feat: 优化

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

@@ -21,6 +21,7 @@ class TTSReadAloudService : BaseReadAloudService(), TextToSpeech.OnInitListener
 
     companion object {
         private var textToSpeech: TextToSpeech? = null
+        private var ttsInitFinish = false
 
         fun clearTTS() {
             textToSpeech?.let {
@@ -28,11 +29,10 @@ class TTSReadAloudService : BaseReadAloudService(), TextToSpeech.OnInitListener
                 it.shutdown()
             }
             textToSpeech = null
+            ttsInitFinish = false
         }
     }
 
-    private var ttsInitFinish = false
-
     override fun onCreate() {
         super.onCreate()
         textToSpeech = TextToSpeech(this, this)