优化

app/src/main/java/io/legado/app/service/AudioPlayService.kt

@@ -121,6 +121,7 @@ class AudioPlayService : BaseService(),
     override fun onDestroy() {
         super.onDestroy()
         isRun = false
+        abandonFocus()
         exoPlayer.release()
         mediaSessionCompat?.release()
         unregisterReceiver(broadcastReceiver)
@@ -166,9 +167,12 @@ class AudioPlayService : BaseService(),
     /**
      * 暂停播放
      */
-    private fun pause() {
+    private fun pause(abandonFocus: Boolean = true) {
         try {
             pause = true
+            if (abandonFocus) {
+                abandonFocus()
+            }
             upPlayProgressJob?.cancel()
             position = exoPlayer.currentPosition.toInt()
             if (exoPlayer.isPlaying) exoPlayer.pause()
@@ -466,7 +470,7 @@ class AudioPlayService : BaseService(),
                 needResumeOnAudioFocusGain = true
                 if (!pause) {
                     needResumeOnAudioFocusGain = true
-                    pause()
+                    pause(false)
                 }
             }
             AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> {
@@ -549,6 +553,7 @@ class AudioPlayService : BaseService(),
     }
 
     /**
+     * 请求音频焦点
      * @return 音频焦点
      */
     private fun requestFocus(): Boolean {
@@ -558,4 +563,12 @@ class AudioPlayService : BaseService(),
         return MediaHelp.requestFocus(audioManager, mFocusRequest)
     }
 
+    /**
+     * 放弃音频焦点
+     */
+    private fun abandonFocus() {
+        @Suppress("DEPRECATION")
+        audioManager.abandonAudioFocus(this)
+    }
+
 }

app/src/main/java/io/legado/app/service/BaseReadAloudService.kt

@@ -92,6 +92,7 @@ abstract class BaseReadAloudService : BaseService(),
         super.onDestroy()
         isRun = false
         pause = true
+        abandonFocus()
         unregisterReceiver(broadcastReceiver)
         postEvent(EventBus.ALOUD_STATE, Status.STOP)
         upMediaSessionPlaybackState(PlaybackStateCompat.STATE_STOPPED)
@@ -147,8 +148,11 @@ abstract class BaseReadAloudService : BaseService(),
     abstract fun playStop()
 
     @CallSuper
-    open fun pauseReadAloud() {
+    open fun pauseReadAloud(abandonFocus: Boolean = true) {
         pause = true
+        if (abandonFocus) {
+            abandonFocus()
+        }
         upNotification()
         upMediaSessionPlaybackState(PlaybackStateCompat.STATE_PAUSED)
         postEvent(EventBus.ALOUD_STATE, Status.PAUSE)
@@ -228,6 +232,7 @@ abstract class BaseReadAloudService : BaseService(),
     }
 
     /**
+     * 请求音频焦点
      * @return 音频焦点
      */
     fun requestFocus(): Boolean {
@@ -241,6 +246,14 @@ abstract class BaseReadAloudService : BaseService(),
         return requestFocus
     }
 
+    /**
+     * 放弃音频焦点
+     */
+    private fun abandonFocus() {
+        @Suppress("DEPRECATION")
+        audioManager.abandonAudioFocus(this)
+    }
+
     /**
      * 更新媒体状态
      */
@@ -302,7 +315,7 @@ abstract class BaseReadAloudService : BaseService(),
                 AppLog.put("音频焦点暂时丢失并会很快再次获得,暂停朗读")
                 if (!pause) {
                     needResumeOnAudioFocusGain = true
-                    pauseReadAloud()
+                    pauseReadAloud(false)
                 }
             }
             AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK -> {

app/src/main/java/io/legado/app/service/HttpReadAloudService.kt

@@ -271,8 +271,8 @@ class HttpReadAloudService : BaseReadAloudService(),
     }
 
 
-    override fun pauseReadAloud() {
+    override fun pauseReadAloud(abandonFocus: Boolean) {
-        super.pauseReadAloud()
+        super.pauseReadAloud(abandonFocus)
         kotlin.runCatching {
             playIndexJob?.cancel()
             exoPlayer.pause()

app/src/main/java/io/legado/app/service/TTSReadAloudService.kt

@@ -121,8 +121,8 @@ class TTSReadAloudService : BaseReadAloudService(), TextToSpeech.OnInitListener
     /**
      * 暂停朗读
      */
-    override fun pauseReadAloud() {
+    override fun pauseReadAloud(abandonFocus: Boolean) {
-        super.pauseReadAloud()
+        super.pauseReadAloud(abandonFocus)
         textToSpeech?.stop()
     }
 

app/src/main/java/io/legado/app/ui/book/read/page/entities/TextPage.kt

@@ -201,6 +201,9 @@ data class TextPage(
         val maxIndex = min(lineIndex, lineSize)
         for (index in 0 until maxIndex) {
             length += textLines[index].charSize
+            if (textLines[index].isParagraphEnd) {
+                length++
+            }
         }
         return length + columnIndex
     }