diff --git a/app/src/main/java/io/legado/app/base/BaseViewModel.kt b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
index 44ea2884b..88ddc4b5e 100644
--- a/app/src/main/java/io/legado/app/base/BaseViewModel.kt
+++ b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
@@ -6,7 +6,7 @@ import androidx.annotation.CallSuper
 import androidx.lifecycle.AndroidViewModel
 import io.legado.app.App
 import io.legado.app.help.coroutine.Coroutine
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.*
 import kotlin.coroutines.CoroutineContext
 
@@ -38,12 +38,12 @@ open class BaseViewModel(application: Application) : AndroidViewModel(applicatio
         cancel()
     }
 
-    open fun toastOnUI(message: Int) {
-        context.toastOnUI(message)
+    open fun toastOnUi(message: Int) {
+        context.toastOnUi(message)
     }
 
-    open fun toastOnUI(message: CharSequence?) {
-        context.toastOnUI(message ?: toString())
+    open fun toastOnUi(message: CharSequence?) {
+        context.toastOnUi(message ?: toString())
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/ContentProcessor.kt b/app/src/main/java/io/legado/app/help/ContentProcessor.kt
index b3424ad46..78abc66af 100644
--- a/app/src/main/java/io/legado/app/help/ContentProcessor.kt
+++ b/app/src/main/java/io/legado/app/help/ContentProcessor.kt
@@ -4,7 +4,7 @@ import com.hankcs.hanlp.HanLP
 import io.legado.app.App
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.ReplaceRule
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 
@@ -40,7 +40,7 @@ class ContentProcessor(private val bookName: String, private val bookOrigin: Str
                         }
                     } catch (e: Exception) {
                         withContext(Dispatchers.Main) {
-                            App.INSTANCE.toastOnUI("${item.name}替换出错")
+                            App.INSTANCE.toastOnUi("${item.name}替换出错")
                         }
                     }
                 }
@@ -57,7 +57,7 @@ class ContentProcessor(private val bookName: String, private val bookOrigin: Str
                 }
             } catch (e: Exception) {
                 withContext(Dispatchers.Main) {
-                    App.INSTANCE.toastOnUI("简繁转换出错")
+                    App.INSTANCE.toastOnUi("简繁转换出错")
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/help/IntentHelp.kt b/app/src/main/java/io/legado/app/help/IntentHelp.kt
index ac44e893c..10e1c53ac 100644
--- a/app/src/main/java/io/legado/app/help/IntentHelp.kt
+++ b/app/src/main/java/io/legado/app/help/IntentHelp.kt
@@ -5,7 +5,7 @@ import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import io.legado.app.R
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 @Suppress("unused")
 object IntentHelp {
@@ -19,7 +19,7 @@ object IntentHelp {
             intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
             context.startActivity(intent)
         }.onFailure {
-            context.toastOnUI(R.string.tip_cannot_jump_setting_page)
+            context.toastOnUi(R.string.tip_cannot_jump_setting_page)
         }
     }
 
@@ -30,7 +30,7 @@ object IntentHelp {
             intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
             context.startActivity(intent)
         }.onFailure {
-            context.toastOnUI("无法打开设置")
+            context.toastOnUi("无法打开设置")
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/help/LauncherIconHelp.kt b/app/src/main/java/io/legado/app/help/LauncherIconHelp.kt
index d149f4464..15d19d071 100644
--- a/app/src/main/java/io/legado/app/help/LauncherIconHelp.kt
+++ b/app/src/main/java/io/legado/app/help/LauncherIconHelp.kt
@@ -6,7 +6,7 @@ import android.os.Build
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.ui.welcome.*
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 /**
  * Created by GKF on 2018/2/27.
@@ -26,7 +26,7 @@ object LauncherIconHelp {
     fun changeIcon(icon: String?) {
         if (icon.isNullOrEmpty()) return
         if (Build.VERSION.SDK_INT < 26) {
-            App.INSTANCE.toastOnUI(R.string.change_icon_error)
+            App.INSTANCE.toastOnUi(R.string.change_icon_error)
             return
         }
         var hasEnabled = false
diff --git a/app/src/main/java/io/legado/app/help/SourceHelp.kt b/app/src/main/java/io/legado/app/help/SourceHelp.kt
index 5783b371a..21c1b1b58 100644
--- a/app/src/main/java/io/legado/app/help/SourceHelp.kt
+++ b/app/src/main/java/io/legado/app/help/SourceHelp.kt
@@ -8,7 +8,7 @@ import io.legado.app.data.entities.RssSource
 import io.legado.app.utils.EncoderUtils
 import io.legado.app.utils.NetworkUtils
 import io.legado.app.utils.splitNotBlank
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 object SourceHelp {
 
@@ -26,7 +26,7 @@ object SourceHelp {
         rssSources.forEach { rssSource ->
             if (is18Plus(rssSource.sourceUrl)) {
                 handler.post {
-                    App.INSTANCE.toastOnUI("${rssSource.sourceName}是18+网址,禁止导入.")
+                    App.INSTANCE.toastOnUi("${rssSource.sourceName}是18+网址,禁止导入.")
                 }
             } else {
                 App.db.rssSourceDao.insert(rssSource)
@@ -38,7 +38,7 @@ object SourceHelp {
         bookSources.forEach { bookSource ->
             if (is18Plus(bookSource.bookSourceUrl)) {
                 handler.post {
-                    App.INSTANCE.toastOnUI("${bookSource.bookSourceName}是18+网址,禁止导入.")
+                    App.INSTANCE.toastOnUi("${bookSource.bookSourceName}是18+网址,禁止导入.")
                 }
             } else {
                 App.db.bookSourceDao.insert(bookSource)
diff --git a/app/src/main/java/io/legado/app/help/permission/PermissionActivity.kt b/app/src/main/java/io/legado/app/help/permission/PermissionActivity.kt
index dcee55e64..bd27e56e9 100644
--- a/app/src/main/java/io/legado/app/help/permission/PermissionActivity.kt
+++ b/app/src/main/java/io/legado/app/help/permission/PermissionActivity.kt
@@ -8,7 +8,7 @@ import android.view.KeyEvent
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
 import io.legado.app.R
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 class PermissionActivity : AppCompatActivity() {
 
