Flex學習筆記（Day 1）

StringValidator 字串驗證
PhoneNumberValidator 電話號碼驗證
DateValidator 日期驗證
EmailValidator 郵箱驗證
NumberValidator 數字驗證

Alert
引入命名空間
import mx.controls.Alert;
import mx.events.CloseEvent;
Alert.okLabel = "確定";
Alert.show("程式正在運行!\n小心","注意",Alert.OK);

YES|NO|OK|CANCEL  1|2|4|8 如果有多個的話，可以使用相加後的值
如果要顯示YES+NO的話，使用3即可

Alert.show("確定儲存嗎？","儲存",3,this,alertok);
protected function alertok(event:CloseEvent):void
{
    if(event.detail==Alert.YES)
    {
        lblMsg.text = "YES";
    }
    else
    {
        lblMsg.text = "NO";
    }
}

Alt+/ 強制提示引入命名空間問題

monthNames='["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"]'

dayNames='["周一","周二","周三","周四","周五","周六","周日"]'

formatString = "YYYY-MM-DD"

TextInput控制項
為s:Application添加creationComplete="init()"

protected function init():void
{
   input.addEventListener(KeyboardEvent.KEY_DOWN,enter);
}
protected function enter(e:KeyboardEvent):void
{
   if(e.KeyCode==13)
   {
       Alert.show("按下斷行符號鍵","注意",Alert.OK);
   }
}
或者在TextInput控制項的KeyDown="enter(event)"

