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：
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：
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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* Copyright (C) 2008 The Android Open Source Project
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* |
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and
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* limitations under the License. |
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*/ |
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package com.example.android.apis.app;
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import com.example.android.apis.R;
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import android.app.Activity;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.os.Bundle;
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import android.speech.RecognizerIntent;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.ArrayAdapter;
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import android.widget.Button;
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import android.widget.ListView;
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import java.util.ArrayList;
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import java.util.List;
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/** |
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* Sample code that invokes the speech recognition intent API. |
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*/ |
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public class VoiceRecognition extends Activity implements OnClickListener {
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private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;
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private ListView mList;
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/** |
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* Called with the activity is first created. |
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*/ |
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@Override |
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// Inflate our UI from its XML layout description. |
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setContentView(R.layout.voice_recognition); |
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// Get display items for later interaction |
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Button speakButton = (Button) findViewById(R.id.btn_speak); |
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mList = (ListView) findViewById(R.id.list); |
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// Check to see if a recognition activity is present |
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PackageManager pm = getPackageManager(); |
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List activities = pm.queryIntentActivities( |
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new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
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if (activities.size() != 0) {
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speakButton.setOnClickListener(this);
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} else {
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speakButton.setEnabled(false);
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speakButton.setText("Recognizer not present");
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} |
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} |
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/** |
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* Handle the click on the start recognition button. |
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*/ |
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public void onClick(View v) {
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if (v.getId() == R.id.btn_speak) {
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startVoiceRecognitionActivity(); |
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} |
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} |
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/** |
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* Fire an intent to start the speech recognition activity. |
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*/ |
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private void startVoiceRecognitionActivity() {
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Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
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intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, |
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RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); |
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intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speech recognition demo");
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startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE); |
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} |
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/** |
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* Handle the results from the recognition activity. |
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*/ |
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@Override |
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
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// Fill the list view with the strings the recognizer thought it could have heard |
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ArrayList matches = data.getStringArrayListExtra( |
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RecognizerIntent.EXTRA_RESULTS); |
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mList.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1,
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matches)); |
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} |
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super.onActivityResult(requestCode, resultCode, data);
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} |
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} |