采用Flow

3 years ago · df077da03f
parent a2f2b8289f
commit df077da03f
44 changed files with 168 additions and 172 deletions
--- a/app/src/main/java/io/legado/app/base/BaseActivity.kt
+++ b/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(),
-    CoroutineScope by MainScope() {
+) : AppCompatActivity() {

    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 {
--- a/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
+++ b/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(), CoroutineScope {
-    override val coroutineContext: CoroutineContext
-        get() = job + Dispatchers.Main
-    private lateinit var job: Job
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        job = Job()
-    }
+abstract class BaseDialogFragment : DialogFragment() {

    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() }
--- a/app/src/main/java/io/legado/app/base/BaseFragment.kt
+++ b/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),
-    CoroutineScope {
-    lateinit var job: Job
+abstract class BaseFragment(layoutID: Int) : Fragment(layoutID) {
+
    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 {
--- a/app/src/main/java/io/legado/app/base/BaseViewModel.kt
+++ b/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),
-    CoroutineScope by MainScope() {
+open class BaseViewModel(application: Application) : AndroidViewModel(application) {

    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) {
--- a/app/src/main/java/io/legado/app/data/dao/BookGroupDao.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt
+++ b/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()
                        }
--- a/app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt
+++ b/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)
-        groupLiveData = appDb.bookGroupDao.liveDataAll()
-        groupLiveData?.observe(this, {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataAll().collect {
                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()
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
+++ b/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)
-        groupLiveData = appDb.bookGroupDao.liveDataAll()
-        groupLiveData?.observe(this, {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataAll().collect {
                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)
--- a/app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverViewModel.kt
+++ b/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()) {
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceDialog.kt
+++ b/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 ->
--- a/app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceViewModel.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowViewModel.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt
+++ b/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() {
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
+++ b/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 {
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
+++ b/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)
        }
    }
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
+++ b/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) {
--- a/app/src/main/java/io/legado/app/ui/book/read/config/TocRegexDialog.kt
+++ b/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())
                }
            }
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
+++ b/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() {
--- a/app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/GroupManageDialog.kt
+++ b/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 ->
--- a/app/src/main/java/io/legado/app/ui/book/toc/BookmarkFragment.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/book/toc/ChapterListFragment.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/style1/BookshelfFragment1.kt
+++ b/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)
-        bookGroupLiveData = appDb.bookGroupDao.liveDataShow().apply {
-            observe(viewLifecycleOwner) {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataShow().collect {
                viewModel.checkGroup(it)
                upGroup(it)
            }
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/style1/books/BooksFragment.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/style2/BookshelfFragment2.kt
+++ b/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)
-        bookGroupLiveData = appDb.bookGroupDao.liveDataShow().apply {
-            observe(viewLifecycleOwner) {
+        lifecycleScope.launch {
+            appDb.bookGroupDao.liveDataShow().collect {
                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()
--- a/app/src/main/java/io/legado/app/ui/main/explore/ExploreFragment.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/main/rss/RssFragment.kt
+++ b/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:") -> {
--- a/app/src/main/java/io/legado/app/ui/rss/article/RssArticlesFragment.kt
+++ b/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)
            }
--- a/app/src/main/java/io/legado/app/ui/rss/article/RssArticlesViewModel.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt
+++ b/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)
            }
--- a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
+++ b/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)
--- a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssViewModel.kt
+++ b/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() {
--- a/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugModel.kt
+++ b/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()
    }

--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt
+++ b/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 ->
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
+++ b/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()
--- a/app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/widget/dialog/TextDialog.kt
+++ b/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
--- a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
+++ b/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(