手机上使用google 搜索引擎[通俗易懂]

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.android.antking.search"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".SearchActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <--!这里加上-->
            <intent-filter>
            <action android:name="android.intent.action.WEB_SEARCH"></action>
            </intent-filter>
            <meta-data
              android:name="android.app.searchable"
               android:resource="@xml/searchable"/>
        </activity>

    </application>
    <--!这里加上-->
     <meta-date android:name="android.app.default_searchable"
                android:value=".SearchActivity"/>
</manifest>

import android.app.Activity;
import android.app.SearchManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class SearchActivity extends Activity {
	//定义私有整形变量
	private final int MENU =1;
	//声明Intent对象
	private Intent intent;
	//定义键盘模式为按键搜索模式
	private final int KeyMode =Activity.DEFAULT_KEYS_SEARCH_LOCAL;
	//使用Android自定义图标
	private final int icon = android.R.drawable.ic_menu_search;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        try{
        	setContentView(R.layout.main);
        	//设置键盘模式，按键盘弹出搜索狂
        	setDefaultKeyMode(KeyMode);
        	//获取intent 
        	intent = getIntent();
        	searchWeb(intent);
        }catch(Exception e){
        	Toast.makeText(SearchActivity.this, "一场错误"+e.toString(),
        			Toast.LENGTH_SHORT).show();
        }
        
    }
    /*searchWeb 根据意图行为为键盘算是否进行Web搜索*/
    private void searchWeb(Intent intent){
    	//获取意图的行为
    	String action = intent.getAction();
    	//若意图的行为是Web搜索，则搜索
    	if(Intent.ACTION_WEB_SEARCH.equals(action)){
    		searchHandle(intent);
    	}
    }
    protected void onNewIntent(Intent intent){
    	setIntent(intent);
    	searchWeb(intent);
    }
    /*searchHandle()获取SearchManager的查询*/
    private void searchHandle(Intent intent){
    	final String query = intent.getStringExtra(SearchManager.QUERY);
    	Toast.makeText(this, query, Toast.LENGTH_SHORT).show();
    }
    public boolean onCreateOptionsMenu(Menu menu){
    	boolean result = super.onCreateOptionsMenu(menu);
    	//添加菜单选项
    	MenuItem menuItem = menu.add(0,MENU,0,"nihao");
    	//设置图标
    	menuItem.setIcon(icon);
    	
		return result;
    	
    }
    public boolean onMenuItemSelected(int featureId,MenuItem item){
		switch(item.getItemId()){
		case MENU:
			onSearchRequested();
			return true;
		default:
			return super.onMenuItemSelected(featureId, item);
		}
		
    	
    	
    }
}