利用searchview搜索应用程序

package com.example.excerciseforsearchview; 
 
import java.util.List; 
 
import android.os.Bundle; 
import android.app.Activity; 
import android.app.SearchManager; 
import android.app.SearchableInfo; 
import android.content.Context; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.SearchView; 
import android.widget.TextView; 
import android.widget.Toast; 
 
public class MainActivity extends Activity implements SearchView.OnQueryTextListener{ 
    TextView textView; 
    private SearchView searchView; 
    private SearchableInfo searchableInfo; 
    private SearchableInfo shInfo; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
        textView=(TextView) findViewById(R.id.text); 
    } 
     
     
 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
        // Inflate the menu; this adds items to the action bar if it is present. 
        getMenuInflater().inflate(R.menu.main, menu); 
        MenuItem menuItem=menu.findItem(R.id.action_settings); 
        //下面一行代码的作用是Returns the currently set action view for this menu item. 
        //要使用menuItem的getActionView方法需在设置menu的xml文件item里添加  
        //android:actionViewClass="android.widget.SearchView" 
        searchView=(SearchView) menuItem.getActionView(); 
        searchView.setOnQueryTextListener(this); 
        searchAppInfo(); 
        return true; 
    } 
 
    private void searchAppInfo() { 
        // TODO Auto-generated method stub 
        SearchManager searchManager=(SearchManager) getSystemService(Context.SEARCH_SERVICE); 
        if (searchManager!=null) { 
            //Returns a list of the searchable activities that can be included in global search. 
            //把所有可以被搜索到的Searchable activities列出 
            List<SearchableInfo> searchableInfos=searchManager.getSearchablesInGlobalSearch(); 
            //Gets information about a searchable activity 
            //根据ComponentName得到具体搜到的searchableInfo 
            searchableInfo=searchManager.getSearchableInfo(getComponentName()); 
            for (SearchableInfo sInfo:searchableInfos) { 
                if (sInfo.getSuggestAuthority()!=null&&sInfo.getSuggestAuthority().startsWith("application")) { 
                    searchableInfo=sInfo; 
                } 
            } 
             
        } 
        //Sets the SearchableInfo for this SearchView. 
        //Properties in the SearchableInfo are used to display 
        //labels, hints, suggestions, create intents 
        //for launching search results screens and controlling other affordances such as a voice button. 
        searchView.setSearchableInfo(searchableInfo); 
         
         
    } 
 
    @Override 
    public boolean onQueryTextChange(String newText) { 
        // TODO Auto-generated method stub 
        return false; 
    } 
 
    @Override 
    public boolean onQueryTextSubmit(String query) { 
        // TODO Auto-generated method stub 
        textView.append(query); 
        return false; 
    } 
 
}