diff --git a/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt b/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
index 041226de0..87a01e5d5 100644
--- a/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/audio/AudioPlayActivity.kt
@@ -4,10 +4,12 @@ import android.app.Activity
 import android.content.Intent
 import android.graphics.drawable.Drawable
 import android.os.Bundle
+import android.view.KeyEvent
 import android.widget.SeekBar
 import androidx.lifecycle.Observer
 import com.bumptech.glide.RequestBuilder
 import com.bumptech.glide.request.RequestOptions
+import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.Bus
@@ -15,15 +17,24 @@ import io.legado.app.constant.Status
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BlurTransformation
 import io.legado.app.help.ImageLoader
+import io.legado.app.help.storage.Backup
+import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.dialogs.noButton
+import io.legado.app.lib.dialogs.okButton
 import io.legado.app.service.help.AudioPlay
 import io.legado.app.ui.chapterlist.ChapterListActivity
+import io.legado.app.ui.main.MainActivity
+import io.legado.app.utils.applyTint
 import io.legado.app.utils.getViewModel
 import io.legado.app.utils.observeEvent
+import io.legado.app.utils.snackbar
 import kotlinx.android.synthetic.main.activity_audio_play.*
+import kotlinx.android.synthetic.main.activity_book_read.*
 import kotlinx.android.synthetic.main.view_title_bar.*
 import org.apache.commons.lang3.time.DateFormatUtils
 import org.jetbrains.anko.sdk27.listeners.onClick
 import org.jetbrains.anko.sdk27.listeners.onLongClick
+import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.startActivityForResult
 
 class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_audio_play),
@@ -136,6 +147,7 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
             }
         }
         observeEvent<Int>(Bus.AUDIO_PROGRESS) {
+            viewModel.durPageIndex = it
             if (!adjustProgress) player_progress.progress = it
             tv_dur_time.text = DateFormatUtils.format(it.toLong(), "mm:ss")
         }
@@ -145,6 +157,58 @@ class AudioPlayActivity : VMBaseActivity<AudioPlayViewModel>(R.layout.activity_a
         }
     }
 
+    override fun onKeyLongPress(keyCode: Int, event: KeyEvent?): Boolean {
+        when (keyCode) {
+            KeyEvent.KEYCODE_BACK -> {
+                page_view.snackbar(R.string.to_backstage, R.string.ok) {
+                    startActivity<MainActivity>()
+                }
+                return true
+            }
+        }
+        return super.onKeyLongPress(keyCode, event)
+    }
+
+    override fun onKeyUp(keyCode: Int, event: KeyEvent?): Boolean {
+        when (keyCode) {
+            KeyEvent.KEYCODE_BACK -> {
+                event?.let {
+                    if ((event.flags and KeyEvent.FLAG_CANCELED_LONG_PRESS == 0)
+                        && event.isTracking
+                        && !event.isCanceled
+                    ) {
+                        if (status == Status.PLAY) {
+                            AudioPlay.pause(this)
+                            return true
+                        }
+                    }
+                }
+            }
+        }
+        return super.onKeyUp(keyCode, event)
+    }
+
+    override fun finish() {
+        viewModel.book?.let {
+            if (!viewModel.inBookshelf) {
+                this.alert(title = getString(R.string.add_to_shelf)) {
+                    message = getString(R.string.check_add_bookshelf, it.name)
+                    okButton { viewModel.inBookshelf = true }
+                    noButton { viewModel.removeFromBookshelf { super.finish() } }
+                }.show().applyTint()
+            } else {
+                super.finish()
+            }
+        } ?: super.finish()
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        if (!BuildConfig.DEBUG) {
+            Backup.autoBackup()
+        }
+    }
+
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         if (resultCode == Activity.RESULT_OK) {
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 c960350e3..bcedc99f2 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
@@ -6,7 +6,6 @@ import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
-import io.legado.app.constant.BookType
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BookHelp
@@ -24,7 +23,6 @@ class AudioPlayViewModel(application: Application) : BaseViewModel(application)
     var callBack: CallBack? = null
     var durChapterIndex = 0
     var durPageIndex = 0
-    var isLocalBook = true
     var webBook: WebBook? = null
     private val loadingChapters = arrayListOf<Int>()
 
@@ -42,7 +40,6 @@ class AudioPlayViewModel(application: Application) : BaseViewModel(application)
                 coverData.postValue(book.getDisplayCover())
                 durChapterIndex = book.durChapterIndex
                 durPageIndex = book.durChapterPos
-                isLocalBook = book.origin == BookType.local
                 App.db.bookSourceDao().getBookSource(book.origin)?.let {
                     webBook = WebBook(it)
                 }
@@ -223,6 +220,16 @@ class AudioPlayViewModel(application: Application) : BaseViewModel(application)
         }
     }
 
+    fun removeFromBookshelf(success: (() -> Unit)?) {
+        execute {
+            book?.let {
+                App.db.bookDao().delete(it.bookUrl)
+            }
+        }.onSuccess {
+            success?.invoke()
+        }
+    }
+
     interface CallBack {
         fun contentLoadFinish(bookChapter: BookChapter, content: String)
     }
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 9a4595a2b..f945a3197 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
@@ -199,7 +199,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
     override fun onKeyLongPress(keyCode: Int, event: KeyEvent?): Boolean {
         when (keyCode) {
             KeyEvent.KEYCODE_BACK -> {
-                page_view.snackbar("转到后台", "确定") {
+                page_view.snackbar(R.string.to_backstage, R.string.ok) {
                     startActivity<MainActivity>()
                 }
                 return true
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index adf54661f..54eafa2b4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -556,5 +556,6 @@
     <string name="book_type">类型:</string>
     <string name="book_type_text">文本</string>
     <string name="book_type_audio">音频</string>
+    <string name="to_backstage">转到后台</string>
 
 </resources>