Android實現語音識別代碼

 　　蘋果的iphone 有語音識別用的是Google 的技術，做為Google 力推的Android 自然會將其核心技術往Android 系統裡面植入，並結合google 的雲端技術將其發揚光大。 所以Google Voice Recognition在Android 的實現就變得極其輕松。

　　語音識別，借助於雲端技術可以識別用戶的語音輸入，包括語音控制等技術，下面我們將利用Google 提供的Api 實現這一功能。 功能點為：通過用戶語音將用戶輸入的語音識別出來，並打印在列表上。 功能界面如下：

　　用戶通過點擊speak按鈕顯示界面：

　　用戶說完話後，將提交到雲端搜索：

　　在雲端搜索完成後，返回打印數據：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */   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;   /** * Sample code that invokes the speech recognition intent API. */ public class VoiceRecognition extends Activity implements OnClickListener {   private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;   private ListView mList;   /** * Called with the activity is first created. */ @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 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"); } }   /** * Handle the click on the start recognition button. */ public void onClick(View v) { if (v.getId() == R.id.btn_speak) { startVoiceRecognitionActivity(); } }   /** * Fire an intent to start the speech recognition activity. */ 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); }   /** * Handle the results from the recognition activity. */ @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 matches = data.getStringArrayListExtra( RecognizerIntent.EXTRA_RESULTS); mList.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, matches)); }   super.onActivityResult(requestCode, resultCode, data); } }

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