ActionBarSherlock的学习笔记（四） ------------ ActionBarSherlock中的搜索及SearchView的使用

在使用ActionBarSherlock定义app的头部操作时，会经常看见搜索的动作，本文主要介绍一下搜索是如何实现的。

 

1. SearchView 

是搜索的核心组件，具体介绍请参考Android官方说明文档： http://developer.android.com/reference/android/widget/SearchView.html

XML属性

 

属性名称	描述
android:iconifiedByDefault	设置SearchView的默认状态。 如果为true，在没有被使用和点击展开时它将被图形化。
android:maxWidth	SearchView的可选择的最大宽度
android:queryHint	当查询条件为空时显示的一个提示字符串。

 

重要的接口

 

名称	作用
interface          SearchView.OnCloseListener	当用户关闭SearchView时触发的回调函数
interface          SearchView.OnQueryTextListener	当查询文本改变时的回调函数。
interface          SearchView.OnSuggestionListener	在建议上选择事件时的回调接口。

 

demo的核心代码

package com.hsx.wangcuo;



import android.app.SearchManager;

import android.database.Cursor;

import android.database.MatrixCursor;

import android.os.Bundle;

import android.provider.BaseColumns;

import android.view.LayoutInflater;

import android.view.View;

import com.actionbarsherlock.app.SherlockActivity;

import com.actionbarsherlock.view.MenuItem;

import com.actionbarsherlock.view.SubMenu;

import com.actionbarsherlock.widget.SearchView;

import com.hsx.wangcuo.adapter.QuerySuggestionsAdapter;

import com.hsx.wangcuo.util.ToastUtil;



public class MainActivity extends SherlockActivity implements SearchView.OnSuggestionListener, SearchView.OnQueryTextListener {

    private static final String[] COLUMNS = { BaseColumns._ID, SearchManager.SUGGEST_COLUMN_TEXT_1, };



    private QuerySuggestionsAdapter mSuggestionsAdapter;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        initActionBarTitle();

    }



    private void initActionBarTitle() {

        // 可以自定义actionbar

        getSupportActionBar().setDisplayShowCustomEnabled(true);

        getSupportActionBar().setDisplayShowTitleEnabled(false);

        // 不在actionbar显示logo

        getSupportActionBar().setDisplayShowHomeEnabled(false);

        View mainActionBarView = LayoutInflater.from(this).inflate(R.layout.main_action_bar, null);

        getSupportActionBar().setCustomView(mainActionBarView);

    }



    @Override

    public boolean onCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) {



        createSearchItem(menu);



        /*************************************************/



        MenuItem share = menu.add(0, 1, 2, "share");

        share.setIcon(R.drawable.abs__ic_menu_share_holo_dark);

        share.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);



        /***************************************************/

        SubMenu addMenu = menu.addSubMenu(0, 2, 3, "overflow");

        addMenu.add(0, 3, 0, "更换主题");

        addMenu.add(0, 4, 0, "系统设置");

        addMenu.add(0, 5, 0, "修改密码");

        addMenu.add(0, 6, 0, "更换头像");



        MenuItem overFlowItem = addMenu.getItem();

        overFlowItem.setIcon(R.drawable.abs__ic_menu_moreoverflow_holo_dark);

        overFlowItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);



        return super.onCreateOptionsMenu(menu);

    }



    /**

     * Create the search view(搜索的核心代码)

     * 

     * @param menu

     * @return void

     * @author hsx

     * @time 2014-3-16下午03:48:01

     */

    private void createSearchItem(com.actionbarsherlock.view.Menu menu) {



        SearchView searchView = new SearchView(getSupportActionBar().getThemedContext());

        searchView.setQueryHint("Search for countries…");

        searchView.setOnQueryTextListener(this);

        searchView.setOnSuggestionListener(this);



        if (mSuggestionsAdapter == null) {

            MatrixCursor cursor = new MatrixCursor(COLUMNS);

            cursor.addRow(new String[] { "1", "'Murica" });

            cursor.addRow(new String[] { "2", "Canada" });

            cursor.addRow(new String[] { "3", "Denmark" });

            mSuggestionsAdapter = new QuerySuggestionsAdapter(getSupportActionBar().getThemedContext(), cursor);

        }



        searchView.setSuggestionsAdapter(mSuggestionsAdapter);



        MenuItem searchItem = menu.add(0, 0, 0, "search");

        searchItem.setIcon(R.drawable.abs__ic_search);

        searchItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);

        searchItem.setActionView(searchView);

    }



    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()) {

        case 1:

            ToastUtil.showShortToast(MainActivity.this, "分享");

            break;

        case 3:

            ToastUtil.showShortToast(MainActivity.this, "更换主题");

            break;

        case 4:

            ToastUtil.showShortToast(MainActivity.this, "系统设置");

            break;

        case 5:

            ToastUtil.showShortToast(MainActivity.this, "修改密码");

            break;

        case 6:

            ToastUtil.showShortToast(MainActivity.this, "更换头像");

            break;

        }

        return super.onOptionsItemSelected(item);

    }



    /***

     * implements SearchView.OnQueryTextListener

     */

    @Override

    public boolean onQueryTextSubmit(String query) {

        ToastUtil.showShortToast(this, "You searched for: " + query);

        return true;

    }



    /***

     * implements SearchView.OnQueryTextListener

     */

    @Override

    public boolean onQueryTextChange(String newText) {

        return false;

    }



    /**

     * implements SearchView.OnSuggestionListener

     */

    @Override

    public boolean onSuggestionSelect(int position) {

        return false;

    }



    /**

     * implements SearchView.OnSuggestionListener

     */

    @Override

    public boolean onSuggestionClick(int position) {

        Cursor c = (Cursor) mSuggestionsAdapter.getItem(position);

        String query = c.getString(c.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1));

        ToastUtil.showShortToast(this, "Suggestion clicked: " + query);

        return true;

    }



}

/*******************************************************************************************************************************/

QuerySuggestionsAdapter

 

package com.hsx.wangcuo.adapter;



import android.app.SearchManager;

import android.content.Context;

import android.database.Cursor;

import android.support.v4.widget.CursorAdapter;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;



public class QuerySuggestionsAdapter extends CursorAdapter {



    public QuerySuggestionsAdapter(Context context, Cursor c) {

        super(context, c, 0);

    }



    @Override

    public View newView(Context context, Cursor cursor, ViewGroup parent) {

        LayoutInflater inflater = LayoutInflater.from(context);

        View v = inflater.inflate(android.R.layout.simple_list_item_1, parent, false);



        return v;

    }



    @Override

    public void bindView(View view, Context context, Cursor cursor) {

        TextView tv = (TextView) view;

        final int textIndex = cursor.getColumnIndex(SearchManager.SUGGEST_COLUMN_TEXT_1);

        tv.setText(cursor.getString(textIndex));

    }

}

 

效果图如下：

 

还有一个小的bug，没有找到解决方法：输入一个字母的时候，不弹出提示

 

 

demo的地址 :   http://download.csdn.net/detail/abc13939746593/7061035