我目前正在使用Flashbuilder 4.6创建移动应用程序,我希望根据用户选择的菜单项将用户推送到视图。我的代码显示了我如何尝试将字符串从选定的列表项转换为类对象,然后将其传递给pushView的参数:
<fx:Script>
<![CDATA[
import mx.collections.*;
import spark.components.SplitViewNavigator;
import spark.components.ViewNavigator;
import spark.events.IndexChangeEvent;
import spark.events.ViewNavigatorEvent;
import spark.managers.PersistenceManager;
import spark.skins.mobile.SplitViewNavigatorSkin;
public var menuAC:ArrayCollection;
public var j_array:Array = [{label:"Home", data:"NLView"},
{label:"All Jobs", data:"JList"},
{label:"Company Profiles", data:"SView"},
{label:"Search By Sector", data:"JView"}];
protected function list_changeHandler(event:IndexChangeEvent):void
{
var selectedItem:String = new String(list.selectedItem.data);
//trace("Selected Item = " + selectedItem);
var splitNavigator:SplitViewNavigator = navigator.parentNavigator as SplitViewNavigator;
var detailNavigator:ViewNavigator = splitNavigator.getViewNavigatorAt(0) as ViewNavigator;
splitNavigator.hideViewNavigatorPopUp();
if(list.selectedItem.data == "NewListView")
{
var myClass:Class = getDefinitionByName(selectedItem) as Class;
trace("View Class = " + myClass);
detailNavigator.pushView(myClass);
}
else if(list.selectedItem.data)
{
}
}
protected function view1_viewActivateHandler(event:ViewNavigatorEvent):void
{
if(data.view == "JSFilt")
{
menuAC = new ArrayCollection(j_array);
}
list.dataProvider = menuAC;
// TODO Auto-generated method stub
var splitNavigator:SplitViewNavigator = navigator.parentNavigator as SplitViewNavigator;
var detailNavigator:ViewNavigator = splitNavigator.getViewNavigatorAt(1) as ViewNavigator;
splitNavigator.hideViewNavigatorPopUp();
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:BitmapImage width="100%" height="100%" source="@Embed('assets/images/sidebg.png')" fillMode="repeat"/>
<s:BitmapImage horizontalCenter="0" top="5" width="175" height="130" source="@Embed('assets/images/G_S_Logo_170x130.png')"/>
<s:List id="list" left="0" right="0"
color="0xFFFFFF" contentBackgroundColor="0x101010"
fontSize="20" width="280"
alternatingItemColors="[0x202020,0x2a2a2a]"
top="140" horizontalCenter="0" bottom="200"
downColor="0x70B2EE"
selectionColor="0x70B2EE"
change="list_changeHandler(event)">
<s:itemRenderer>
<fx:Component>
<s:IconItemRenderer messageStyleName="myFontStyle" fontSize="22" height="70"
labelField="label"
messageField=""
/>
</fx:Component>
</s:itemRenderer>
</s:List>
我也尝试过使用以下命令,该命令也不起作用:
var viewClass:Class = Class(getDefinitionByName(getQualifiedClassName(selectedItem)));
有没有人知道如何查看列表中选择的值然后使用该字符串名称将app推送到视图,因为pushView方法不接受字符串??
感谢您的建议,我喜欢将类添加到数组然后将其传递给pushView的想法。我过去曾经尝试过,但它没有用,所以我用下面的代码尝试了你的方法:
public var jobs_array:Array = [{label:"Home", data:"NewListView", class:NewListView},
{label:"All", data:"JList"},
{label:"C Prof's", data:"SView"},
{label:"S By S", data:"JSView"}];
正如您所看到的,我已尝试在第一行实施您的建议,但我收到以下错误:
1084: Syntax error: expecting colon before rightbrace.
1084: Syntax error: expecting identifier before class.
1084: Syntax error: expecting identifier before rightbrace.
这必须是一个简单的语法,但我无法看到它,有人可以帮助我吗?
答案 0 :(得分:2)
var imageClass:Class=getDefinitionByName("com.robaldred.composers."+imgclass) as Class;
请添加包名称:com.robaldred.composers.
答案 1 :(得分:0)
getDefinitionByName(selectedItem)
几乎就是你想要的,但并不完全。请注意,selectedItem
是您的数组中的一项,例如{label:"All Jobs", data:"JList"}
,而不仅仅是"JList"
。
getDefinitionByName(getQualifiedClassName(selectedItem))
绝对不是您想要的,因为getQualifiedClassName
将返回selectedItem
的完全限定类名。在这种情况下,那将是Object
。然后getDefinitionByName
将返回Object类。
getDefinitionByName(selectedItem.data)
应该对你有用。例如,selectedItem.data
应该是JList
,然后getDefinitionByName
应该返回JList Class对象。
答案 2 :(得分:0)
为什么不直接在数据中引用Class本身,不要担心使用String来表示它。
您的数据项如下所示:
var data:Array = [
{ label: "Item 1", class: ClassToUseForItem1 },
{ label: "Item 2", class: ClassToUseForItem2 },
{ label: "Item 3", class: ClassToUseForItem3 } ];
现在你可以做pushView(list.selectedItem.class)
答案 3 :(得分:0)
是..这是使用字符串绑定spark viewstack slelected child的答案 var str:String =“roof”; viewstack.selectedChild = NavigatorContent(viewstack.getChildByName(STR));