@@ -32,7 +32,7 @@ class PermissionActivity : AppCompatActivity() {
                 settingIntent.data = Uri.fromParts("package", packageName, null)
                 startActivityForResult(settingIntent, Request.TYPE_REQUEST_SETTING)
             } catch (e: Exception) {
-                toastOnUI(R.string.tip_cannot_jump_setting_page)
+                toastOnUi(R.string.tip_cannot_jump_setting_page)
                 finish()
             }
 
diff --git a/app/src/main/java/io/legado/app/help/storage/BookWebDav.kt b/app/src/main/java/io/legado/app/help/storage/BookWebDav.kt
index 77b5b0fad..3d85424ef 100644
--- a/app/src/main/java/io/legado/app/help/storage/BookWebDav.kt
+++ b/app/src/main/java/io/legado/app/help/storage/BookWebDav.kt
@@ -79,7 +79,7 @@ object BookWebDav {
                         Coroutine.async {
                             restoreWebDav(names[index])
                         }.onError {
-                            App.INSTANCE.toastOnUI("WebDavError:${it.localizedMessage}")
+                            App.INSTANCE.toastOnUi("WebDavError:${it.localizedMessage}")
                         }
                     }
                 }
@@ -117,7 +117,7 @@ object BookWebDav {
             }
         } catch (e: Exception) {
             Handler(Looper.getMainLooper()).post {
-                App.INSTANCE.toastOnUI("WebDav\n${e.localizedMessage}")
+                App.INSTANCE.toastOnUi("WebDav\n${e.localizedMessage}")
             }
         }
     }
@@ -138,7 +138,7 @@ object BookWebDav {
             }
         } catch (e: Exception) {
             Handler(Looper.getMainLooper()).post {
-                App.INSTANCE.toastOnUI("WebDav导出\n${e.localizedMessage}")
+                App.INSTANCE.toastOnUi("WebDav导出\n${e.localizedMessage}")
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
index f6bbcef1e..14428d5c8 100644
--- a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
+++ b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
@@ -8,7 +8,7 @@ import io.legado.app.data.entities.BookSource
 import io.legado.app.utils.DocumentUtils
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.isContentScheme
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import java.io.File
 
 object ImportOldData {
@@ -21,28 +21,28 @@ object ImportOldData {
                         kotlin.runCatching {
                             DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldBookshelf(json)
-                                context.toastOnUI("成功导入书籍${importCount}")
+                                context.toastOnUi("成功导入书籍${importCount}")
                             }
                         }.onFailure {
-                            context.toastOnUI("导入书籍失败\n${it.localizedMessage}")
+                            context.toastOnUi("导入书籍失败\n${it.localizedMessage}")
                         }
                     "myBookSource.json" ->
                         kotlin.runCatching {
                             DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldSource(json)
-                                context.toastOnUI("成功导入书源${importCount}")
+                                context.toastOnUi("成功导入书源${importCount}")
                             }
                         }.onFailure {
-                            context.toastOnUI("导入源失败\n${it.localizedMessage}")
+                            context.toastOnUi("导入源失败\n${it.localizedMessage}")
                         }
                     "myBookReplaceRule.json" ->
                         kotlin.runCatching {
                             DocumentUtils.readText(context, doc.uri)?.let { json ->
                                 val importCount = importOldReplaceRule(json)
-                                context.toastOnUI("成功导入替换规则${importCount}")
+                                context.toastOnUi("成功导入替换规则${importCount}")
                             }
                         }.onFailure {
-                            context.toastOnUI("导入替换规则失败\n${it.localizedMessage}")
+                            context.toastOnUi("导入替换规则失败\n${it.localizedMessage}")
                         }
                 }
             }
@@ -54,9 +54,9 @@ object ImportOldData {
                         FileUtils.createFileIfNotExist(file, "myBookShelf.json")
                     val json = shelfFile.readText()
                     val importCount = importOldBookshelf(json)
-                    context.toastOnUI("成功导入书籍${importCount}")
+                    context.toastOnUi("成功导入书籍${importCount}")
                 }.onFailure {
-                    context.toastOnUI("导入书籍失败\n${it.localizedMessage}")
+                    context.toastOnUi("导入书籍失败\n${it.localizedMessage}")
                 }
 
                 kotlin.runCatching {// Book source
@@ -64,9 +64,9 @@ object ImportOldData {
                         FileUtils.getFile(file, "myBookSource.json")
                     val json = sourceFile.readText()
                     val importCount = importOldSource(json)
-                    context.toastOnUI("成功导入书源${importCount}")
+                    context.toastOnUi("成功导入书源${importCount}")
                 }.onFailure {
-                    context.toastOnUI("导入源失败\n${it.localizedMessage}")
+                    context.toastOnUi("导入源失败\n${it.localizedMessage}")
                 }
 
                 kotlin.runCatching {// Replace rules
@@ -74,12 +74,12 @@ object ImportOldData {
                     if (ruleFile.exists()) {
                         val json = ruleFile.readText()
                         val importCount = importOldReplaceRule(json)
-                        context.toastOnUI("成功导入替换规则${importCount}")
+                        context.toastOnUi("成功导入替换规则${importCount}")
                     } else {
-                        context.toastOnUI("未找到替换规则")
+                        context.toastOnUi("未找到替换规则")
                     }
                 }.onFailure {
-                    context.toastOnUI("导入替换规则失败\n${it.localizedMessage}")
+                    context.toastOnUi("导入替换规则失败\n${it.localizedMessage}")
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/help/storage/Restore.kt b/app/src/main/java/io/legado/app/help/storage/Restore.kt
index ac90d7f91..217c9e143 100644
--- a/app/src/main/java/io/legado/app/help/storage/Restore.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Restore.kt
@@ -223,7 +223,7 @@ object Restore {
             ReadBook.loadContent(resetPageOffset = false)
         }
         withContext(Main) {
-            App.INSTANCE.toastOnUI(R.string.restore_success)
+            App.INSTANCE.toastOnUi(R.string.restore_success)
             if (!BuildConfig.DEBUG) {
                 LauncherIconHelp.changeIcon(App.INSTANCE.getPrefString(PreferKey.launcherIcon))
             }
diff --git a/app/src/main/java/io/legado/app/service/AudioPlayService.kt b/app/src/main/java/io/legado/app/service/AudioPlayService.kt
index d350c4850..7e987abb8 100644
--- a/app/src/main/java/io/legado/app/service/AudioPlayService.kt
+++ b/app/src/main/java/io/legado/app/service/AudioPlayService.kt
@@ -31,7 +31,7 @@ import io.legado.app.receiver.MediaButtonReceiver
 import io.legado.app.service.help.AudioPlay
 import io.legado.app.ui.audio.AudioPlayActivity
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -133,7 +133,7 @@ class AudioPlayService : BaseService(),
             }.onFailure {
                 it.printStackTrace()
                 launch {
-                    toastOnUI("$url ${it.localizedMessage}")
+                    toastOnUi("$url ${it.localizedMessage}")
                     stopSelf()
                 }
             }
@@ -219,7 +219,7 @@ class AudioPlayService : BaseService(),
         if (!mediaPlayer.isPlaying) {
             AudioPlay.status = Status.STOP
             postEvent(EventBus.AUDIO_STATE, Status.STOP)
-            launch { toastOnUI("error: $what $extra $url") }
+            launch { toastOnUi("error: $what $extra $url") }
         }
         return true
     }
@@ -274,7 +274,7 @@ class AudioPlayService : BaseService(),
                         .onSuccess { content ->
                             if (content.isEmpty()) {
                                 withContext(Main) {
-                                    toastOnUI("未获取到资源链接")
+                                    toastOnUi("未获取到资源链接")
                                 }
                             } else {
                                 contentLoadFinish(chapter, content)
@@ -286,7 +286,7 @@ class AudioPlayService : BaseService(),
                         }
                 } else {
                     removeLoading(chapter.index)
-                    toastOnUI("book or source is null")
+                    toastOnUi("book or source is null")
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/service/CacheBookService.kt b/app/src/main/java/io/legado/app/service/CacheBookService.kt
index 2454f6c4e..dbf8db06c 100644
--- a/app/src/main/java/io/legado/app/service/CacheBookService.kt
+++ b/app/src/main/java/io/legado/app/service/CacheBookService.kt
@@ -20,7 +20,7 @@ import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.model.webBook.WebBook
 import io.legado.app.service.help.CacheBook
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.asCoroutineDispatcher
 import kotlinx.coroutines.isActive
 import java.util.concurrent.ConcurrentHashMap
@@ -128,7 +128,7 @@ class CacheBookService : BaseService() {
         if (downloadMap.containsKey(bookUrl)) {
             notificationContent = getString(R.string.already_in_download)
             upNotification()
-            toastOnUI(notificationContent)
+            toastOnUi(notificationContent)
             return
         }
         downloadCount[bookUrl] = DownloadCount()
diff --git a/app/src/main/java/io/legado/app/service/CheckSourceService.kt b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
index 0af7bd698..f38b1c9ce 100644
--- a/app/src/main/java/io/legado/app/service/CheckSourceService.kt
+++ b/app/src/main/java/io/legado/app/service/CheckSourceService.kt
@@ -16,7 +16,7 @@ import io.legado.app.model.webBook.WebBook
 import io.legado.app.service.help.CheckSource
 import io.legado.app.ui.book.source.manage.BookSourceActivity
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.asCoroutineDispatcher
 import java.util.concurrent.Executors
 import kotlin.math.min
@@ -70,7 +70,7 @@ class CheckSourceService : BaseService() {
 
