Android 轻松实现语音识别

苹果的iphone 有语音识别用的是Google 的技术，做为Google 力推的Android 自然会将其核心技术往Android 系统里面植入，并结合google 的云端技术将其发扬光大。

所以Google Voice Recognition在Android 的实现就变得极其轻松。
Android 轻松实现语音识别

语音识别，借助于云端技术可以识别用户的语音输入，包括语音控制等技术，下面我们将利用Google 提供的Api 实现这一功能。

功能点为：通过用户语音将用户输入的语音识别出来，并打印在列表上。

功能界面如下：

用户通过点击speak按钮显示界面：

用户说完话后，将提交到云端搜索：

在云端搜索完成后，返回打印数据：

标签： Android 语音识别 Android SDK

代码片段(1)

[代码] Android 轻松实现语音识别的完整代码

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001 * Copyright (C) 2008 The Android Open Source Project

002 *

003 * Licensed under the Apache License, Version 2.0 (the "License");

004 * you may not use this file except in compliance with the License.

005 * You may obtain a copy of the License at

006 *

007 * http://www.apache.org/licenses/LICENSE-2.0

008 *

009 * Unless required by applicable law or agreed to in writing, software

010 * distributed under the License is distributed on an "AS IS" BASIS,

011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

012 * See the License for the specific language governing permissions and

013 * limitations under the License.

014 */

015

016 package com.example.android.apis.app;

017

018 import com.example.android.apis.R;

019

020 import android.app.Activity;

021 import android.content.Intent;

022 import android.content.pm.PackageManager;

023 import android.content.pm.ResolveInfo;

024 import android.os.Bundle;

025 import android.speech.RecognizerIntent;

026 import android.view.View;

027 import android.view.View.OnClickListener;

028 import android.widget.ArrayAdapter;

029 import android.widget.Button;

030 import android.widget.ListView;

031

032 import java.util.ArrayList;

033 import java.util.List;

034

035 /**

036 * Sample code that invokes the speech recognition intent API.

037 */

038 public class VoiceRecognition extends Activity implements OnClickListener {

039

040 private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;

041

042 private ListView mList;

043

044 /**

045 * Called with the activity is first created.

046 */

047 @Override

048 public void onCreate(Bundle savedInstanceState) {

049 super.onCreate(savedInstanceState);

050

051 // Inflate our UI from its XML layout description.

052 setContentView(R.layout.voice_recognition);

053

054 // Get display items for later interaction

055 Button speakButton = (Button) findViewById(R.id.btn_speak);

056

057 mList = (ListView) findViewById(R.id.list);

058

059 // Check to see if a recognition activity is present

060 PackageManager pm = getPackageManager();

061 List activities = pm.queryIntentActivities(

062 new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);

063 if (activities.size() != 0) {

064 speakButton.setOnClickListener(this);

065 } else {

066 speakButton.setEnabled(false);

067 speakButton.setText("Recognizer not present");

068 }

069 }

070

071 /**

072 * Handle the click on the start recognition button.

073 */

074 public void onClick(View v) {

075 if (v.getId() == R.id.btn_speak) {

076 startVoiceRecognitionActivity();

077 }

078 }

079

080 /**

081 * Fire an intent to start the speech recognition activity.

082 */

083 private void startVoiceRecognitionActivity() {

084 Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

085 intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

086 RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

087 intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");

088 startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);

089 }

090

091 /**

092 * Handle the results from the recognition activity.

093 */

094 @Override

095 protected void onActivityResult(int requestCode, int resultCode, Intent data) {

096 if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {

097 // Fill the list view with the strings the recognizer thought it could have heard

098 ArrayList matches = data.getStringArrayListExtra(

099 RecognizerIntent.EXTRA_RESULTS);

100 mList.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1,

101 matches));

102 }

103

104 super.onActivityResult(requestCode, resultCode, data);

105 }

106 }

代码片段(1)

[代码] Android 轻松实现语音识别的完整代码

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