SearchView--搜索框案例

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页面布局content_main.xml

<? xml version= "1.0" encoding= "utf-8" ?><LinearLayout xmlns: android ="http://schemas.android.com/apk/res/android"    android :layout_width= "match_parent"    android :layout_height= "match_parent"    android :orientation= "vertical">    <!--定义一个SearchVieww-->    <SearchView        android :id= "@+id/searchView"        android :layout_width= "match_parent"        android :layout_height= "wrap_content" />    <ListView        android :id= "@+id/listView"        android :layout_width= "match_parent"        android :layout_height= "0dp"        android :layout_weight= "1"/></LinearLayout>

主程序SearchViewTest

package com.eson.searchview ;import android.os.Bundle ;import android.support.v7.app.AppCompatActivity ;import android.text.TextUtils ;import android.widget.ArrayAdapter ;import android.widget.ListView ;import android.widget.SearchView ;import android.widget.Toast ;public class SearchViewTest extends AppCompatActivity implements SearchView.OnQueryTextListener {    private final String[] mString={ "android" ,"html" , "ios", "java" ,"javaScript" , "css", "node.js" };    private ListView listView ;    private SearchView searchView ;    @Override    protected void onCreate (Bundle savedInstanceState) {        super .onCreate(savedInstanceState) ;        setContentView(R.layout. content_main );        listView = (ListView) findViewById(R.id. listView );        listView .setAdapter( new ArrayAdapter<String>( this, android.R.layout. simple_list_item_1, mString ));        listView .setTextFilterEnabled( true) ;        searchView = (SearchView) findViewById(R.id. searchView );        //设置该SearchView默认是否自动缩小为图标        searchView .setIconifiedByDefault( false) ;        //为该SearchView组件设置事件监听器        searchView .setOnQueryTextListener( this );        //设置该SearchView内默认显示的提示文本        searchView .setQueryHint( "查找" );    }   //用户输入字符激发该方法    @Override    public boolean onQueryTextSubmit (String query) {        //实际应用中应该执行该方法内执行实际查询        //此处仅使用Toast显示用户输入的查询内容        Toast. makeText( this, "您的选择是：" +query, Toast. LENGTH_SHORT).show() ;        return false;    }   //单击搜索按钮时激发该方法    @Override    public boolean onQueryTextChange (String newText) {        if (TextUtils. isEmpty(newText)){            //清除ListView的过滤            listView .clearTextFilter() ;        } else {            //使用用户输入的内容对ListView的列表进行过滤            listView .setFilterText(newText) ;        }        return true;    }}

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