问题
Why TabbedViewNavigatorApplication don’t have popView() (as in ViewNavigatorApplication I can use popView to go previous view)?
How can I do that in TabbedViewNavigatorApplication?
<fx:Script>
<![CDATA[
protected function BackBtn(event:MouseEvent):void{
navigator.popView(); //error
}
]]>
</fx:Script>
<s:ViewNavigator label="Page1" width="100%" height="100%" firstView="views.DurationView" >
<s:titleContent>
<s:Button label="Back" click="BackBtn(event)"/>
</s:titleContent>
</s:ViewNavigator>
<s:ViewNavigator label="Page2" width="100%" height="100%" firstView="views.FrequencyView"/>
</s:TabbedViewNavigatorApplication>
thanks.
回答1:
<?xml version="1.0" encoding="utf-8"?>
<s:TabbedViewNavigatorApplication creationComplete="tabbedviewnavigatorapplication1_creationCompleteHandler(event)"
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
import spark.events.IndexChangeEvent;
private var tabHistory : Array;
private var isLoadingFromHistory : Boolean;
protected function BackBtn(event : MouseEvent) : void
{
isLoadingFromHistory = true;
if (tabHistory.length == 0)
{
trace("You can't go back any further");
tabHistory.push(0);
}
tabbedNavigator.selectedIndex = tabHistory.pop();
}
protected function tabbedviewnavigatorapplication1_creationCompleteHandler(event : FlexEvent) : void
{
tabHistory = [];
tabbedNavigator.addEventListener(IndexChangeEvent.CHANGE, tabsChangedHandler);
}
private function tabsChangedHandler(event : IndexChangeEvent) : void
{
if (isLoadingFromHistory)
{
isLoadingFromHistory = false;
return;
}
tabHistory.push(event.oldIndex);
trace(tabHistory);
}
]]>
</fx:Script>
<s:ViewNavigator firstView="views.WhosAtTheDoorHomeView"
height="100%"
label="Page1"
width="100%">
<s:titleContent>
<s:Button click="BackBtn(event)"
label="Back"/>
</s:titleContent>
</s:ViewNavigator>
<s:ViewNavigator firstView="views.WhosAtTheDoorHomeViewCopy"
height="100%"
label="Page2"
width="100%">
<s:titleContent>
<s:Button click="BackBtn(event)"
label="Back"/>
</s:titleContent>
</s:ViewNavigator>
</s:TabbedViewNavigatorApplication>
来源:https://stackoverflow.com/questions/9219760/flex-mobile-tabbedviewnavigatorapplication-back-button