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 系統里面植入，并結合google 的云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，借助于云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，并打印在列表上。

　　功能界面如下：

　　用戶通過點擊speak按鈕顯示界面：

　　用戶說完話后，將提交到云端搜索：

　　在云端搜索完成后，返回打印數據：

　　完整代碼如下：

/* 
 * 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<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");
        }
    }

    /**
     * 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<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);
    }
}        

        

        
        
      
        
it知識庫：Android 輕松實現語音識別，轉載需保留來源！
        
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