android开发中系统自带语音模块的使用

需求：项目中需要添加语音搜索模块，增加用户体验

解决过程：在网上搜到语音搜索例子，参考网上代码，加入到了自己的项目，完成产品要求。这个问题很好解决，网上能找到很多的资料，但是没有直接导入工程就能用的例子，我这里写了一个完整的Demo，代码可以直接粘贴到自己项目中去，实现了语音搜索，并将搜索结果展示。

语音搜索大致流程：启动系统自带的Intent，Intent参数设置为RecognizerIntent.ACTION_RECOGNIZE_SPEECH，再加上一些提示参数

public class MainActivity extends Activity {private Button btnVoice;private TextView tvVoiceResult;private static final int VOICE_RECOGNITION_REQUEST_CODE = 123456;private Handler jumpHandler = new Handler() {public void handleMessage(android.os.Message msg) {tvVoiceResult.setText((String)msg.obj);};};    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btnVoice = (Button) findViewById(R.id.btnVoice);        tvVoiceResult = (TextView) findViewById(R.id.tvVoiceResult);        btnVoice.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {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, "请开始说话");        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);}catch(ActivityNotFoundException e) {AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("语音识别");builder.setMessage("您的手机暂不支持语音搜索功能，点击确定下载安装Google语音搜索软件。您也可以在各应用商店搜索“语音搜索”进行下载安装。");builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {//跳转到下载语音网页}});builder.setNegativeButton("取消", null);builder.show();}}});    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == MainActivity.RESULT_OK) {        ArrayList<String> matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);        if(matches.size() > 0) {        Message msg = new Message();        msg.obj = matches.get(0);        jumpHandler.sendMessage(msg);        }        }    }    }