语音识别意图无法在单击按钮时打开

Question

我正在通过简单地对其答复进行硬编码来开发一个简单的助手应用程序。 它具有一个按钮，单击该按钮可显示语音识别器的意图。 但单击按钮时现在没有显示。 我在这里附加了我的代码，请帮助我找到导致错误的错误。

还请通过只说一些“ Ok google”中的指定单词来帮助我如何在不点击按钮的情况下调用语音识别器。

MainActivity.java

package com.example.rv00485448.neha1;

import android.content.Intent;
import android.os.Build;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.speech.tts.TextToSpeech;
import android.speech.tts.UtteranceProgressListener;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import java.util.ArrayList;
import java.util.Locale;

import static android.speech.RecognizerIntent.ACTION_RECOGNIZE_SPEECH;

public class MainActivity extends Activity{


    private TextToSpeech tts;
    private ArrayList<String> questions;

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

        findViewById(R.id.microphoneButton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                listen();
            }
        });
        loadQuestions();

        tts = new TextToSpeech(MainActivity.this, new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if (status == TextToSpeech.SUCCESS) {
                    int result = tts.setLanguage(Locale.US);
                    if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                        Log.e("TTS", "This Language is not supported");
                    }
                    speak("Hello");

                } else {
                    Log.e("TTS", "Initilization Failed!");
                }
            }
        });

    }

    private void loadQuestions(){
        questions = new ArrayList<>();
         questions.clear();
        questions.add("hi how are you");
        questions.add("I am good. how are you feeling today?");
        questions.add("Do you have vitals readings?");
        questions.add("you seem to have fever. Do you want me to book an appointment with doctor nandan ");
        questions.add("I have booked an appointment with doctor nandan at 5 PM");
        questions.add("Thank you too");
   }

    private void listen(){
        Intent i = new Intent(ACTION_RECOGNIZE_SPEECH);
        i.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        i.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
        i.putExtra(RecognizerIntent.EXTRA_PROMPT, "Say something");
     //   speak("I am listening to you");
 //        try {
//            startActivityForResult(i, 100);
 //        } catch (ActivityNotFoundException a) {
//            Toast.makeText(MainActivity.this, "Your device doesn't support Speech Recognition", Toast.LENGTH_SHORT).show();
//        }

}



    @Override
    public void onDestroy() {
        if (tts != null) {
            tts.stop();
            tts.shutdown();
        }
        super.onDestroy();
    }

    private void speak(String text){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        tts.speak(text, TextToSpeech.QUEUE_FLUSH, null, null);

        }else{
            tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data)     {
         super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == 100){
            if (resultCode == RESULT_OK && null != data) {
                ArrayList<String> res = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
                String inSpeech = res.get(0);
                recognition(inSpeech);
            }
        }
    }

    private void recognition(String text){

        switch (text)
        {
            case "hello":
            {
                speak(questions.get(0));
                break;
            }

            case "fine how about you":
            {
                speak(questions.get(1));
                break;
            }

            case "feeling dizzy":
            {
                speak(questions.get(2));
                break;
             }

               case "yeah":
                 {
                    speak(questions.get(3));
                    break;
                 }

            case "yes":
            {
                speak(questions.get(4));
                break;
            }

            case "thank you":
            {
                speak(questions.get(5));
                 break;
            }

        }
    }
}

Answer 1

您没有触发该活动。

在listen方法中使用startActivityForResult（i）。

Answer 2

您需要在清单文件中添加INTERNET权限