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。 
 
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)[全屏查看所有代码]

1. [代码]Android 轻松实现语音识别的完整代码     

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 

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

017 

018import com.example.android.apis.R;

019 

020import android.app.Activity;

021import android.content.Intent;

022import android.content.pm.PackageManager;

023import android.content.pm.ResolveInfo;

024import android.os.Bundle;

025import android.speech.RecognizerIntent;

026import android.view.View;

027import android.view.View.OnClickListener;

028import android.widget.ArrayAdapter;

029import android.widget.Button;

030import android.widget.ListView;

031 

032import java.util.ArrayList;

033import java.util.List;

034 

035/**

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

037*/

038public class VoiceRecognition extends Activity implements OnClickListener {

039 

040private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;

041 

042private ListView mList;

043 

044/**

045* Called with the activity is first created.

046*/

047@Override

048public void onCreate(Bundle savedInstanceState) {

049super.onCreate(savedInstanceState);

050 

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

052setContentView(R.layout.voice_recognition);

053 

054// Get display items for later interaction

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

056 

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

058 

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

060PackageManager pm = getPackageManager();

061List activities = pm.queryIntentActivities(

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

063if (activities.size() != 0) {

064speakButton.setOnClickListener(this);

065} else {

066speakButton.setEnabled(false);

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

068}

069}

070 

071/**

072* Handle the click on the start recognition button.

073*/

074public void onClick(View v) {

075if (v.getId() == R.id.btn_speak) {

076startVoiceRecognitionActivity();

077}

078}

079 

080/**

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

082*/

083private void startVoiceRecognitionActivity() {

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

085intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

086RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

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

088startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);

089}

090 

091/**

092* Handle the results from the recognition activity.

093*/

094@Override

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

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

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

098ArrayList matches = data.getStringArrayListExtra(

099RecognizerIntent.EXTRA_RESULTS);

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

101matches));

102}

103 

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

105}

106}