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Cana — Thu, 08 Sep 2011 02:47:00 GMT

思�\
1、选中行作��Z��个对象，可通过遍历对象获取属性和��g��存到剪脓(chu��ng)�ѝ�?br />

public function copyToClip(evt:MouseEvent):void
            {

                var selectedItem:Object =  docus.selectedItem;

                if(null == selectedItem)
                {

                    Alert.show("请选择要复制的单据","提示");

                    return;

                }

                var objInfo:Object = ObjectUtil.getClassInfo(selectedItem);
                var fieldName:Array = objInfo['properties'] as Array;
                var name:String = "";
                var value:String = "";

                for each(var q:QName in fieldName)
                {
                    if(!(q.localName == "mx_internal_uid"))
                    {
                        value += (selectedItem[q.localName] + ",");

                        name += (q.localName + ",");
                    }
                }


                name = name.substring(0,name.length-1);
                value = value.substring(0,value.length-1);

                System.setClipboard(name+"\n"+value);

                Alert.show("单据已复�?,"提示");


            }

Cana 2011-09-08 10:47 发表评论

Cana — Mon, 05 Sep 2011 10:14:00 GMT

1、通过阅读api有个初步解决�Ҏ(gu��)��Q�通过监听虚拟键盘昄��和隐藏事件来控制�E�序的显�C�Z��|�，通过不同的输入框来监听键盘事件调整程序位�|�到输入框的位置�Q?br /> 在手机应用程序中支持屏幕键盘

2、不同的输入框来监听键盘昄��事�g

/**
*打开键盘之前 softKeyboardActivating
*打开键盘之后softKeyboardActivate
*关闭键盘之后softKeyboardDeactivate
                    */

login_id.addEventListener(SoftKeyboardEvent.SOFT_KEYBOARD_ACTIVATE,onBefore); //用户�?nbsp;
                login_password.addEventListener(SoftKeyboardEvent.SOFT_KEYBOARD_ACTIVATE,onBefore); //密码

                this.addEventListener(SoftKeyboardEvent.SOFT_KEYBOARD_DEACTIVATE,onAfter); //应用�E�序监听键盘隐藏事�g�Q�复�?/span>

3、相应的控制函数

            public function onBefore(evt:SoftKeyboardEvent):void
            {

                var tx:TextInput = evt.currentTarget as TextInput; //输入框的位置Y

                olderY = int(this.y); //应用�E�序的原始位�|?br />
                this.y = -(tx.y-20); //�U�d��E�序位置到输入框的大致位�|?br />
            }


            public function onAfter(evt:SoftKeyboardEvent):void
            {

                this.y = olderY; //键盘隐藏时复位程�?br />            }

Cana 2011-09-05 18:14 发表评论

Cana — Tue, 23 Aug 2011 02:53:00 GMT

转自�Q?a >http://blog.csdn.net/bincavin/article/details/5600294

所有Event对象都有target和currentTarget属性，target属性可引用事�g分派对象�Q?span style="background-color: #99cc00; ">currentTarget属性可引用正在被检��事件监听器的当前节炏V�?br />
在事件将在控仉��中向上冒泡，在此�q�程�?span style="background-color: #99cc00; ">target始终不变�Q?/span>currentTarget在每个向上移动的�q�程中及时改变�?br />
例如当用��L��M��个Button控�g�Q�很可能事�g�z�֏�者是Button的内部子�l��gUITextField�Q�事件向上冒泡过�E�中target始终�?UITextField不变�Q�但currentTarget会逐步冒��到Button�l��g�Q�这�Ӟ��触发了在Button上监听的Click事�g处理函数�?br />

Cana 2011-08-23 10:53 发表评论

Cana — Thu, 18 Aug 2011 04:29:00 GMT

delete _menu.FoodCounts; //删除_menu的FoodCounts属�?br /> delete _menu.Money; //删除_menu的Money属�?br />

Cana 2011-08-18 12:29 发表评论

Cana — Thu, 18 Aug 2011 03:11:00 GMT

//_menu 为遍历对�?
            var objInfo:Object = ObjectUtil.getClassInfo(_menu);
            var fieldName:Array = objInfo["properties"] as Array;
            for each(var q:QName in fieldName){
                //q 属性名�U�ͼ�value 对应的�?nbsp;
                var value:String = _menu[q.localName] as String;
                trace(q+" "+value);
            }

Cana 2011-08-18 11:11 发表评论

flex Renderer中获取父对象

Cana — Tue, 09 Aug 2011 09:41:00 GMT

要在渲染器中获得其父对象�Q�通过实现IDropInListItemRenderer实现(以DataGrid��Z��)

1、在渲染器中实现IDropInListItemRenderer接口

xml version="1.0" encoding="utf-8"?>
<s:MXDataGridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
                          xmlns:s="library://ns.adobe.com/flex/spark"
                          xmlns:mx="library://ns.adobe.com/flex/mx"
                          focusEnabled="true"
                          implements="mx.controls.listClasses.IDropInListItemRenderer">

s:MXDataGridItemRenderer>

2、实现接口的�Ҏ(gu��)��Q�通过此获得父对象

            private var _listData:BaseListData;
            private var _owner:DataGrid = null; //父对�?br />             [Bindable("dataChange")]
            override public function get listData():BaseListData { return _listData; }

            override public function set listData(value:BaseListData):void {
                _listData = value;

                _owner = value.owner as DataGrid;
            }

3、在此基��上可以取得最��层文档对象(文档对象是位�?Flex 应用�E�序、MXML �l��g�?AS �l��g层次�l�构��层�?UIComponent)

(_owner as DataGrid).parentDocument //通过转型得到惌��的对�?/span>

Cana 2011-08-09 17:41 发表评论

Flex 的getChildren()�Ҏ(gu��)��

Cana — Fri, 05 Aug 2011 07:00:00 GMT

flex Container �cȝ��getChildren�Ҏ(gu��)��只能得到调用对象的子对象
例如flex�l�构

  <mx:VBox id="uploadbox">
         <mx:HBox id="file1" paddingTop="10">
                <mx:ProgressBar id="bar1" visible="true"
                    labelPlacement="center"
                    minimum="0" maximum="100"
                    label="当前�q�度: 0%"
                    direction="right"
                    mode="manual" width="308"  height="27" />
                   <mx:Button label="上传" height="27"  click="upload(event);" x="320" y="10"/>
        mx:HBox>
...... // 此处省略若干HBox
    mx:VBox>

代码�E�序

      var hboxChild:Array = uploadbox.getChildren();

                for(var i:int=0;i<hboxChild.length;i++)
                {
                    trace("hboxChild.name= "+(hboxChild[i] as DisplayObject).name);
                }

�l�果如下

hboxChild.name= file1 //如果没有讄��name属性，则name = id
hboxChild.name= hb_5
hboxChild.name= hb_6
hboxChild.name= hb_7
hboxChild.name= hb_8
hboxChild.name= hb_9

Cana 2011-08-05 15:00 发表评论

Cana — Thu, 14 Jul 2011 04:41:00 GMT

当程序手动改变selectedIndex或selectedItem的值时List控�g的change事�g不会触发�Q�这时可以重新分发change事�g�?/p>

/**
 * sounds为List控�gid 
 */
sounds.selectedIndex = 0;  //改变selectedIndex
sounds.dispatchEvent(new ListEvent(ListEvent.CHANGE)); //分发change事�g

Cana 2011-07-14 12:41 发表评论