如何检查tts是否讲完了？

Question

我创建了一个 Text To Speech android 应用程序。 我想将按钮文本从说话更改为停止，然后在完成说话时再次说话。

它有两个按钮——全部清除和说话。 说话应更改为单击时停止，并在说话完成后再次说话。

活动截图（UI）

我在 StackOverflow 和网络上搜索了很多，包括他们的官方文档，但找不到适合我的程序的解决方案。

请帮助我，我是 android 新手。 谢谢你！

  //text to speech

    t1 = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
        @Override
        public void onInit(int status) {

            if (status != TextToSpeech.ERROR)
                t1.setLanguage(Locale.UK);

                }
    });




    //onClick
    b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String toSpeak = ed1.getText().toString();
            if(flag==0) { //flag variable to check state and to change button text
                if(toSpeak=="")
                {
                    Toast.makeText(getApplicationContext(), "Empty, enter something!", Toast.LENGTH_SHORT).show();
                }
                else {
                    Toast.makeText(getApplicationContext(), "Speaking", Toast.LENGTH_SHORT).show();
                    t1.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null);
                    flag = 1;
                    b1.setText("Stop");
                    flag = 1;
                }
            }
            else {

                flag=0;
                String te=ed1.getText().toString();
                ed1.setText("");
                toSpeak = ed1.getText().toString();
                ed1.setText(te);
                t1.speak(toSpeak, TextToSpeech.QUEUE_FLUSH, null);
                b1.setText("Play");
                Toast.makeText(getApplicationContext(), "Stopped", Toast.LENGTH_SHORT).show();




            }

        }
    });


//clear all button. clears the text field and changes text on the button1 to play
        b2.setOnClickListener(new View.OnClickListener() {
            @Override
        public void onClick(View view) {

                ed1.setText("");
                b1.setText("Play");flag=0;
        }
        });

Answer 1

不要使用 'TextToSpeech.OnUtteranceCompletedListener' 使用下面的一个：

  @Override
  public void onInit(int status) {
    if (status == TextToSpeech.SUCCESS) {
    yourTTS.setOnUtteranceProgressListener(new UtteranceProgressListener() {
        @Override
        public void onDone(String utteranceId) {
            // Log.d("YourActivity", "TtS Compeleted ");
        }

        @Override
        public void onError(String utteranceId) {
        }

        @Override
        public void onStart(String utteranceId) {
        }
      });
     } else {
    Log.e("YourActivity", " TTS Failed!");
   }
}

弃用的 TextToSpeech.OnUtteranceCompletedListener

Answer 2

尝试这个

textToSpeech=new TextToSpeech(this, new TextToSpeech.OnInitListener() {
    @Override
    public void onInit(int status) {
        if (status==TextToSpeech.SUCCESS){
            int result=textToSpeech.setLanguage(Locale.ENGLISH);

            if (result==TextToSpeech.LANG_MISSING_DATA||result==TextToSpeech.LANG_NOT_SUPPORTED){
                Log.i("TextToSpeech","Language Not Supported");
            }

            textToSpeech.setOnUtteranceProgressListener(new UtteranceProgressListener() {
                @Override
                public void onStart(String utteranceId) {
                    Log.i("TextToSpeech","On Start");
                }

                @Override
                public void onDone(String utteranceId) {
                    Log.i("TextToSpeech","On Done");
                }

                @Override
                public void onError(String utteranceId) {
                    Log.i("TextToSpeech","On Error");
                }
            });

        }else {
            Log.i("TextToSpeech","Initialization Failed");
        }
    }
});

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    textToSpeech.speak(text,TextToSpeech.QUEUE_FLUSH,null,TextToSpeech.ACTION_TTS_QUEUE_PROCESSING_COMPLETED);
}

Answer 3

覆盖TextToSpeech.OnUtteranceCompletedListener方法。 完整的文档在这里。 当 TTS 服务完成合成话语时将调用的侦听器。

  @Override
    public void onUtteranceCompleted(String utteranceId) {
        Log.i("CALLBACK", utteranceId);

    }

希望能帮到你！！