Android 自带的语音识别例子初探

核心提示：import android.speech.RecognizerIntent;import android.view.View;import android.view.View.OnClickListener;import android.widget.ArrayAdapter;import android.widge

import android.speech.RecognizerIntent;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.ListView;

import java.util.ArrayList;

import java.util.List;

public class VoiceRecognition extends Activity implements OnClickListener {

private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;

private ListView mList;

/**

* Called with the activity is first created.

*/

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.voice_recognition);

Button speakButton = (Button) findViewById(R.id.btn_speak);

mList = (ListView) findViewById(R.id.list);

// Check to see if a recognition activity is present

PackageManager pm = getPackageManager();

List activities = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);

if (activities.size() != 0)

{

speakButton.setOnClickListener(this);

}

else

{

speakButton.setEnabled(false);

speakButton.setText("Recognizer not present");

}

}

public void onClick(View v)

{

if (v.getId() == R.id.btn_speak)

{

startVoiceRecognitionActivity();

}

}

private void startVoiceRecognitionActivity()

{

//通过Intent传递语音识别的模式

Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

//语言模式和自由形式的语音识别

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);