch(Dispatchers.IO) {
+        lifecycleScope.launch(Dispatchers.IO) {
             adapter.cacheFileNames.addAll(BookHelp.getChapterFiles(book))
             withContext(Dispatchers.Main) {
                 adapter.notifyItemRangeChanged(0, adapter.itemCount, true)
@@ -144,7 +145,7 @@ class SearchContentActivity :
             searchResultCounts = 0
             viewModel.lastQuery = newText
             var searchResults = listOf<SearchResult>()
-            launch(Dispatchers.Main) {
+            lifecycleScope.launch(Dispatchers.Main) {
                 appDb.bookChapterDao.getChapterList(viewModel.bookUrl).map { chapter ->
                     withContext(Dispatchers.IO) {
                         if (isLocalBook

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

@@ -5,6 +5,7 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.activity.viewModels
 import androidx.appcompat.widget.SearchView
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.databinding.ActivitySourceDebugBinding
@@ -36,7 +37,7 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
         initRecyclerView()
         initSearchView()
         viewModel.observe { state, msg ->
-            launch {
+            lifecycleScope.launch {
                 adapter.addItem(msg)
                 if (state == -1 || state == 1000) {
                     binding.rotateLoading.hide()

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

@@ -10,6 +10,7 @@ import androidx.activity.viewModels
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
 import androidx.documentfile.provider.DocumentFile
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import com.google.android.material.snackbar.Snackbar
 import io.legado.app.R
@@ -203,7 +204,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
 
     private fun upBookSource(searchKey: String? = null) {
         sourceFlowJob?.cancel()
-        sourceFlowJob = launch {
+        sourceFlowJob = lifecycleScope.launch {
             when {
                 searchKey.isNullOrEmpty() -> {
                     appDb.bookSourceDao.liveDataAll()
@@ -275,7 +276,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     }
 
     private fun initLiveDataGroup() {
-        launch {
+        lifecycleScope.launch {
             appDb.bookSourceDao.liveGroup()
                 .collect {
                     groups.clear()

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

@@ -9,6 +9,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
@@ -66,7 +67,7 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     }
 
     private fun initData() {
-        launch {
+        lifecycleScope.launch {
             appDb.bookSourceDao.liveGroup().collect {
                 val groups = linkedSetOf<String>()
                 it.map { group ->

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

@@ -5,6 +5,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
@@ -50,7 +51,7 @@ class BookmarkFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_bookmark
     override fun upBookmark(searchKey: String?) {
         val book = viewModel.bookData.value ?: return
         bookmarkFlowJob?.cancel()
-        bookmarkFlowJob = launch {
+        bookmarkFlowJob = lifecycleScope.launch {
             when {
                 searchKey.isNullOrBlank() -> appDb.bookmarkDao.observeByBook(book.name, book.author)
                 else -> appDb.bookmarkDao.liveDataSearch(book.name, book.author, searchKey)

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

@@ -6,6 +6,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
 import io.legado.app.constant.EventBus
@@ -77,7 +78,7 @@ class ChapterListFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_chapt
 
     @SuppressLint("SetTextI18n")
     private fun initBook(book: Book) {
-        launch {
+        lifecycleScope.launch {
             upChapterList(null)
             durChapterIndex = book.durChapterIndex
             binding.tvCurrentChapterInfo.text =
@@ -87,7 +88,7 @@ class ChapterListFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_chapt
     }
 
     private fun initCacheFileNames(book: Book) {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             adapter.cacheFileNames.addAll(BookHelp.getChapterFiles(book))
             withContext(Main) {
                 adapter.notifyItemRangeChanged(0, adapter.itemCount, true)
@@ -108,7 +109,7 @@ class ChapterListFragment : VMBaseFragment<TocViewModel>(R.layout.fragment_chapt
 
     override fun upChapterList(searchKey: String?) {
         tocFlowJob?.cancel()
-        tocFlowJob = launch {
+        tocFlowJob = lifecycleScope.launch {
             when {
                 searchKey.isNullOrBlank() -> appDb.bookChapterDao.observeByBook(viewModel.bookUrl)
                 else -> appDb.bookChapterDao.liveDataSearch(viewModel.bookUrl, searchKey)

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

@@ -10,7 +10,7 @@ import androidx.appcompat.widget.SearchView
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentStatePagerAdapter
-import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import com.google.android.material.tabs.TabLayout
 import io.legado.app.R
 import io.legado.app.constant.AppConst
@@ -28,6 +28,8 @@ import io.legado.app.utils.getPrefInt
 import io.legado.app.utils.putPrefInt
 import io.legado.app.utils.toastOnUi
 import io.legado.app.utils.viewbindingdelegate.viewBinding
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
 
