android语音网络搜索

来源：互联网发布：长沙软件工业园编辑：程序博客网时间：2024/05/03 20:30

这是一个很简单的语音搜索Demo，要使用语音搜索，前提是必须安装Google Voice Search Engine，以下是主要代码：

package com.mjl.speechsearch;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.SearchManager;
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.Button;
import android.widget.Toast;

public class Main extends Activity {
    /** Called when the activity is first created. */
private Button button = null;
public static final int voice = 0x1008;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        button = (Button)findViewById(R.id.button);

        button.setOnClickListener(new OnClickListener() {

   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    PackageManager pm = getPackageManager();
    //查询有无安装Google Voice Search Engine
    List<ResolveInfo> activities = pm.queryIntentActivities(new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH), 0);
    //若有安装Google Voice Search Engine
    if(activities.size()!=0){
     Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
     intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
     intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "语音识别");
     startActivityForResult(intent, voice);
    }else{
     Toast.makeText(Main.this, "没有安装 Google Search Engine", Toast.LENGTH_LONG).show();
    }
   }
  });
    }

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  // TODO Auto-generated method stub
  switch(requestCode){
  case voice:
   if(requestCode == voice&&resultCode == RESULT_OK){
    String strRet = "";
    //取得识别结果
    ArrayList<String>results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
    for(int i = 0; i<results.size(); i++){
     strRet += results.get(i);
    }
    if(strRet.length()>0){
     Toast.makeText(Main.this, strRet, Toast.LENGTH_LONG).show();
     Intent search = new Intent(Intent.ACTION_WEB_SEARCH);
     search.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     search.putExtra(SearchManager.QUERY, strRet);
     final Bundle appData = getIntent().getBundleExtra(SearchManager.APP_DATA);
     if(appData != null){
      search.putExtra(SearchManager.APP_DATA, appData);
     }
     startActivity(search);
    }else{
     Toast.makeText(Main.this, "Can not recoginze...", Toast.LENGTH_LONG).show();
    }
   }
   break;
  }
  super.onActivityResult(requestCode, resultCode, data);
}

}