Android 语音识别+语音搜索源码 Voice Search

1、判断是否已安装语音搜索功能

package com.voice.search;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.os.Environment;
import android.speech.RecognizerIntent;
import android.widget.Toast;

public class VoiceSearchUtil {

	private static Context context;
	private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;

	public static void getVoiceSearch(Context c) {
		context = c;
		PackageManager pm = context.getPackageManager();
		List activities = pm
				.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
		if (activities.size() != 0) {
			/* 设备存在 */
			voiceSearch();
		} else {
			/* 没有设备请点击安装按钮进行安装呢 */
			if (copyApkFromAssets(context, "google_voice_search.apk", Environment.getExternalStorageDirectory()
					.getAbsolutePath() + "/google_voice_search.apk")) {
				new AlertDialog.Builder(context).setMessage("检测到未安装语音搜索设备，是否安装？")
						.setPositiveButton("安装", new android.content.DialogInterface.OnClickListener() {

							@Override
							public void onClick(DialogInterface dialog, int which) {
								Intent intent = new Intent(Intent.ACTION_VIEW);
								intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
								intent.setDataAndType(
										Uri.parse("file://"
											+ Environment.getExternalStorageDirectory().getAbsolutePath()
												+ "/google_voice_search.apk"),
										"application/vnd.android.package-archive");
								context.startActivity(intent);
							}
						}).setNegativeButton("取消", null).show();
			}
		}
	}

	/**
	 * 安装语音搜索功能,写入数据
	 * 
	 * @param context
	 *            上下文
	 * @param fileName
	 *            文件名称
	 * @param path
	 *            文件路径
	 * @return 所需文件
	 */
	public static boolean copyApkFromAssets(Context context, String fileName, String path) {
		boolean copyIsFinish = false;
		try {
			InputStream is = context.getAssets().open(fileName);
			File file = new File(path);
			file.createNewFile();
			FileOutputStream fos = new FileOutputStream(file);
			byte[] temp = new byte[1024];
			int i = 0;
			while ((i = is.read(temp)) > 0) {
				fos.write(temp, 0, i);
			}
			fos.close();
			is.close();
			copyIsFinish = true;
		} catch (IOException e) {
			e.printStackTrace();
		}
		return copyIsFinish;
	}

	// 语音搜索
	private static void voiceSearch() {
		try {
			// 通过Intent传递语音识别的模式，开启语音
			Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
			// 语言模式和自由模式的语音识别
			intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
			// 提示语音开始
			intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "开始语音");
			// 开始语音识别
			((Activity) context).startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
		} catch (Exception e) {
			e.printStackTrace();
			Toast.makeText(context, "找不到语音设备", Toast.LENGTH_LONG).show();
		}
	}

}

2、assets提供语音搜索apk安装

package com.voice.search;

import java.util.ArrayList;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.view.View;
import android.widget.Toast;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;

public class MainActivity extends Activity {

	private static final int VOICE_RECOGNITION_REQUEST_CODE = 1;
	private String[] str;
	private Context context;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		context = this;
	}

	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.search_iv:
			VoiceSearchUtil.getVoiceSearch(context);
			break;
		}
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// 回调获取从谷歌得到的数据
		if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {
			// 取得语音的字符
			ArrayList results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
			// 循环所有结果存入数组
			str = new String[results.size()];
			for (int i = 0; i < results.size(); i++) { // 循环所有结果
				str[i] = results.get(i);
			}
			// Dialog显示
			getSearchDialog();
			// 这里只获取第一条数据
			Toast.makeText(this, results.get(0), Toast.LENGTH_LONG).show();
		}
		super.onActivityResult(requestCode, resultCode, data);
	}

	/***
	 * 搜索后dialog显示结果
	 */
	private void getSearchDialog() {
		Dialog dialog = new AlertDialog.Builder(this).setTitle("你是不是想找：").setIcon(R.drawable.ic_launcher)
				.setItems(str, new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						Toast.makeText(MainActivity.this, str[which], Toast.LENGTH_SHORT).show();
					}
				}).setNegativeButton("取消", null).create();
		dialog.show();
	}

}

3、加入Android读写文件权限

google_voice_search.apk