 /**
  * 书架界面
@@ -39,7 +41,6 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf),
     private val binding by viewBinding(FragmentBookshelfBinding::bind)
     private lateinit var adapter: FragmentStatePagerAdapter
     private lateinit var tabLayout: TabLayout
-    private var bookGroupLiveData: LiveData<List<BookGroup>>? = null
     private val bookGroups = mutableListOf<BookGroup>()
     private val fragmentMap = hashMapOf<Long, BooksFragment>()
 
@@ -77,9 +78,8 @@ class BookshelfFragment1 : BaseBookshelfFragment(R.layout.fragment_bookshelf),
     }
 
     private fun initBookGroupData() {
-        bookGroupLiveData?.removeObservers(viewLifecycleOwner)
+        lifecycleScope.launch {
-        bookGroupLiveData = appDb.bookGroupDao.liveDataShow().apply {
+            appDb.bookGroupDao.liveDataShow().collect {
-            observe(viewLifecycleOwner) {
                 viewModel.checkGroup(it)
                 upGroup(it)
             }

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

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.View
 import androidx.core.view.isGone
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -104,7 +105,7 @@ class BooksFragment : BaseFragment(R.layout.fragment_books),
 
     private fun upRecyclerData() {
         booksFlowJob?.cancel()
-        booksFlowJob = launch {
+        booksFlowJob = lifecycleScope.launch {
             when (groupId) {
                 AppConst.bookGroupAllId -> appDb.bookDao.observeAll()
                 AppConst.bookGroupLocalId -> appDb.bookDao.observeLocal()

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

@@ -6,6 +6,7 @@ import android.view.View
 import androidx.appcompat.widget.SearchView
 import androidx.core.view.isGone
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -121,9 +122,8 @@ class BookshelfFragment2 : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
     }
 
     private fun initGroupData() {
-        bookGroupLiveData?.removeObservers(this)
+        lifecycleScope.launch {
-        bookGroupLiveData = appDb.bookGroupDao.liveDataShow().apply {
+            appDb.bookGroupDao.liveDataShow().collect {
-            observe(viewLifecycleOwner) {
                 if (it != bookGroups) {
                     bookGroups = it
                     booksAdapter.notifyDataSetChanged()
@@ -134,7 +134,7 @@ class BookshelfFragment2 : BaseBookshelfFragment(R.layout.fragment_bookshelf1),
 
     private fun initBooksData() {
         booksFlowJob?.cancel()
-        booksFlowJob = launch {
+        booksFlowJob = lifecycleScope.launch {
             when (groupId) {
                 AppConst.bookGroupAllId -> appDb.bookDao.observeAll()
                 AppConst.bookGroupLocalId -> appDb.bookDao.observeLocal()

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

@@ -8,6 +8,7 @@ import android.view.View
 import androidx.appcompat.widget.SearchView
 import androidx.core.view.isGone
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -87,7 +88,7 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
         ATH.applyEdgeEffectColor(binding.rvFind)
         linearLayoutManager = LinearLayoutManager(context)
         binding.rvFind.layoutManager = linearLayoutManager
-        adapter = ExploreAdapter(requireContext(), this, this)
+        adapter = ExploreAdapter(requireContext(), lifecycleScope, this)
         binding.rvFind.adapter = adapter
         adapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
 
@@ -101,7 +102,7 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
     }
 
     private fun initGroupData() {
-        launch {
+        lifecycleScope.launch {
             appDb.bookSourceDao.liveExploreGroup()
                 .collect {
                     groups.clear()
@@ -115,7 +116,7 @@ class ExploreFragment : VMBaseFragment<ExploreViewModel>(R.layout.fragment_explo
 
     private fun upExploreData(searchKey: String? = null) {
         exploreFlowJob?.cancel()
-        exploreFlowJob = launch {
+        exploreFlowJob = lifecycleScope.launch {
             val exploreFlow = when {
                 searchKey.isNullOrBlank() -> {
                     appDb.bookSourceDao.liveExplore()