     private fun check(ids: List<String>) {
         if (allIds.isNotEmpty()) {
-            toastOnUI("已有书源在校验,等完成后再试")
+            toastOnUi("已有书源在校验,等完成后再试")
             return
         }
         tasks.clear()
diff --git a/app/src/main/java/io/legado/app/service/DownloadService.kt b/app/src/main/java/io/legado/app/service/DownloadService.kt
index 71b71b3f7..4b3f11b6f 100644
--- a/app/src/main/java/io/legado/app/service/DownloadService.kt
+++ b/app/src/main/java/io/legado/app/service/DownloadService.kt
@@ -21,7 +21,7 @@ import io.legado.app.help.IntentHelp
 import io.legado.app.utils.RealPathUtil
 import io.legado.app.utils.downloadManager
 import io.legado.app.utils.msg
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import java.io.File
 
 
@@ -149,7 +149,7 @@ class DownloadService : BaseService() {
             try {
                 startActivity(intent)
             } catch (e: Exception) {
-                toastOnUI(e.msg)
+                toastOnUi(e.msg)
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/service/HttpReadAloudService.kt b/app/src/main/java/io/legado/app/service/HttpReadAloudService.kt
index 29bb84efb..562e80ce0 100644
--- a/app/src/main/java/io/legado/app/service/HttpReadAloudService.kt
+++ b/app/src/main/java/io/legado/app/service/HttpReadAloudService.kt
@@ -119,17 +119,17 @@ class HttpReadAloudService : BaseReadAloudService(),
                                 }
                             } catch (e: SocketTimeoutException) {
                                 removeSpeakCacheFile(fileName)
-                                runOnUiThread { toastOnUI("tts接口超时，尝试重新获取") }
+                                runOnUiThread { toastOnUi("tts接口超时，尝试重新获取") }
                                 downloadAudio()
                             } catch (e: ConnectException) {
                                 removeSpeakCacheFile(fileName)
-                                runOnUiThread { toastOnUI("网络错误") }
+                                runOnUiThread { toastOnUi("网络错误") }
                             } catch (e: IOException) {
                                 val file = getSpeakFileAsMd5(fileName)
                                 if (file.exists()) {
                                     FileUtils.deleteFile(file.absolutePath)
                                 }
-                                runOnUiThread { toastOnUI("tts文件解析错误") }
+                                runOnUiThread { toastOnUi("tts文件解析错误") }
                             } catch (e: Exception) {
                                 removeSpeakCacheFile(fileName)
                             }
diff --git a/app/src/main/java/io/legado/app/service/TTSReadAloudService.kt b/app/src/main/java/io/legado/app/service/TTSReadAloudService.kt
index 170ea4af7..60cb11bdf 100644
--- a/app/src/main/java/io/legado/app/service/TTSReadAloudService.kt
+++ b/app/src/main/java/io/legado/app/service/TTSReadAloudService.kt
@@ -13,7 +13,7 @@ import io.legado.app.help.MediaHelp
 import io.legado.app.service.help.ReadBook
 import io.legado.app.utils.getPrefBoolean
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.launch
 import java.util.*
 
@@ -64,7 +64,7 @@ class TTSReadAloudService : BaseReadAloudService(), TextToSpeech.OnInitListener
             }
         } else {
             launch {
-                toastOnUI(R.string.tts_init_failed)
+                toastOnUi(R.string.tts_init_failed)
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/service/WebService.kt b/app/src/main/java/io/legado/app/service/WebService.kt
index 23077b707..441a718de 100644
--- a/app/src/main/java/io/legado/app/service/WebService.kt
+++ b/app/src/main/java/io/legado/app/service/WebService.kt
@@ -13,7 +13,7 @@ import io.legado.app.help.IntentHelp
 import io.legado.app.utils.NetworkUtils
 import io.legado.app.utils.getPrefInt
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import io.legado.app.web.HttpServer
 import io.legado.app.web.WebSocketServer
 import org.jetbrains.anko.startService
@@ -91,7 +91,7 @@ class WebService : BaseService() {
                 notificationContent = hostAddress
                 upNotification()
             } catch (e: IOException) {
-                toastOnUI(e.localizedMessage ?: "")
+                toastOnUi(e.localizedMessage ?: "")
                 stopSelf()
             }
         } else {
diff --git a/app/src/main/java/io/legado/app/service/help/CheckSource.kt b/app/src/main/java/io/legado/app/service/help/CheckSource.kt
index 856202fba..725c303e7 100644
--- a/app/src/main/java/io/legado/app/service/help/CheckSource.kt
+++ b/app/src/main/java/io/legado/app/service/help/CheckSource.kt
@@ -6,14 +6,14 @@ import io.legado.app.R
 import io.legado.app.constant.IntentAction
 import io.legado.app.data.entities.BookSource
 import io.legado.app.service.CheckSourceService
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 object CheckSource {
     var keyword = "我的"
 
     fun start(context: Context, sources: List<BookSource>) {
         if (sources.isEmpty()) {
-            context.toastOnUI(R.string.non_select)
+            context.toastOnUi(R.string.non_select)
             return
         }
         val selectedIds: ArrayList<String> = arrayListOf()
diff --git a/app/src/main/java/io/legado/app/service/help/ReadBook.kt b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
index 1ee12fe94..88440d47c 100644
--- a/app/src/main/java/io/legado/app/service/help/ReadBook.kt
+++ b/app/src/main/java/io/legado/app/service/help/ReadBook.kt
@@ -14,7 +14,7 @@ import io.legado.app.ui.book.read.page.entities.TextChapter
 import io.legado.app.ui.book.read.page.entities.TextPage
 import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.ui.book.read.page.provider.ImageProvider
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
@@ -437,7 +437,7 @@ object ReadBook {
             }
         }.onError {
             it.printStackTrace()
-            App.INSTANCE.toastOnUI("ChapterProvider ERROR:\n${it.getStackTraceString()}")
+            App.INSTANCE.toastOnUi("ChapterProvider ERROR:\n${it.getStackTraceString()}")
         }.onSuccess {
             success?.invoke()
         }
diff --git a/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt b/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
index 5f89f34aa..934c7f4d1 100644
--- a/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
@@ -15,7 +15,7 @@ import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.openUrl
 import io.legado.app.utils.sendMail
 import io.legado.app.utils.sendToClip
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 class AboutFragment : PreferenceFragmentCompat() {
 
