[3.4.0][Fix]解决Tts初始化时主线程耗时过长的问题

tts/tts-pad/src/main/java/com/mogo/tts/pad/PadTTS.java

@@ -89,6 +89,7 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
             if (mEngine != null) {
                 mEngine.destroy();
                 mEngine = null;
+                isInitEngine = false;
             }
             mHasAuth = false;
             mSpeakVoiceMap.clear();
@@ -123,6 +124,7 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
     private boolean mHasAuth;
     private int retryCount;
     private volatile boolean isAuthing = false;
+    private boolean isInitEngine;
 
     private void initFlushStatus() {
         if (!mHasFlush) {
@@ -208,10 +210,8 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
     }
 
     private void initTtsEngine() {
+        if (isInitEngine) return;
         CallerLogger.INSTANCE.d(TAG, "initTtsEngine");
-        if (mEngine != null) {
-            mEngine.destroy();
-        }
 //        AILocalTTSConfig config = new AILocalTTSConfig();
 //        // 设置assets目录下合成字典名
 //        config.setDictResource(TTS_DICT_RES);//普通话字典
@@ -253,6 +253,7 @@ public class PadTTS implements IMogoTTS, VoiceClient.VoiceCmdCallBack, OnTtsList
         // 保存合成音频到指定路径，格式为wav
         mAILocalTTSIntent.setSaveAudioFileName(Environment.getExternalStorageDirectory() + "/tts/"
                 + System.currentTimeMillis() + ".wav");
+        isInitEngine = true;
     }
 
     /**