Android speech recognition function usage

Package com. king. android. speical; import java. util. arrayList; import com. king. android. r; import android. app. activity; import android. content. activityNotFoundException; import android. content. intent; 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;/*** Description: speech recognition function (only tested on a real machine) * by Andy. liu * Time: 07:38:27 **/public class VoiceActivity extends Activity implements OnClickListener {private static final int listener = 4321; @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. main); Button btnVoice = (Button) findViewById (R. id. btn_voice); btnVoice. setVisibility (View. VISIBLE); btnVoice. setOnClickListener (this) ;}@ Overridepublic void onClick (View v) {switch (v. getId () {case R. id. btn_voice: doStartVoice () ;}}/***** TODO: Start speech * Author: Andy. liu * Create Time: 07:42:48 * TAG: * Return: void */private void doStartVoice () {try {// The Speech Recognition mode transmitted through intent, intent intent = new Intent (RecognizerIntent. ACTION_RECOGNIZE_SPEECH); // language pattern and free-form idea recognition intent. putExtra (RecognizerIntent. EXTRA_LANGUAGE_MODEL, RecognizerIntent. LANGUAGE_MODEL_FREE_FORM); // indicates that the voice starts intent. putExtra (RecognizerIntent. EXTRA_PROMPT, "Start voice"); startActivityForResult (intent, VOICE_RECOGNITION_REQUEST_CODE);} catch (ActivityNotFoundException e) {// find the Toast Voice device. makeText (VoiceActivity. this, "no device found", Toast. LENGTH_LONG ). show () ;}@ Overrideprotected void onActivityResult (int requestCode, int resultCode, Intent data) {if (VOICE_RECOGNITION_REQUEST_CODE = requestCode & RESULT_ OK = resultCode) {ArrayList <String> results = data. getStringArrayListExtra (RecognizerIntent. EXTRA_RESULTS); StringBuilder sb = new StringBuilder (); for (String voice: results) {sb. append (voice);} Toast. makeText (VoiceActivity. this, sb. toString (), Toast. LENGTH_LONG ). show ();} super. onActivityResult (requestCode, resultCode, data );}}