@@ -105,7 +105,7 @@ class AboutFragment : PreferenceFragmentCompat() {
             startActivity(intent)
             return true
         }.onFailure {
-            toastOnUI("添加失败,请手动添加")
+            toastOnUi("添加失败,请手动添加")
         }
         return false
     }
diff --git a/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt b/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
index 3269b22b1..446d0c042 100644
--- a/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
@@ -7,7 +7,7 @@ import io.legado.app.constant.Theme
 import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.ui.main.MainActivity
 import io.legado.app.utils.getViewModel
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import org.jetbrains.anko.startActivity
 
 
@@ -27,7 +27,7 @@ class FileAssociationActivity :
         binding.rotateLoading.show()
         viewModel.errorLiveData.observe(this, {
             binding.rotateLoading.hide()
-            toastOnUI(it)
+            toastOnUi(it)
             finish()
         })
         viewModel.successLiveData.observe(this, {
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
index 458a98933..e9a638456 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
@@ -8,7 +8,7 @@ import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.utils.getViewModel
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 
 class ImportBookSourceActivity :
@@ -66,7 +66,7 @@ class ImportBookSourceActivity :
                 }
                 else -> {
                     binding.rotateLoading.hide()
-                    toastOnUI(R.string.wrong_format)
+                    toastOnUi(R.string.wrong_format)
                     finish()
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
index f7c9dc783..bff45583b 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
@@ -9,7 +9,7 @@ import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.utils.getViewModel
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 class ImportReplaceRuleActivity :
     VMBaseActivity<ActivityTranslucenceBinding, ImportReplaceRuleViewModel>(
@@ -66,7 +66,7 @@ class ImportReplaceRuleActivity :
                 }
                 else -> {
                     binding.rotateLoading.hide()
-                    toastOnUI("格式不对")
+                    toastOnUi("格式不对")
                     finish()
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
index 928279d63..69105cfba 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
@@ -8,7 +8,7 @@ import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.utils.getViewModel
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 class ImportRssSourceActivity :
     VMBaseActivity<ActivityTranslucenceBinding, ImportRssSourceViewModel>(
@@ -65,7 +65,7 @@ class ImportRssSourceActivity :
                 }
                 else -> {
                     binding.rotateLoading.hide()
-                    toastOnUI(R.string.wrong_format)
+                    toastOnUi(R.string.wrong_format)
                     finish()
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/audio/AudioPlayViewModel.kt b/app/src/main/java/io/legado/app/ui/audio/AudioPlayViewModel.kt
index 80680f82d..1ccb7757f 100644
--- a/app/src/main/java/io/legado/app/ui/audio/AudioPlayViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/audio/AudioPlayViewModel.kt
@@ -75,10 +75,10 @@ class AudioPlayViewModel(application: Application) : BaseViewModel(application)
                         }
                         AudioPlay.upDurChapter(book)
                     } else {
-                        toastOnUI(R.string.error_load_toc)
+                        toastOnUi(R.string.error_load_toc)
                     }
                 }?.onError {
-                    toastOnUI(R.string.error_load_toc)
+                    toastOnUi(R.string.error_load_toc)
                 }
         }
     }
diff --git 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
index 7e54a5111..13c2c8dd1 100644
--- 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
@@ -90,7 +90,7 @@ class BookInfoActivity :
                         )
                     }
                 } else {
-                    toastOnUI(R.string.after_add_bookshelf)
+                    toastOnUi(R.string.after_add_bookshelf)
                 }
             }
             R.id.menu_share_it -> {
@@ -111,7 +111,7 @@ class BookInfoActivity :
             }
             R.id.menu_copy_url -> viewModel.bookData.value?.bookUrl?.let {
                 sendToClip(it)
-            } ?: toastOnUI(R.string.no_book)
+            } ?: toastOnUi(R.string.no_book)
             R.id.menu_can_update -> {
                 if (viewModel.inBookshelf) {
                     viewModel.bookData.value?.let {
@@ -119,7 +119,7 @@ class BookInfoActivity :
                         viewModel.saveBook()
                     }
                 } else {
-                    toastOnUI(R.string.after_add_bookshelf)
+                    toastOnUi(R.string.after_add_bookshelf)
                 }
             }
             R.id.menu_clear_cache -> viewModel.clearCache()
@@ -291,7 +291,7 @@ class BookInfoActivity :
 
     private fun openChapterList() {
         if (viewModel.chapterListData.value.isNullOrEmpty()) {
-            toastOnUI(R.string.chapter_list_empty)
+            toastOnUi(R.string.chapter_list_empty)
             return
         }
         viewModel.bookData.value?.let {
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
index cb768d081..3e315b941 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt
@@ -65,11 +65,11 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                             }
                             loadChapter(it, changeDruChapterIndex)
                         }.onError {
-                            toastOnUI(R.string.error_get_book_info)
+                            toastOnUi(R.string.error_get_book_info)
                         }
                 } ?: let {
                     chapterListData.postValue(null)
-                    toastOnUI(R.string.error_no_source)
+                    toastOnUi(R.string.error_no_source)
                 }
             }
         }
@@ -101,19 +101,19 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                                     changeDruChapterIndex(it)
                                 }
                             } else {
-                                toastOnUI(R.string.chapter_list_empty)
+                                toastOnUi(R.string.chapter_list_empty)
                             }
                         }.onError {
                             chapterListData.postValue(null)
-                            toastOnUI(R.string.error_get_chapter_list)
+                            toastOnUi(R.string.error_get_chapter_list)
                         }
                 } ?: let {
                     chapterListData.postValue(null)
-                    toastOnUI(R.string.error_no_source)
+                    toastOnUi(R.string.error_no_source)
                 }
             }
         }.onError {
-            toastOnUI("LoadTocError:${it.localizedMessage}")
+            toastOnUi("LoadTocError:${it.localizedMessage}")
         }
     }
 
