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");

public class RecognizerIntent_TestActivity extends Activity {
  private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;
  private ListView mList;
  Button mButton;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    mButton = (Button) findViewById(R.id.button1);
    mButton.setOnClickListener(new myRecognizerIntentListener());
    mList = (ListView) findViewById(R.id.listView1);
  }
  public class myRecognizerIntentListener implements OnClickListener {
    public void onClick(View v) {
      try {
        // 用Intent来传递语音识别的模式,并且开启语音模式
        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);
        // 提示语言开始
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "请开始语音");
        // 开始语音识别
        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
      } catch (ActivityNotFoundException e) {
        Toast.makeText(RecognizerIntent_TestActivity.this, "找不到语音设备",
            Toast.LENGTH_LONG).show();
      }
    }
  }
  // 语音结束时的回调函数
  @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> results = data
          .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
      // 设置视图的更新
      mList.setAdapter(new ArrayAdapter<String>(this,
          android.R.layout.simple_list_item_1, results));
      String resultsString = "";
      for (int i = 0; i < results.size(); i++) {
        resultsString += results.get(i);
      }
      Toast.makeText(this, resultsString, Toast.LENGTH_LONG).show();
    }
    super.onActivityResult(requestCode, resultCode, data);
  }
}