Question

我使用单个按钮完成两项任务。

Watson Conversation。
Watson Text to Speech。

我的代码只有在我的TextView有一些文本名称（字符串）时才会执行，但即使在手机用户界面上的TextView显示屏上更新了新的对话响应，文本到语音也在播放最后一个对话响应。继续此操作这里Race condition with UI thread issue.

我也发现，如果我将TextView保持为空，我会收到错误：代码在这里：

private class ConversationTask extends AsyncTask<String, Void, String> {
    String textResponse = new String();
    @Override
    protected String doInBackground(String... params) {
        System.out.println("in doInBackground");
        MessageRequest newMessage = new MessageRequest.Builder().inputText(params[0]).context(context).build();
        // async
        GLS_service.message("xxxxxxx", newMessage).enqueue(new ServiceCallback<MessageResponse>() {
            @Override
            public void onResponse(MessageResponse response) {
                context = response.getContext();
                textResponse = response.getText().get(0);
                reply.setText(textResponse);
                System.out.println(textResponse);
            }
            @Override
            public void onFailure(Exception e) {
            }
        });
        return textResponse;
    }
}

//
private class WatsonTask extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(final String... textToSpeak) {
       /* runOnUiThread(new Runnable() {
            @Override
            public void run() {
                textView.setText(" ");
            }
        });*/
        TextToSpeech textToSpeech = initTextToSpeechService();
        streamPlayer = new StreamPlayer();
        streamPlayer.playStream(textToSpeech.synthesize(textToSpeak[0], Voice.EN_LISA).execute());
        return "Text to Speech Done";
    }
    /*@Override protected void onPostExecute(String result) {
        textView.setText("");
    }*/
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //Register the UI controls.
    input = (EditText) findViewById(R.id.input);
    send = (ImageButton) findViewById(R.id.send);
    textView = (TextView) findViewById(R.id.textView);
    reply = (TextView) findViewById(R.id.reply);
    play = (ImageButton) findViewById(R.id.play);
    new ConversationTask().execute("");

    //Button function
    send.setOnClickListener(action3);
}


  //five actions on button click
public void action5() {
    String textResponse = new String();
    System.out.println("Text to Speech:" + reply.getText());
    //textView.setText("");
    WatsonTask task = new WatsonTask();
    task.execute(String.valueOf(reply.getText()));
    //new WatsonTask().execute(reply.getText().toString());
}


View.OnClickListener action3 = new View.OnClickListener() {
    public void onClick(View v) {
        //action here//
        new ConversationTask().execute(input.getText().toString());
        action5();
    }
};

}

请帮忙。

Answer 1

行动3

View.OnClickListener action3 = new View.OnClickListener() {
    public void onClick(View v) {
        //action here//
        new ConversationTask().execute(input.getText().toString());
    }
};

行动5

public void action5(String replyString) {
    WatsonTask task = new WatsonTask();
    task.execute(replyString);
}

对话任务

private class ConversationTask extends AsyncTask<String, Void, String> {
    String textResponse = new String();
    @Override
    protected String doInBackground(String... params) {
        System.out.println("in doInBackground");
        MessageRequest newMessage = new MessageRequest.Builder().inputText(params[0]).context(context).build();
        // async
        GLS_service.message("xxxxxxx", newMessage).enqueue(new ServiceCallback<MessageResponse>() {
            @Override
            public void onResponse(MessageResponse response) {
                context = response.getContext();
                textResponse = response.getText().get(0);
                reply.setText(textResponse);
                action5(textResponse);
            }
            @Override
            public void onFailure(Exception e) {
            }
        });
        return textResponse;
    }
}

WatsonTask

private class WatsonTask extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(final String... textToSpeak) {
        reply.setText(textToSpeak[0]);
        TextToSpeech textToSpeech = initTextToSpeechService();
        streamPlayer = new StreamPlayer();
        streamPlayer.playStream(textToSpeech.synthesize(textToSpeak[0], Voice.EN_LISA).execute());
        return textToSpeak[0];
    }
}

为了完整起见，请注意Marcin Jedynak的评论

Answer 2

我认为您的计划方案将遵循下一个序列：

输入文字到对话任务。
从GLS_service.message()获取对话结果。
输入序列2的结果，以发出声音。

因此，请尝试更改此代码。

// There is no need to return String. Just send result to TextToSpeech.
//private class ConversationTask extends AsyncTask<String, Void, String> {
private class ConversationTask extends AsyncTask<String, Void, Void> {
    String textResponse = new String();
    @Override
    protected String doInBackground(String... params) {
        System.out.println("in doInBackground");
        MessageRequest newMessage = new MessageRequest.Builder().inputText(params[0]).context(context).build();
        // async
        GLS_service.message("xxxxxxx", newMessage).enqueue(new ServiceCallback<MessageResponse>() {
            @Override
            public void onResponse(MessageResponse response) {
                context = response.getContext();
                textResponse = response.getText().get(0);
                reply.setText(textResponse);
                System.out.println(textResponse);
                action5(textResponse); // It is real result that you want.
            }
            @Override
            public void onFailure(Exception e) {
            }
        });
        //return textResponse; // Not necessary.
    }
}

//
private class WatsonTask extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(final String... textToSpeak) {
       /* runOnUiThread(new Runnable() {
            @Override
            public void run() {
                textView.setText(" ");
            }
        });*/
        TextToSpeech textToSpeech = initTextToSpeechService();
        streamPlayer = new StreamPlayer();
        streamPlayer.playStream(textToSpeech.synthesize(textToSpeak[0], Voice.EN_LISA).execute());
        return "Text to Speech Done";
    }
    /*@Override protected void onPostExecute(String result) {
        textView.setText("");
    }*/
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //Register the UI controls.
    input = (EditText) findViewById(R.id.input);
    send = (ImageButton) findViewById(R.id.send);
    textView = (TextView) findViewById(R.id.textView);
    reply = (TextView) findViewById(R.id.reply);
    play = (ImageButton) findViewById(R.id.play);
    new ConversationTask().execute("");

    //Button function
    send.setOnClickListener(action3);
}


  //five actions on button click
// Need a parameter to get String.
//public void action5() {
public void action5(String text) {
    // String textResponse = new String(); // Replace to parameter as "text".
    //System.out.println("Text to Speech:" + reply.getText());
    System.out.println("Text to Speech:" + text);
    //textView.setText("");
    WatsonTask task = new WatsonTask();
    //task.execute(String.valueOf(reply.getText()));
    task.execute(text); // Replace to parameter as "text".
    //new WatsonTask().execute(reply.getText().toString());
}


View.OnClickListener action3 = new View.OnClickListener() {
    public void onClick(View v) {
        //action here//
        new ConversationTask().execute(input.getText().toString());
        // action5(); // This invoking is not necessary at this point.
        // Try to invoke this method after you get conversation result.
    }
};

即使你改变了它也没有用，我想知道你如何实现initTextToSpeechService()方法。

希望这会对你有所帮助。

单键多动作

2 个答案: