android 语音识别

package com.seeol.speech;import java.util.ArrayList;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.speech.RecognizerIntent;import android.view.Menu;import android.widget.EditText;import android.widget.Toast;/** * 语音识别 * @author linchunda * */public class MainActivity extends Activity {private final static int REQUEST_RECOGNIZE = 100;private EditText edit_edittext;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);edit_edittext = (EditText) findViewById(R.id.edit_edittext);Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);//EXTRA_LANGUAGE_MODEL帮助优化语音识别器的处理结果//典型的语音到文本的识别应该用LANGUAGE_MODEL_FREE_FORM//如果较短的识别，RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCHintent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);//EXTRA_PROMPT提示用户开始语音识别的字符串intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Tell me your name");try {startActivityForResult(intent, REQUEST_RECOGNIZE);} catch (Exception e) {//没有语音识别，从市场下载AlertDialog.Builder builder= new AlertDialog.Builder(this);builder.setTitle("No Available");builder.setMessage("There is currently no recognition application installed."+ "would you like to download one?");builder.setPositiveButton("yes", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Intent marketIntent = new Intent(Intent.ACTION_VIEW);marketIntent.setData(Uri.parse("market://details?id=com.google.android.voicesearch"));}});builder.setNegativeButton("No", null);builder.create().show();}}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if (requestCode == REQUEST_RECOGNIZE&& resultCode == Activity.RESULT_OK) {ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);StringBuffer sb = new StringBuffer();for (String string : matches) {sb.append(string);sb.append('\n');}edit_edittext.setText(sb.toString());} else {Toast.makeText(this, "操作取消", Toast.LENGTH_LONG).show();}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}}