实现的功能:
在输入框中输入你要找的城市(city)名,点击Search City按钮,然后调用了searchCity()进行搜索并自动滚屏到匹配项
<?xml version="1.0" encoding="utf-8"?>
<!--搜索定位,编辑单元格功能-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" creationComplete="http_test.send();">
<mx:HTTPService id="http_test"
url="/flex_xml/date.xml"
result="onResult();">
</mx:HTTPService>
<mx:Script>
<![CDATA[
import mx.controls.Button;
import mx.collections.SortField;
import mx.collections.ArrayCollection;
import mx.collections.Sort;
import mx.collections.IViewCursor;
[Bindable]
var datas:ArrayCollection;
var cursor:IViewCursor;
private function onResult():void{
var sort:Sort=new Sort();
sort.fields=[new SortField("city",true)];
this.datas=http_test.lastResult.blog.channel.item;
this.datas.sort=sort;
this.datas.refresh();
this.cursor=this.datas.createCursor();
}
private function searchCity():void{
if(search_city.text!=""){
if(this.cursor.findFirst({city:search_city.text})){
var idx:int=this.datas.getItemIndex(this.cursor.current);
this.http_dataGird.scrollToIndex(idx);
this.http_dataGird.selectedItem=this.cursor.current;
}
}
}
]]>
</mx:Script>
<mx:Panel title="{http_test.lastResult.blog.channel.title}" width="90%" height="90%">
<mx:Form>
<mx:FormItem label="Search">
<mx:TextInput id="search_city"/>
</mx:FormItem>
<mx:FormItem>
<mx:Button label="Search City" click="searchCity()"/>
</mx:FormItem>
</mx:Form>
<mx:DataGrid id="http_dataGird" dataProvider="{datas}" editable="true" width="100%" height="50%">
<mx:columns>
<mx:DataGridColumn headerText="标题" dataField="title"/>
<mx:DataGridColumn headerText="作者" dataField="author"/>
<mx:DataGridColumn headerText="类型" dataField="category"/>
<mx:DataGridColumn headerText="城市" dataField="city"/>
</mx:columns>
</mx:DataGrid>
</mx:Panel>
</mx:Application>
本文展示了一个通过用户输入城市名称并自动滚动到匹配项的应用,应用从远程服务器获取数据并进行筛选,突出展示了信息技术在搜索和数据处理方面的强大能力。
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