@@ -238,9 +238,9 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
         execute {
             BookHelp.clearCache(bookData.value!!)
         }.onSuccess {
-            toastOnUI(R.string.clear_cache_success)
+            toastOnUi(R.string.clear_cache_success)
         }.onError {
-            toastOnUI(it.stackTraceToString())
+            toastOnUi(it.stackTraceToString())
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
index bd40994aa..02dc70c1e 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
@@ -119,7 +119,7 @@ class BookInfoEditActivity :
                 }.getOrNull()?.let { byteArray ->
                     file.writeBytes(byteArray)
                     coverChangeTo(file.absolutePath)
-                } ?: toastOnUI("获取文件出错")
+                } ?: toastOnUi("获取文件出错")
             }
         } else {
             PermissionsCompat.Builder(this)
diff --git 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
index ce921cebe..fcd9b0699 100644
--- 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
@@ -251,7 +251,7 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
         } ?: let {
             val lastPath = AppConfig.importBookPath
             if (lastPath.isNullOrEmpty()) {
-                toastOnUI(R.string.empty_msg_import_book)
+                toastOnUi(R.string.empty_msg_import_book)
             } else {
                 adapter.clearItems()
                 val file = File(path)
diff --git 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
index ab738e2dc..c514bdd14 100644
--- 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
@@ -346,7 +346,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
                     ) {
                         if (BaseReadAloudService.isPlay()) {
                             ReadAloud.pause(this)
-                            toastOnUI(R.string.read_aloud_pause)
+                            toastOnUi(R.string.read_aloud_pause)
                             return true
                         }
                         if (isAutoPage) {
@@ -452,7 +452,7 @@ class ReadBookActivity : ReadBookBaseActivity(),
             R.id.menu_bookmark -> binding.readView.curPage.let {
                 val bookmark = it.createBookmark()
                 if (bookmark == null) {
-                    toastOnUI(R.string.create_bookmark_error)
+                    toastOnUi(R.string.create_bookmark_error)
                 } else {
                     showBookMark(bookmark)
                 }
diff --git 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
index 9174aa62d..c5222dfb8 100644
--- 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
@@ -226,7 +226,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
         }.onStart {
             ReadBook.upMsg(context.getString(R.string.source_auto_changing))
         }.onError {
-            toastOnUI(it.msg)
+            toastOnUi(it.msg)
         }.onFinally {
             ReadBook.upMsg(null)
         }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
index 2ebc2ea02..416b69132 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
@@ -119,7 +119,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
             R.id.menu_share_str -> context.share(callBack.selectedText)
             R.id.menu_aloud -> {
                 if (BaseReadAloudService.isRun) {
-                    context.toastOnUI(R.string.alouding_disable)
+                    context.toastOnUi(R.string.alouding_disable)
                     return
                 }
                 readAloud(callBack.selectedText)
@@ -138,7 +138,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                     context.startActivity(intent)
                 }.onFailure {
                     it.printStackTrace()
-                    context.toastOnUI(it.localizedMessage ?: "ERROR")
+                    context.toastOnUi(it.localizedMessage ?: "ERROR")
                 }
             }
             else -> item.intent?.let {
@@ -214,7 +214,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                 ).intent = createProcessTextIntentForResolveInfo(resolveInfo)
             }
         }.onFailure {
-            context.toastOnUI("获取文字操作菜单出错:${it.localizedMessage}")
+            context.toastOnUi("获取文字操作菜单出错:${it.localizedMessage}")
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
index 57fd4c59a..ca489c093 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
@@ -185,7 +185,7 @@ class BgTextConfigDialog : BaseDialogFragment(), FilePickerDialog.CallBack {
                 postEvent(EventBus.UP_CONFIG, true)
                 dismiss()
             } else {
-                toastOnUI("数量已是最少,不能删除.")
+                toastOnUi("数量已是最少,不能删除.")
             }
         }
     }
@@ -267,7 +267,7 @@ class BgTextConfigDialog : BaseDialogFragment(), FilePickerDialog.CallBack {
                 }
             }
         }.onSuccess {
-            toastOnUI("导出成功, 文件名为 $exportFileName")
+            toastOnUi("导出成功, 文件名为 $exportFileName")
         }.onError {
             it.printStackTrace()
             longToast("导出失败:${it.localizedMessage}")
@@ -363,7 +363,7 @@ class BgTextConfigDialog : BaseDialogFragment(), FilePickerDialog.CallBack {
             ReadBookConfig.durConfig = config
             postEvent(EventBus.UP_CONFIG, true)
         }.onSuccess {
-            toastOnUI("导入成功")
+            toastOnUi("导入成功")
         }.onError {
             it.printStackTrace()
             longToast("导入失败:${it.localizedMessage}")
@@ -404,7 +404,7 @@ class BgTextConfigDialog : BaseDialogFragment(), FilePickerDialog.CallBack {
                     ReadBookConfig.durConfig.setCurBg(2, file.absolutePath)
                     ReadBookConfig.upBg()
                     postEvent(EventBus.UP_CONFIG, false)
-                } ?: toastOnUI("获取文件出错")
+                } ?: toastOnUi("获取文件出错")
             }
         } else {
             PermissionsCompat.Builder(this)
diff --git 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
index 9ff85ebc0..515ebabca 100644
--- 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
@@ -14,7 +14,7 @@ import io.legado.app.lib.theme.accentColor
 import io.legado.app.ui.qrcode.QrCodeActivity
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.getViewModel
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.launch
 import org.jetbrains.anko.startActivityForResult
 
@@ -83,7 +83,7 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
         viewModel.startDebug(key, {
             binding.rotateLoading.show()
         }, {
-            toastOnUI("未获取到书源")
+            toastOnUi("未获取到书源")
         })
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
index 8f84e93ea..ed090bbdd 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
@@ -105,7 +105,7 @@ class BookSourceEditActivity :
             R.id.menu_login -> getSource().let {
                 if (checkSource(it)) {
                     if (it.loginUrl.isNullOrEmpty()) {
-                        toastOnUI(R.string.source_no_login)
+                        toastOnUi(R.string.source_no_login)
                     } else {
                         startActivity<SourceLogin>(
                             Pair("sourceUrl", it.bookSourceUrl),
@@ -357,7 +357,7 @@ class BookSourceEditActivity :
 
     private fun checkSource(source: BookSource): Boolean {
         if (source.bookSourceUrl.isBlank() || source.bookSourceName.isBlank()) {
-            toastOnUI(R.string.non_null_name_url)
+            toastOnUi(R.string.non_null_name_url)
             return false
         }
         return true
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
index aba8afa5e..2705dc6fa 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditViewModel.kt
@@ -45,7 +45,7 @@ class BookSourceEditViewModel(application: Application) : BaseViewModel(applicat
         }.onSuccess {
             success?.invoke()
         }.onError {
-            toastOnUI(it.localizedMessage)
+            toastOnUi(it.localizedMessage)
             it.printStackTrace()
         }
     }
@@ -58,13 +58,13 @@ class BookSourceEditViewModel(application: Application) : BaseViewModel(applicat
             }
             source
         }.onError {
-            toastOnUI(it.localizedMessage)
+            toastOnUi(it.localizedMessage)
             it.printStackTrace()
         }.onSuccess {
             if (it != null) {
                 onSuccess(it)
             } else {
-                toastOnUI("格式不对")
+                toastOnUi("格式不对")
             }
         }
     }
@@ -76,7 +76,7 @@ class BookSourceEditViewModel(application: Application) : BaseViewModel(applicat
                 finally.invoke(it)
             }
         }.onError {
-            toastOnUI(it.localizedMessage ?: "Error")
+            toastOnUi(it.localizedMessage ?: "Error")
         }
     }
 }
\ No newline at end of file
diff --git 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
index 2ae2773c8..c2b739cd2 100644
--- 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
@@ -411,7 +411,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
             groups.map { group ->
                 if (group.contains("失效")) {
                     searchView.setQuery("失效", true)
-                    toastOnUI("发现有失效书源，已为您自动筛选！")
+                    toastOnUi("发现有失效书源，已为您自动筛选！")
                 }
             }
         }
@@ -473,7 +473,7 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
                             startActivity<ImportBookSourceActivity>("dataKey" to dataKey)
                         }
                     } catch (e: Exception) {
-                        toastOnUI("readTextError:${e.localizedMessage}")
+                        toastOnUi("readTextError:${e.localizedMessage}")
                     }
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
index 8ef8cc50f..e8bf52ec8 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
@@ -181,7 +181,7 @@ class BookSourceViewModel(application: Application) : BaseViewModel(application)
         }.onSuccess {
             success.invoke(it)
         }.onError {
-            toastOnUI(it.msg)
+            toastOnUi(it.msg)
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt b/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
index 970267735..b880a25be 100644
--- a/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
+++ b/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
@@ -20,7 +20,7 @@ import io.legado.app.ui.filepicker.FilePicker
 import io.legado.app.utils.getPrefString
 import io.legado.app.utils.isContentScheme
 import io.legado.app.utils.longToast
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers.Main
 
