Android语音识别应用程序无需弹出吗?

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我目前正在考虑用JAVA获得职业生涯,并决定从创建应用程序开始。我在这里有这个代码,我正在使用它来触发语音识别:

public class MainActivity extends Activity implements OnClickListener{

private static final int VR_REQUEST = 999;
private ListView wordList;
private final String LOG_TAG = "SpeechRepeatActivity";  
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button speechBtn = (Button) findViewById(R.id.speech_btn);
    wordList = (ListView) findViewById (R.id.word_list);
    PackageManager packManager= getPackageManager();
    List<ResolveInfo> intActivities = packManager.queryIntentActivities
                    (new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
    if (intActivities.size() !=0){
        speechBtn.setOnClickListener(this);
    } else {
        speechBtn.setEnabled(false);
        Toast.makeText(this,"Oops - Speech Recognition Not Supported!", 
                                             Toast.LENGTH_LONG).show();
        }       
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}
public void onClick(View v){
   if (v.getId() == R.id.speech_btn) {
    listenToSpeech();
   }
}
    private void listenToSpeech() {
    //start the speech recognition intent passing required data
    Intent listenIntent = 
                     new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    //indicate package
    listenIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
                                        getClass().getPackage().getName());
    //message to display while listening
    listenIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Say a word!");
    //set speech model
    listenIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, 
                                 RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    //specify number of results to retrieve
    listenIntent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 10);
    //start listening
    startActivityForResult(listenIntent, VR_REQUEST);
}
    @Override
    protected void onActivityResult(int requestCode, 
                                             int resultCode, Intent data) {
        //check speech recognition result 
        if (requestCode == VR_REQUEST && resultCode == RESULT_OK) {
    //store the returned word list as an ArrayList
    ArrayList<String> suggestedWords = data.
                     getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
    //set the retrieved list to display in the ListView 
            //using an ArrayAdapter
    wordList.setAdapter(new ArrayAdapter<String> 
                                       (this, R.layout.word, suggestedWords));
}
    //this detects which one the user clicks 
    wordList.setOnItemClickListener(new OnItemClickListener(){
        //click listener for items within list
        public void onItemClick(AdapterView<?> parent, 
                                           View view, int position, long id){
        //cast the 
        TextView wordView = (TextView)
        //retrive the chosen word
        String wordChosen= (String) wordView.
        //output for debugging
        Log.v(LOG_TAG, "chosen:" +wordChosen);
     }});
        super.onActivityResult(requestCode, resultCode, data);
  }
}

这是我的代码:

package com.example.speechrecognizertest;

import android.os.Bundle;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.TextView;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

private static final int VR_REQUEST = 999;
public static final String TAG = null;
private ListView wordList;
private final String LOG_TAG = "SpeechRepeatActivity";
private SpeechRecognizer mSpeechRecognizer;
private Intent mSpeechRecognizerIntent; 
private boolean mIslistening; 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button speechBtn = (Button) findViewById(R.id.speech_btn);
    wordList = (ListView) findViewById(R.id.word_list);
    PackageManager packManager = getPackageManager();
    List<ResolveInfo> intActivities = packManager.queryIntentActivities(
            new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
    mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
    mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                                     RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
                                     this.getPackageName());
    if (!mIslistening)
    {
        mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
    } else {
        speechBtn.setEnabled(false);
        Toast.makeText(this, "Oops - Speech Recognition Not Supported!",
                Toast.LENGTH_LONG).show();
    }
}


@Override
protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}



protected class SpeechRecognitionListener implements RecognitionListener
{

    @Override
    public void onBeginningOfSpeech()
    {               
        //Log.d(TAG, "onBeginingOfSpeech"); 
    }

    @Override
    public void onBufferReceived(byte[] buffer)
    {

    }

    @Override
    public void onEndOfSpeech()
    {
        //Log.d(TAG, "onEndOfSpeech");
     }

    @Override
    public void onError(int error)
    {
         mSpeechRecognizer.startListening(mSpeechRecognizerIntent);

        //Log.d(TAG, "error = " + error);
    }

    @Override
    public void onEvent(int eventType, Bundle params)
    {

    }

    @Override
    public void onPartialResults(Bundle partialResults)
    {

    }

    @Override
    public void onReadyForSpeech(Bundle params)
    {
        Log.d(TAG, "OnReadyForSpeech"); //$NON-NLS-1$
    }

    @Override
    public void onResults(Bundle results)
    {
        //Log.d(TAG, "onResults"); //$NON-NLS-1$
        ArrayList<String> suggestedWords =      results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        // matches are the return values of speech recognition engine
        // Use these values for whatever you wish to do

        wordList.setAdapter(new ArrayAdapter<String>(this, R.layout.word, suggestedWords));



    }

    @Override
    public void onRmsChanged(float rmsdB)
    {

    }

}
提问于
用户回答回答于

AndroidManifest.xml

添加以下权限:

<uses-permission android:name="android.permission.RECORD_AUDIO" />

类成员:

private SpeechRecognizer mSpeechRecognizer;
private Intent mSpeechRecognizerIntent; 
private boolean mIslistening; 

在onCreate :

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    .........
    .........
    mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(this);
    mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                                     RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
    mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
                                     this.getPackageName());


    SpeechRecognitionListener listener = new SpeechRecognitionListener();
    mSpeechRecognizer.setRecognitionListener(listener);

}   

在你的按钮监听器只使用这个代码:

if (!mIsListening)
{
    mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
}

在onDestroy :

if (mSpeechRecognizer != null)
{
        mSpeechRecognizer.destroy();
}

在你的活动内部创建内部类 :

protected class SpeechRecognitionListener implements RecognitionListener
{

    @Override
    public void onBeginningOfSpeech()
    {               
        //Log.d(TAG, "onBeginingOfSpeech"); 
    }

    @Override
    public void onBufferReceived(byte[] buffer)
    {

    }

    @Override
    public void onEndOfSpeech()
    {
        //Log.d(TAG, "onEndOfSpeech");
     }

    @Override
    public void onError(int error)
    {
         mSpeechRecognizer.startListening(mSpeechRecognizerIntent);

        //Log.d(TAG, "error = " + error);
    }

    @Override
    public void onEvent(int eventType, Bundle params)
    {

    }

    @Override
    public void onPartialResults(Bundle partialResults)
    {

    }

    @Override
    public void onReadyForSpeech(Bundle params)
    {
        Log.d(TAG, "onReadyForSpeech"); //$NON-NLS-1$
    }

    @Override
    public void onResults(Bundle results)
    {
        //Log.d(TAG, "onResults"); //$NON-NLS-1$
        ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        // matches are the return values of speech recognition engine
        // Use these values for whatever you wish to do
    }

    @Override
    public void onRmsChanged(float rmsdB)
    {
    }
}
用户回答回答于

不要忘记添加以下许可:---

<uses-permission android:name="android.permission.RECORD_AUDIO" />

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