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

@@ -7,6 +7,7 @@ import android.view.SubMenu
 import android.view.View
 import androidx.appcompat.widget.SearchView
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
 import io.legado.app.constant.AppPattern
@@ -120,7 +121,7 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
     }
 
     private fun initGroupData() {
-        launch {
+        lifecycleScope.launch {
             appDb.rssSourceDao.liveGroup().collect {
                 groups.clear()
                 it.map { group ->
@@ -133,7 +134,7 @@ class RssFragment : VMBaseFragment<RssSourceViewModel>(R.layout.fragment_rss),
 
     private fun upRssFlowJob(searchKey: String? = null) {
         rssFlowJob?.cancel()
-        rssFlowJob = launch {
+        rssFlowJob = lifecycleScope.launch {
             when {
                 searchKey.isNullOrEmpty() -> appDb.rssSourceDao.liveEnabled()
                 searchKey.startsWith("group:") -> {

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

@@ -5,6 +5,7 @@ import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.activityViewModels
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -96,7 +97,7 @@ class RssArticlesFragment : VMBaseFragment<RssArticlesViewModel>(R.layout.fragme
     private fun initData() {
         val rssUrl = activityViewModel.url ?: return
         articlesFlowJob?.cancel()
-        articlesFlowJob = launch {
+        articlesFlowJob = lifecycleScope.launch {
             appDb.rssArticleDao.liveByOriginSort(rssUrl, viewModel.sortName).collect {
                 adapter.setItems(it)
             }

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

@@ -3,6 +3,7 @@ package io.legado.app.ui.rss.article
 import android.app.Application
 import android.os.Bundle
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.RssArticle
@@ -30,7 +31,7 @@ class RssArticlesViewModel(application: Application) : BaseViewModel(application
     fun loadContent(rssSource: RssSource) {
         isLoading = true
         page = 1
-        Rss.getArticles(this, sortName, sortUrl, rssSource, page)
+        Rss.getArticles(viewModelScope, sortName, sortUrl, rssSource, page)
             .onSuccess(Dispatchers.IO) {
                 nextPageUrl = it.nextPageUrl
                 it.articles.let { list ->
@@ -60,7 +61,7 @@ class RssArticlesViewModel(application: Application) : BaseViewModel(application
         page++
         val pageUrl = nextPageUrl
         if (!pageUrl.isNullOrEmpty()) {
-            Rss.getArticles(this, sortName, pageUrl, rssSource, page)
+            Rss.getArticles(viewModelScope, sortName, pageUrl, rssSource, page)
                 .onSuccess(Dispatchers.IO) {
                     nextPageUrl = it.nextPageUrl
                     loadMoreSuccess(it.articles)

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

@@ -1,6 +1,7 @@
 package io.legado.app.ui.rss.favorites
 
 import android.os.Bundle
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.base.BaseActivity
 import io.legado.app.data.appDb
@@ -35,7 +36,7 @@ class RssFavoritesActivity : BaseActivity<ActivityRssFavoritesBinding>(),
     }
 
     private fun initData() {
-        launch {
+        lifecycleScope.launch {
             appDb.rssStarDao.liveAll().collect {
                 adapter.setItems(it)
             }

app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt

@@ -12,6 +12,7 @@ import android.view.*
 import android.webkit.*
 import androidx.activity.viewModels
 import androidx.core.view.size
+import androidx.lifecycle.lifecycleScope
 import androidx.webkit.WebSettingsCompat
 import androidx.webkit.WebViewFeature
 import io.legado.app.R
@@ -231,7 +232,7 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
     }
 
     override fun upTtsMenu(isPlaying: Boolean) {
-        launch {
+        lifecycleScope.launch {
             if (isPlaying) {
                 ttsMenuItem?.setIcon(R.drawable.ic_stop_black_24dp)
                 ttsMenuItem?.setTitle(R.string.aloud_stop)

app/src/main/java/io/legado/app/ui/rss/read/ReadRssViewModel.kt

@@ -9,6 +9,7 @@ import android.util.Base64
 import android.webkit.URLUtil
 import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.viewModelScope
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
 import io.legado.app.constant.AppConst
@@ -25,7 +26,6 @@ import io.legado.app.utils.FileUtils
 import io.legado.app.utils.isContentScheme
 import io.legado.app.utils.writeBytes
 import kotlinx.coroutines.Dispatchers.IO
-import kotlinx.coroutines.launch
 import java.io.File
 import java.util.*
 
@@ -95,7 +95,7 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
 
     private fun loadContent(rssArticle: RssArticle, ruleContent: String) {
         rssSource?.let { source ->
-            Rss.getContent(this, rssArticle, ruleContent, source)
+            Rss.getContent(viewModelScope, rssArticle, ruleContent, source)
                 .onSuccess(IO) { body ->
                     rssArticle.description = body
                     appDb.rssArticleDao.insert(rssArticle)
@@ -189,11 +189,9 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
             ttsInitFinish = true
             play()
         } else {
-            launch {
             toastOnUi(R.string.tts_init_failed)
         }
     }
-    }
 