 object BackupRestoreUi {
@@ -41,7 +41,7 @@ object BackupRestoreUi {
                     Coroutine.async {
                         Backup.backup(fragment.requireContext(), backupPath)
                     }.onSuccess {
-                        fragment.toastOnUI(R.string.backup_success)
+                        fragment.toastOnUi(R.string.backup_success)
                     }
                 } else {
                     selectBackupFolder(fragment, backupSelectRequestCode)
@@ -64,7 +64,7 @@ object BackupRestoreUi {
                     AppConfig.backupPath = path
                     Backup.backup(fragment.requireContext(), path)
                 }.onSuccess {
-                    fragment.toastOnUI(R.string.backup_success)
+                    fragment.toastOnUi(R.string.backup_success)
                 }
             }
             .request()
@@ -134,7 +134,7 @@ object BackupRestoreUi {
                         Coroutine.async {
                             Backup.backup(App.INSTANCE, uri.toString())
                         }.onSuccess {
-                            App.INSTANCE.toastOnUI(R.string.backup_success)
+                            App.INSTANCE.toastOnUi(R.string.backup_success)
                         }
                     } else {
                         uri.path?.let { path ->
@@ -142,7 +142,7 @@ object BackupRestoreUi {
                             Coroutine.async {
                                 Backup.backup(App.INSTANCE, path)
                             }.onSuccess {
-                                App.INSTANCE.toastOnUI(R.string.backup_success)
+                                App.INSTANCE.toastOnUi(R.string.backup_success)
                             }
                         }
                     }
diff --git a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
index 06eadc149..3c226c8c6 100644
--- a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
@@ -177,7 +177,7 @@ class OtherConfigFragment : BasePreferenceFragment(),
             okButton {
                 BookHelp.clearCache()
                 FileUtils.deleteFile(requireActivity().cacheDir.absolutePath)
-                toastOnUI(R.string.clear_cache_success)
+                toastOnUi(R.string.clear_cache_success)
             }
             noButton()
         }.show()
@@ -221,7 +221,7 @@ class OtherConfigFragment : BasePreferenceFragment(),
                     file.writeBytes(byteArray)
                     putPrefString(PreferKey.defaultCover, file.absolutePath)
                     CoverImageView.upDefaultCover()
-                } ?: toastOnUI("获取文件出错")
+                } ?: toastOnUi("获取文件出错")
             }
         } else {
             PermissionsCompat.Builder(this)
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
index d4b88d855..4450905e5 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
@@ -60,7 +60,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
         findPreference<ColorPreference>(PreferKey.cBackground)?.let {
             it.onSaveColor = { color ->
                 if (!ColorUtils.isColorLight(color)) {
-                    toastOnUI(R.string.day_background_too_dark)
+                    toastOnUi(R.string.day_background_too_dark)
                     true
                 } else {
                     false
@@ -70,7 +70,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
         findPreference<ColorPreference>(PreferKey.cNBackground)?.let {
             it.onSaveColor = { color ->
                 if (ColorUtils.isColorLight(color)) {
-                    toastOnUI(R.string.night_background_too_light)
+                    toastOnUi(R.string.night_background_too_light)
                     true
                 } else {
                     false
@@ -84,11 +84,11 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 val textColor = getCompatColor(R.color.primaryText)
                 when {
                     ColorUtils.getColorDifference(color, background) <= 60 -> {
-                        toastOnUI(R.string.accent_background_diff)
+                        toastOnUi(R.string.accent_background_diff)
                         true
                     }
                     ColorUtils.getColorDifference(color, textColor) <= 60 -> {
-                        toastOnUI(R.string.accent_text_diff)
+                        toastOnUi(R.string.accent_text_diff)
                         true
                     }
                     else -> false
@@ -102,11 +102,11 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 val textColor = getCompatColor(R.color.primaryText)
                 when {
                     ColorUtils.getColorDifference(color, background) <= 60 -> {
-                        toastOnUI(R.string.accent_background_diff)
+                        toastOnUi(R.string.accent_background_diff)
                         true
                     }
                     ColorUtils.getColorDifference(color, textColor) <= 60 -> {
-                        toastOnUI(R.string.accent_text_diff)
+                        toastOnUi(R.string.accent_text_diff)
                         true
                     }
                     else -> false
@@ -277,7 +277,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                     putPrefString(preferenceKey, file.absolutePath)
                     upPreferenceSummary(preferenceKey, file.absolutePath)
                     success()
-                } ?: toastOnUI("获取文件出错")
+                } ?: toastOnUi("获取文件出错")
             }
         } else {
             PermissionsCompat.Builder(this)
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeListDialog.kt b/app/src/main/java/io/legado/app/ui/config/ThemeListDialog.kt
index f6b722c1a..3aadc8b25 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeListDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeListDialog.kt
@@ -72,7 +72,7 @@ class ThemeListDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
                     if (ThemeConfig.addConfig(it)) {
                         initData()
                     } else {
-                        toastOnUI("格式不对,添加失败")
+                        toastOnUi("格式不对,添加失败")
                     }
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/filepicker/FilePickerDialog.kt b/app/src/main/java/io/legado/app/ui/filepicker/FilePickerDialog.kt
index 00e9a7f31..2f574f2cd 100644
--- a/app/src/main/java/io/legado/app/ui/filepicker/FilePickerDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/filepicker/FilePickerDialog.kt
@@ -170,14 +170,14 @@ class FilePickerDialog : DialogFragment(),
         } else {
             fileItem?.path?.let { path ->
                 if (mode == DIRECTORY) {
-                    toastOnUI("这是文件夹选择,不能选择文件,点击右上角的确定选择文件夹")
+                    toastOnUi("这是文件夹选择,不能选择文件,点击右上角的确定选择文件夹")
                 } else if (allowExtensions.isNullOrEmpty() ||
                     allowExtensions?.contains(FileUtils.getExtension(path)) == true
                 ) {
                     setData(path)
                     dismiss()
                 } else {
-                    toastOnUI("不能打开此文件")
+                    toastOnUi("不能打开此文件")
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
index 964164b98..17005f2cc 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
@@ -32,7 +32,7 @@ import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.getViewModel
 import io.legado.app.utils.hideSoftInput
 import io.legado.app.utils.observeEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 
 
