android 语音识别

首先可以用以下代码测试你的机器是不是有语音识别功能：
[java]
PackageManager pm = getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(
        new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
if (activities.size() != 0) {
    /*Activity 存在*/
    Toast.makeText(AndroidVoiceActivity.this, "Activity 存在", Toast.LENGTH_LONG).show();
} else {
    /* Activity Not Found   未判断会抛出ActivityNotFoundException*/
    Toast.makeText(AndroidVoiceActivity.this, "Activity 不存在", Toast.LENGTH_LONG).show();
}

简单的Activity：
[java]
package com.relin.voice;

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.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class AndroidVoiceActivity extends Activity {
    /** Called when the activity is first created. */
    private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button button = (Button)findViewById(R.id.button1);

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                try{
                    Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
                    intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
                    intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音");
                    startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
                }catch (Exception e) {
                    // TODO: handle exception
                    Toast.makeText(AndroidVoiceActivity.this, "ActivityNotFoundException", Toast.LENGTH_LONG).show();
                }
            }
        });
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
            ArrayList<String> result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            String resultString = "";
            for (int i = 0; i < result.size(); i++) {
                resultString += result.get(i);
            }
            Toast.makeText(this, resultString, Toast.LENGTH_LONG).show();
        }
        super.onActivityResult(requestCode, resultCode, data);
    }


}

补充：移动开发 , Android ,