     @Synchronized
     private fun play() {

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

@@ -5,6 +5,7 @@ import android.view.Menu
 import android.view.MenuItem
 import android.widget.SearchView
 import androidx.activity.viewModels
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.databinding.ActivitySourceDebugBinding
@@ -29,7 +30,7 @@ class RssSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, RssSou
         initRecyclerView()
         initSearchView()
         viewModel.observe { state, msg ->
-            launch {
+            lifecycleScope.launch {
                 adapter.addItem(msg)
                 if (state == -1 || state == 1000) {
                     binding.rotateLoading.hide()

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

@@ -1,6 +1,7 @@
 package io.legado.app.ui.rss.source.debug
 
 import android.app.Application
+import androidx.lifecycle.viewModelScope
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.RssSource
@@ -31,7 +32,7 @@ class RssSourceDebugModel(application: Application) : BaseViewModel(application)
         rssSource?.let {
             start?.invoke()
             Debug.callback = this
-            Debug.startDebug(this, it)
+            Debug.startDebug(viewModelScope, it)
         } ?: error?.invoke()
     }
 

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

@@ -9,6 +9,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
@@ -68,7 +69,7 @@ class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
     }
 
     private fun initData() {
-        launch {
+        lifecycleScope.launch {
             appDb.rssSourceDao.liveGroup().collect {
                 val groups = linkedSetOf<String>()
                 it.map { group ->

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

@@ -10,6 +10,7 @@ import androidx.activity.viewModels
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
 import androidx.documentfile.provider.DocumentFile
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
@@ -178,7 +179,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
     }
 
     private fun initGroupFlow() {
-        launch {
+        lifecycleScope.launch {
             appDb.rssSourceDao.liveGroup().collect {
                 groups.clear()
                 it.map { group ->
@@ -230,7 +231,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
 
     private fun upSourceFlow(searchKey: String? = null) {
         sourceFlowJob?.cancel()
-        sourceFlowJob = launch {
+        sourceFlowJob = lifecycleScope.launch {
             when {
                 searchKey.isNullOrBlank() -> {
                     appDb.rssSourceDao.liveAll()

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

@@ -5,6 +5,7 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.core.view.isGone
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.ItemTouchHelper
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
@@ -100,7 +101,7 @@ class RuleSubActivity : BaseActivity<ActivityRuleSubBinding>(),
             }
             customView { alertBinding.root }
             okButton {
-                launch {
+                lifecycleScope.launch {
                     ruleSub.type = alertBinding.spType.selectedItemPosition
                     ruleSub.name = alertBinding.etName.text?.toString() ?: ""
                     ruleSub.url = alertBinding.etUrl.text?.toString() ?: ""
@@ -121,19 +122,19 @@ class RuleSubActivity : BaseActivity<ActivityRuleSubBinding>(),
     }
 
     override fun delSubscription(ruleSub: RuleSub) {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             appDb.ruleSubDao.delete(ruleSub)
         }
     }
 
     override fun updateSourceSub(vararg ruleSub: RuleSub) {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             appDb.ruleSubDao.update(*ruleSub)
         }
     }
 
     override fun upOrder() {
-        launch(IO) {
+        lifecycleScope.launch(IO) {
             val sourceSubs = appDb.ruleSubDao.all
             for ((index: Int, ruleSub: RuleSub) in sourceSubs.withIndex()) {
                 ruleSub.customOrder = index + 1

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

@@ -5,6 +5,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.FragmentManager
+import androidx.lifecycle.lifecycleScope
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
 import io.legado.app.databinding.DialogTextViewBinding
@@ -79,7 +80,7 @@ class TextDialog : BaseDialogFragment() {
         }
         if (time > 0) {
             binding.badgeView.setBadgeCount((time / 1000).toInt())
-            launch {
+            lifecycleScope.launch {
                 while (time > 0) {
                     delay(1000)
                     time -= 1000

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

@@ -9,6 +9,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.documentfile.provider.DocumentFile
+import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
@@ -126,7 +127,7 @@ class FontSelectDialog : BaseDialogFragment(),
     }
 
     private fun openFolder() {
-        launch(Main) {
+        lifecycleScope.launch(Main) {
             val defaultPath = "SD${File.separator}Fonts"
             selectFontDir.launch(
                 FilePickerParam(