 class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
@@ -144,7 +144,7 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
                         return true
                     }
                     if (System.currentTimeMillis() - exitTime > 2000) {
-                        toastOnUI(R.string.double_click_exit)
+                        toastOnUi(R.string.double_click_exit)
                         exitTime = System.currentTimeMillis()
                     } else {
                         if (BaseReadAloudService.pause) {
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfFragment.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfFragment.kt
index 83e23e3e8..6cbf4a678 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfFragment.kt
@@ -205,7 +205,7 @@ class BookshelfFragment : VMBaseFragment<BookshelfViewModel>(R.layout.fragment_b
 
     override fun onTabReselected(tab: TabLayout.Tab) {
         fragmentMap[selectedGroup.groupId]?.let {
-            toastOnUI("${selectedGroup.groupName}(${it.getBooksCount()})")
+            toastOnUi("${selectedGroup.groupName}(${it.getBooksCount()})")
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt
index 5f464c8ac..2cfcb2b2e 100644
--- a/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt
@@ -57,12 +57,12 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
             }
         }.onSuccess {
             if (successCount > 0) {
-                toastOnUI(R.string.success)
+                toastOnUi(R.string.success)
             } else {
-                toastOnUI("ERROR")
+                toastOnUi("ERROR")
             }
         }.onError {
-            toastOnUI(it.localizedMessage ?: "ERROR")
+            toastOnUi(it.localizedMessage ?: "ERROR")
         }
     }
 
@@ -98,7 +98,7 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                 }
             }
         }.onError {
-            toastOnUI(it.localizedMessage ?: "ERROR")
+            toastOnUi(it.localizedMessage ?: "ERROR")
         }
     }
 
@@ -121,7 +121,7 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                 }
             }
         }.onFinally {
-            toastOnUI(R.string.success)
+            toastOnUi(R.string.success)
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
index 8d1cb0889..edeafbe3a 100644
--- a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
@@ -269,7 +269,7 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
                             startActivity<ImportReplaceRuleActivity>("dataKey" to dataKey)
                         }
                     }.onFailure {
-                        toastOnUI("readTextError:${it.localizedMessage}")
+                        toastOnUi("readTextError:${it.localizedMessage}")
                     }
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleViewModel.kt b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleViewModel.kt
index e93debb74..0e678c9b4 100644
--- a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleViewModel.kt
@@ -79,9 +79,9 @@ class ReplaceRuleViewModel(application: Application) : BaseViewModel(application
             FileUtils.createFileIfNotExist(file, "exportReplaceRule.json")
                 .writeText(json)
         }.onSuccess {
-            context.toastOnUI("成功导出至\n${file.absolutePath}")
+            context.toastOnUi("成功导出至\n${file.absolutePath}")
         }.onError {
-            context.toastOnUI("导出失败\n${it.localizedMessage}")
+            context.toastOnUi("导出失败\n${it.localizedMessage}")
         }
     }
 
@@ -92,9 +92,9 @@ class ReplaceRuleViewModel(application: Application) : BaseViewModel(application
             doc.createFile("", "exportReplaceRule.json")
                 ?.writeText(context, json)
         }.onSuccess {
-            context.toastOnUI("成功导出至\n${doc.uri.path}")
+            context.toastOnUi("成功导出至\n${doc.uri.path}")
         }.onError {
-            context.toastOnUI("导出失败\n${it.localizedMessage}")
+            context.toastOnUi("导出失败\n${it.localizedMessage}")
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
index c9fe46b03..caba20753 100644
--- a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
@@ -20,7 +20,7 @@ import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.getViewModel
 import io.legado.app.utils.postEvent
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import org.jetbrains.anko.displayMetrics
 import org.jetbrains.anko.selector
 import kotlin.math.abs
@@ -82,7 +82,7 @@ class ReplaceEditActivity :
             R.id.menu_save -> {
                 val rule = getReplaceRule()
                 if (!rule.isValid()) {
-                    toastOnUI(R.string.replace_rule_invalid)
+                    toastOnUi(R.string.replace_rule_invalid)
                 } else {
                     viewModel.save(rule) {
                         postEvent(EventBus.REPLACE_RULE_SAVE, "")
diff --git 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
index 0f45b14b6..af3577f3d 100644
--- 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
@@ -51,7 +51,7 @@ class RssArticlesViewModel(application: Application) : BaseViewModel(application
             }.onError {
                 loadFinally.postValue(false)
                 it.printStackTrace()
-                toastOnUI(it.localizedMessage)
+                toastOnUi(it.localizedMessage)
             }
     }
 
diff --git 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
index 24aafe19d..114efd950 100644
--- 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
@@ -137,9 +137,9 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
                 }
             } ?: throw Throwable("NULL")
         }.onError {
-            toastOnUI("保存图片失败:${it.localizedMessage}")
+            toastOnUi("保存图片失败:${it.localizedMessage}")
         }.onSuccess {
-            toastOnUI("保存成功")
+            toastOnUi("保存成功")
         }
     }
 
@@ -186,7 +186,7 @@ class ReadRssViewModel(application: Application) : BaseViewModel(application),
             play()
         } else {
             launch {
-                toastOnUI(R.string.tts_init_failed)
+                toastOnUi(R.string.tts_init_failed)
             }
         }
     }
diff --git 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
index 5b9560a39..2a54205cc 100644
--- 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
@@ -9,7 +9,7 @@ import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.utils.getViewModel
 import io.legado.app.utils.gone
-import io.legado.app.utils.toastOnUI
+import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.launch
 
 
@@ -56,7 +56,7 @@ class RssSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, RssSou
         viewModel.startDebug({
             binding.rotateLoading.show()
         }, {
-            toastOnUI("未获取到源")
+            toastOnUi("未获取到源")
         })
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
index c7d2a5a0a..faf737a90 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
@@ -181,7 +181,7 @@ class RssSourceEditActivity :
 
     private fun checkSource(source: RssSource): Boolean {
         if (source.sourceName.isBlank() || source.sourceName.isBlank()) {
-            toastOnUI("名称或url不能为空")
+            toastOnUi("名称或url不能为空")
             return false
         }
         return true
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditViewModel.kt b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditViewModel.kt
index a13b7130f..910cf6dda 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditViewModel.kt
@@ -40,7 +40,7 @@ class RssSourceEditViewModel(application: Application) : BaseViewModel(applicati
         }.onSuccess {
             success()
         }.onError {
-            toastOnUI(it.localizedMessage)
+            toastOnUi(it.localizedMessage)
             it.printStackTrace()
         }
     }
@@ -53,12 +53,12 @@ class RssSourceEditViewModel(application: Application) : BaseViewModel(applicati
             }
             source
         }.onError {
-            toastOnUI(it.localizedMessage)
+            toastOnUi(it.localizedMessage)
         }.onSuccess {
             if (it != null) {
                 onSuccess(it)
             } else {
-                toastOnUI("格式不对")
+                toastOnUi("格式不对")
             }
         }
     }
@@ -70,7 +70,7 @@ class RssSourceEditViewModel(application: Application) : BaseViewModel(applicati
                 finally.invoke(it)
             }
         }.onError {
-            toastOnUI(it.msg)
+            toastOnUi(it.msg)
         }
     }
 
