Question

所以我正在编写一个应用程序，通过TextToSpeech创建一些语音文本的WAV文件。我已确认文件已成功创建

当我尝试播放时，应用程序崩溃了

致命的例外：主要过程：com.burfdevelopment.lejostoandroid，PID：6539 java.lang.IllegalStateException 在android.media.MediaPlayer._setDataSource（本机方法）在android.media.MediaPlayer.setDataSource（MediaPlayer.java:1133）在android.media.MediaPlayer.setDataSource（MediaPlayer.java:1118）在android.media.MediaPlayer.setDataSource（MediaPlayer.java:1097）在android.media.MediaPlayer.setDataSource（MediaPlayer.java:1046）在 com.burfdevelopment.lejostoandroid.MainActivity.speakWords（MainActivity.java:351）在 com.burfdevelopment.lejostoandroid.MainActivity.onInit（MainActivity.java:436）在 android.speech.tts.TextToSpeech.dispatchOnInit（TextToSpeech.java:814）在android.speech.tts.TextToSpeech.-wrap4（TextToSpeech.java）在 android.speech.tts.TextToSpeech $连接$ SetupConnectionAsyncTask.onPostExecute（TextToSpeech.java:2174）在 android.speech.tts.TextToSpeech $连接$ SetupConnectionAsyncTask.onPostExecute（TextToSpeech.java:2168）在android.os.AsyncTask.finish（AsyncTask.java:651）在android.os.AsyncTask.-wrap1（AsyncTask.java）在 android.os.AsyncTask $ InternalHandler.handleMessage（AsyncTask.java:668）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:148）在android.app.ActivityThread.main（ActivityThread.java:5417） at java.lang.reflect.Method.invoke（Native Method）在 com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:726）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:616）

代码

private void speakWords(String speech) {
        //implement TTS here
        if (speech != null && speech.length() > 0) {

            //
            HashMap<String, String> myHashAlarm = new HashMap<String, String>();
            myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_STREAM, String.valueOf(AudioManager.STREAM_ALARM));
            myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_VOLUME, "1");
            myHashAlarm.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, "SOME MESSAGE");

            String root = Environment.getExternalStorageDirectory().toString();

            soundFilename = root + "/simon.wav";
            soundFile = new File(soundFilename);
            if (soundFile.exists())
                soundFile.delete();

            if(myTTS.synthesizeToFile(speech, myHashAlarm, soundFilename)== TextToSpeech.SUCCESS) {

                try {
                    mMediaPlayer.setDataSource(soundFilename);
                    mMediaPlayer.prepare();
                    mMediaPlayer.start();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            else {
                Toast.makeText(getBaseContext(),"Oops! Sound file not created",Toast.LENGTH_SHORT).show();
            }

        }
    }

我可以通过FileManager在实际设备上播放文件。我以后尝试过播放，我试过播放文件。数据源行就是它崩溃的地方。

mMediaPlayer.setDataSource（soundFilename）;

Answer 1

尝试使用以下代码。

// Make sure you are writing access permission in Manifest.
soundFilename = Environment.getExternalStorageDirectory() + "/simon.wav";

mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(soundFilename);

mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener()
{
    @Override
    public void onPrepared(MediaPlayer mp)
    {
        mMediaPlayer.start();
    }
});
mMediaPlayer.prepareAsync();

Android：播放由TTS

1 个答案: