[代码] VoiceRecognition.java
package com.VoiceRecognition;
import Android.app.Activity;
import Android.content.Intent;
import Android.content.pm.PackageManager;
import Android.content.pm.ResolveInfo;
import Android.os.Bundle;
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.main);
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<ResolveInfo> 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);
//提示语音开始
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
//开始执行我们的Intent、语音识别
startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
}
//当语音结束时的回调函数onActivityResult
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK)
{
// 取得语音的字符
ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
mList.setAdapter(new ArrayAdapter<String>(this, Android.R.layout.simple_list_item_1, matches));
}
super.onActivityResult(requestCode, resultCode, data);
}
}
[代码] main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
Android:orientation="vertical"
Android:layout_width="fill_parent"
Android:layout_height="fill_parent"
>
<Button
Android:id="@+id/btn_speak"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
<ListView
Android:id="@+id/list"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
/>
</LinearLayout>