diff --git 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
index c8d1b608b..013ae9fd1 100644
--- 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
@@ -270,7 +270,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
                             startActivity<ImportRssSourceActivity>("dataKey" to dataKey)
                         }
                     }.onFailure {
-                        toastOnUI("readTextError:${it.localizedMessage}")
+                        toastOnUi("readTextError:${it.localizedMessage}")
                     }
                 }
             }
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
index 5a4ea13c3..03793a4f9 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
@@ -85,9 +85,9 @@ class RssSourceViewModel(application: Application) : BaseViewModel(application)
             FileUtils.createFileIfNotExist(file, "exportRssSource.json")
                 .writeText(json)
         }.onSuccess {
-            context.toastOnUI("成功导出至\n${file.absolutePath}")
+            context.toastOnUi("成功导出至\n${file.absolutePath}")
         }.onError {
-            context.toastOnUI("导出失败\n${it.localizedMessage}")
+            context.toastOnUi("导出失败\n${it.localizedMessage}")
         }
     }
 
@@ -98,9 +98,9 @@ class RssSourceViewModel(application: Application) : BaseViewModel(application)
             doc.createFile("", "exportRssSource.json")
                 ?.writeText(context, json)
         }.onSuccess {
-            context.toastOnUI("成功导出至\n${doc.uri.path}")
+            context.toastOnUi("成功导出至\n${doc.uri.path}")
         }.onError {
-            context.toastOnUI("导出失败\n${it.localizedMessage}")
+            context.toastOnUi("导出失败\n${it.localizedMessage}")
         }
     }
 
@@ -122,7 +122,7 @@ class RssSourceViewModel(application: Application) : BaseViewModel(application)
         }.onSuccess {
             success.invoke(it)
         }.onError {
-            toastOnUI(it.msg)
+            toastOnUi(it.msg)
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/font/FontAdapter.kt b/app/src/main/java/io/legado/app/ui/widget/font/FontAdapter.kt
index 088401abb..5e9e5b4a9 100644
--- a/app/src/main/java/io/legado/app/ui/widget/font/FontAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/font/FontAdapter.kt
@@ -42,7 +42,7 @@ class FontAdapter(context: Context, val callBack: CallBack) :
                 tvFont.typeface = typeface
             }.onFailure {
                 it.printStackTrace()
-                context.toastOnUI("Read ${item.name} Error: ${it.localizedMessage}")
+                context.toastOnUi("Read ${item.name} Error: ${it.localizedMessage}")
             }
             tvFont.text = item.name
             root.setOnClickListener { callBack.onClick(item) }
diff --git a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
index 1eeda60a6..dd406024e 100644
--- a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
@@ -157,7 +157,7 @@ class FontSelectDialog : BaseDialogFragment(),
         }.onSuccess {
             adapter?.setItems(it)
         }.onError {
-            toastOnUI("getFontFiles:${it.localizedMessage}")
+            toastOnUi("getFontFiles:${it.localizedMessage}")
         }
     }
 
@@ -192,7 +192,7 @@ class FontSelectDialog : BaseDialogFragment(),
         }.onSuccess {
             adapter?.setItems(it)
         }.onError {
-            toastOnUI("getFontFiles:${it.localizedMessage}")
+            toastOnUi("getFontFiles:${it.localizedMessage}")
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
index 49e57cd84..6b31409ac 100644
--- a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
@@ -35,25 +35,25 @@ val Context.downloadManager
 val Context.connectivityManager
     get() = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
 
-fun Context.toastOnUI(message: Int) {
+fun Context.toastOnUi(message: Int) {
     runOnUiThread {
         Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
     }
 }
 
-fun Context.toastOnUI(message: CharSequence?) {
+fun Context.toastOnUi(message: CharSequence?) {
     runOnUiThread {
         Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
     }
 }
 
-fun Context.longToastOnUI(message: Int) {
+fun Context.longToastOnUi(message: Int) {
     runOnUiThread {
         Toast.makeText(this, message, Toast.LENGTH_LONG).show()
     }
 }
 
-fun Context.longToastOnUI(message: CharSequence?) {
+fun Context.longToastOnUi(message: CharSequence?) {
     runOnUiThread {
         Toast.makeText(this, message, Toast.LENGTH_LONG).show()
     }
@@ -139,7 +139,7 @@ val Context.navigationBarHeight: Int
 fun Context.shareWithQr(title: String, text: String) {
     val bitmap = QRCodeUtils.createQRCode(text)
     if (bitmap == null) {
-        toastOnUI(R.string.text_too_long_qr_error)
+        toastOnUi(R.string.text_too_long_qr_error)
     } else {
         try {
             val file = File(externalCacheDir, "qr.png")
@@ -159,7 +159,7 @@ fun Context.shareWithQr(title: String, text: String) {
             intent.type = "image/png"
             startActivity(Intent.createChooser(intent, title))
         } catch (e: Exception) {
-            toastOnUI(e.localizedMessage ?: "ERROR")
+            toastOnUi(e.localizedMessage ?: "ERROR")
         }
     }
 }
@@ -191,7 +191,7 @@ fun Context.sendMail(mail: String) {
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
         startActivity(intent)
     } catch (e: Exception) {
-        toastOnUI(e.localizedMessage ?: "Error")
+        toastOnUi(e.localizedMessage ?: "Error")
     }
 }
 
@@ -231,13 +231,13 @@ fun Context.openUrl(uri: Uri) {
         try {
             startActivity(intent)
         } catch (e: Exception) {
-            toastOnUI(e.localizedMessage ?: "open url error")
+            toastOnUi(e.localizedMessage ?: "open url error")
         }
     } else {
         try {
             startActivity(Intent.createChooser(intent, "请选择浏览器"))
         } catch (e: Exception) {
-            toastOnUI(e.localizedMessage ?: "open url error")
+            toastOnUi(e.localizedMessage ?: "open url error")
         }
     }
 }
diff --git a/app/src/main/java/io/legado/app/utils/Toasts.kt b/app/src/main/java/io/legado/app/utils/Toasts.kt
index 5516fa3a2..b0fea3e38 100644
--- a/app/src/main/java/io/legado/app/utils/Toasts.kt
+++ b/app/src/main/java/io/legado/app/utils/Toasts.kt
@@ -12,14 +12,14 @@ import org.jetbrains.anko.longToast
  *
  * @param message the message text resource.
  */
-fun Fragment.toastOnUI(message: Int) = requireActivity().toastOnUI(message)
+fun Fragment.toastOnUi(message: Int) = requireActivity().toastOnUi(message)
 
 /**
  * Display the simple Toast message with the [Toast.LENGTH_SHORT] duration.
  *
  * @param message the message text.
  */
-fun Fragment.toastOnUI(message: CharSequence) = requireActivity().toastOnUI(message)
+fun Fragment.toastOnUi(message: CharSequence) = requireActivity().toastOnUi(message)
 
 /**
  * Display the simple Toast message with the [Toast.LENGTH_LONG] duration.