DataGrid控制項

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<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"               xmlns:s="library://ns.adobe.com/flex/spark"               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="Application1_CreationCompletedHandler(event)">        <fx:Script>        <![CDATA[            import mx.collections.ArrayCollection;            import mx.collections.IList;            import mx.containers.Grid;            import mx.controls.Alert;            import mx.events.CalendarLayoutChangeEvent;            import mx.events.CloseEvent;            import mx.events.FlexEvent;                        import spark.events.IndexChangeEvent;                        [Bindable]            protected var province:ArrayCollection = new ArrayCollection(                [{label:"安徽",data:1},{label:"江蘇",data:2},{label:"浙江",data:3}]            );                        [Bindable]            protected var country:ArrayCollection = new ArrayCollection(                [{label:"第一組",children:province}]            );                        protected var dgCollection:ArrayCollection = new ArrayCollection();                        protected function btn_clickHandler(event:MouseEvent):void            {                // TODO Auto-generated method stub                Alert.yesLabel="確定";                Alert.noLabel = "取消";                Alert.show("確定儲存嗎？","儲存",3,this,alertok);            }                        protected function Application1_CreationCompletedHandler(event:FlexEvent):void            {                dgCollection.addItem({xm:"張三",nl:25,xl:"本科"});                dgCollection.addItem({xm:"李四",nl:25,xl:"大專"});                dgCollection.addItem({xm:"王五",nl:25,xl:"碩士"});                dgCollection.addItem({xm:"餘六",nl:25,xl:"博士"});                dg.dataProvider = dgCollection;            }                        protected function alertok(event:CloseEvent):void            {                if(event.detail==Alert.YES)                {                    lblMsg.text = "YES";                }                else                {                    lblMsg.text = "NO";                }            }                        protected function cb_changeHandler(event:IndexChangeEvent):void            {                // TODO Auto-generated method stub                this.lblMsg.text ="ComboBox選中的文本是:"+cb.selectedItem.label+",值為："+cb.selectedItem.data;            }                        protected function btnAdd_clickHandler(event:MouseEvent):void            {                // TODO Auto-generated method stub                province.addItem({label:"海南",data:4});            }                        protected function btnDelete_clickHandler(event:MouseEvent):void            {                // TODO Auto-generated method stub                province.removeItemAt(list.selectedIndex);            }                        protected function df_changeHandler(event:CalendarLayoutChangeEvent):void            {                // TODO Auto-generated method stub                this.lblMsg.text = df.selectedDate.fullYear+"年"+(df.selectedDate.month+1)+"月"+df.selectedDate.date+"日";            }                        protected function button1_clickHandler(event:MouseEvent):void            {                //為DataGrid控制項添加資料                dgCollection.addItem({xm:"田七",nl:28,xl:"本科"});                            }                        protected function button2_clickHandler(event:MouseEvent):void            {                //為DataGrid控制項刪除資料                dgCollection.removeItemAt(dg.selectedIndex);            }                        protected function button3_clickHandler(event:MouseEvent):void            {                //為DataGrid控制項添加列                var newGrid:GridColumn = new GridColumn();                newGrid.dataField = "hyzk";                newGrid.headerText="婚姻狀況";                var cols:IList = dg.columns;                cols.addItem(newGrid);            }                        protected function button4_clickHandler(event:MouseEvent):void            {                //為DataGrid控制項刪除列                var cols:IList = dg.columns;                cols.removeItemAt(3);            }                        protected function button5_clickHandler(event:MouseEvent):void            {                // 遍曆DataGrid                for(var i:int=0;i<dgCollection.length;i++)                {                    ta.text =ta.text+dgCollection[i].xm+"\n";                }            }                        public var step:int = 10;            protected function button6_clickHandler(event:MouseEvent):void            {                // 捲軸值設定                this.pb.setProgress(step+=10,100);                    if(step<100)                {                    this.pb.label="正在載入..."+(step/100)*100+"%";                }                else if(step==100)                {                    this.pb.label="載入完成";                }            }            //檔案上傳下載進度            public var file:FileReference = new FileReference();            protected function file_progress(e:ProgressEvent):void            {                pbar.label="已上傳"+Math.round(100*e.bytesLoaded/e.bytesTotal)+"%";                pbar.setProgress(Math.round(100*e.bytesLoaded/e.bytesTotal),100);            }                        protected function upload():void            {                if(file.size>0)                {                    file.load();                }            }                        [Bindable]            protected var stateText:String="請選擇要匯入的檔案";            protected override function createChildren():void            {                super.createChildren();                file.addEventListener(Event.SELECT,file_select);                file.addEventListener(Event.COMPLETE,file_complete);                file.addEventListener(ProgressEvent.PROGRESS,file_progress);            }                        protected function file_select(e:Event):void            {                stateText= file.name;            }                        protected function file_complete(e:Event):void            {                var byteArray:ByteArray = new ByteArray();                byteArray=file.data;                byteArray.position = 0;                Alert.show("上傳完畢!","恭喜",Alert.OK);            }                    ]]>    </fx:Script>        <fx:Declarations>        <!-- 將非可視元素（例如服務、值對象）放在此處 -->        <mx:StringValidator source="{xm}" property="text" maxLength="4" minLength="2" tooLongError="姓名太長" tooShortError="姓名太短">        </mx:StringValidator>        <s:NumberValidator source="{nl}" property="text" minValue="0" maxValue="120" >        </s:NumberValidator>    </fx:Declarations>    <s:Form x="361" y="7" width="300" height="165">        <s:FormItem label="姓名：">            <s:TextInput id="xm"/>        </s:FormItem>        <s:FormItem label="年齡：">            <s:TextInput id="nl"/>        </s:FormItem>        <s:FormItem label="郵箱：">            <s:TextInput id="yx"/>        </s:FormItem>    </s:Form>    <s:Button id="btn" x="10" y="6" label="按鈕" click="btn_clickHandler(event)"/>    <s:Label id="lblMsg" x="76" y="186" text="世界你好！" color="{cp.selectedColor}"/>    <s:ComboBox id="cb" x="10" y="35" change="cb_changeHandler(event)" dataProvider="{province}"/>    <s:List id="list" x="6" y="66" width="150" height="77" dataProvider="{province}"></s:List>    <s:Button id="btnDelete" x="86" y="151" label="刪除" click="btnDelete_clickHandler(event)"/>    <s:Button id="btnAdd" x="8" y="151" label="增加" click="btnAdd_clickHandler(event)"/>    <mx:Tree x="8" y="211" width="312" dataProvider="{country}"></mx:Tree>    <mx:ColorPicker id="cp" x="327" y="6"/>    <mx:DateField id="df" x="197" y="7" change="df_changeHandler(event)"                  dayNames="["周日","周一","周二","周三","周四","周五","周六"]"                  formatString="YYYY-MM-DD"                  monthNames="["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"]"/>    <s:DataGrid x="361" id="dg" y="180" width="300" requestedRowCount="4">        <s:columns>            <s:ArrayList>                <s:GridColumn dataField="xm" headerText="姓名"></s:GridColumn>                <s:GridColumn dataField="nl" headerText="年齡"></s:GridColumn>                <s:GridColumn dataField="xl" headerText="學曆"></s:GridColumn>            </s:ArrayList>        </s:columns>    </s:DataGrid>    <s:Button x="382" y="316" label="添加" click="button1_clickHandler(event)"/>    <s:Button x="491" y="317" label="刪除" click="button2_clickHandler(event)"/>    <s:Button x="382" y="367" label="添加列" click="button3_clickHandler(event)"/>    <s:Button x="491" y="367" label="刪除列" click="button4_clickHandler(event)"/>    <s:Button x="10" y="396" label="遍曆DataGrid" click="button5_clickHandler(event)"/>    <s:TextArea id="ta" x="106" y="396" height="20"/>    <mx:ProgressBar id="pb" x="573" y="326" labelPlacement="center" maximum="100" minimum="0" mode="manual"/>    <s:Button x="602" y="353" label="進度" click="button6_clickHandler(event)"/>    <s:Panel x="353" y="396" width="250" height="200" title="資料匯入">        <s:TextInput x="10" y="10" width="157" text="{stateText}"/>        <s:Button x="175" y="11" label="瀏覽" click="file.browse();"/>        <mx:ProgressBar id="pbar" x="10" y="57" width="157" labelPlacement="center"/>        <s:Button x="175" y="57" label="上傳" click="upload();"/>    </s:Panel></s:Application>

頁面效果如下：