Android 开发系统自带语音模块应用

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); 
intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "请开始说话"); 

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() { 
       
      @Override 
      public 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() { 
            @Override 
            public 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); 
      } 
    } 
  } 
   
}