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Android 輕松實現語音識別

編輯：初級開發

完整代碼如下：package com.example.android.apis.app;import com.example.android.apis.R;import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.VIEw;
import android.view.VIEw.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListVIEw;import Java.util.ArrayList;
import Java.util.List;
public
class VoiceRecognition extends Activity implements OnClickListener { private
static
final
int VOICE_RECOGNITION_REQUEST_CODE =
1234; private ListVIEw mList;
@Override
public
void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);       // Inflate our UI from its XML layout description.
      setContentVIEw(R.layout.voice_recognition);       // Get display items for later interaction
      Button speakButton = (Button) findViewById(R.id.btn_speak);       mList = (ListView) findVIEwById(R.id.list);       // Check to see if a recognition activity is present
      PackageManager pm = getPackageManager();
      List<ResolveInfo> activities = pm.queryIntentActivitIEs(
            new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
      if (activitIEs.size() !=
0) {
         speakButton.setOnClickListener(this);
      } else {
         speakButton.setEnabled(false);
         speakButton.setText("Recognizer not present"); }
public
void onClick(VIEw v) {
      if (v.getId() == R.id.btn_speak) {
         startVoiceRecognitionActivity(); }
private
void startVoiceRecognitionActivity() {
      Intent intent =
new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
      intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
            RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
      intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
      startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); @Override
protected
void onActivityResult(int requestCode, int resultCode, Intent data) {
      if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
         // Fill the list vIEw with the strings the recognizer thought it could have heard
         ArrayList<String> matches = data.getStringArrayListExtra(
                  RecognizerIntent.EXTRA_RESULTS);
         mList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
                  matches));
      }       super.onActivityResult(requestCode, resultCode, data); }