在Flash Builder 4.5 Burrito中,如何在ViewNavigator之间传递数据
我尝试了一下,碰巧我很难弄清楚如何在选项卡式MobileApplication中的ViewNavigator之间传递数据在Flash Builder 4.5 Burrito中,如何在ViewNavigator之间传递数据,flash,apache-flex,flex4,flash-builder,flashbuilder4,Flash,Apache Flex,Flex4,Flash Builder,Flashbuilder4,我尝试了一下,碰巧我很难弄清楚如何在选项卡式MobileApplication中的ViewNavigator之间传递数据 <s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark"> <fx:Declarations> </fx:Declarations&g
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">
<fx:Declarations>
</fx:Declarations>
<s:ViewNavigator id="nav1" label="Nav1" firstView="views.Nav1Home" width="100%" height="100%"/>
<s:ViewNavigator id="nav2" label="Nav2" firstView="views.Nav2Home" width="100%" height="100%"/>
</s:TabbedMobileApplication>
如何在导航1和导航2之间传递数据?我知道如何在导航视图之间执行此操作
谢谢,
B.除非我在这里遗漏了什么,否则您要做的是在这里添加一个脚本块,并收听ViewNavigator中的事件。然后在事件的处理程序中,在目标ViewNav上调用公共函数
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" creationComplete="init()">
<fx:Declarations>
</fx:Declarations>
<fx:script><![CDATA[
private function init():void{
nav1.addEvenListener(CustomEvent.DATA, onData);
}
private function onData(ev:CustomEvent):void{
nav2.setData(ev.data);
}
]]></fx:script>
<s:ViewNavigator id="nav1" label="Nav1" firstView="views.Nav1Home" width="100%" height="100%"/>
<s:ViewNavigator id="nav2" label="Nav2" firstView="views.Nav2Home" width="100%" height="100%"/>
</s:TabbedMobileApplication>
TJ已经做对了。如果有人遇到同样的问题,只需发布最后一个示例: TestApplication.mxml
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
creationComplete="init()">
<fx:Declarations>
</fx:Declarations>
<fx:Script>
<![CDATA[
private function init():void{
nav1.activeView.addEventListener(CustomEvent.DATA, onData);
nav2.activeView.addEventListener(CustomEvent.DATA, onData);
}
private function onData(ev:CustomEvent):void{
nav1.activeView.data = ev.data;
nav2.activeView.data = ev.data;
}
]]>
</fx:Script>
<s:ViewNavigator id="nav1" label="Nav1" firstView="views.Nav1Home" width="100%" height="100%"/>
<s:ViewNavigator id="nav2" label="Nav2" firstView="views.Nav2Home" width="100%" height="100%"/>
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
}
views.Nav1Home.mxml
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
creationComplete="init()">
<fx:Declarations>
</fx:Declarations>
<fx:Script>
<![CDATA[
private function init():void{
nav1.activeView.addEventListener(CustomEvent.DATA, onData);
nav2.activeView.addEventListener(CustomEvent.DATA, onData);
}
private function onData(ev:CustomEvent):void{
nav1.activeView.data = ev.data;
nav2.activeView.data = ev.data;
}
]]>
</fx:Script>
<s:ViewNavigator id="nav1" label="Nav1" firstView="views.Nav1Home" width="100%" height="100%"/>
<s:ViewNavigator id="nav2" label="Nav2" firstView="views.Nav2Home" width="100%" height="100%"/>
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
views.Nav2Home.mxml
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
creationComplete="init()">
<fx:Declarations>
</fx:Declarations>
<fx:Script>
<![CDATA[
private function init():void{
nav1.activeView.addEventListener(CustomEvent.DATA, onData);
nav2.activeView.addEventListener(CustomEvent.DATA, onData);
}
private function onData(ev:CustomEvent):void{
nav1.activeView.data = ev.data;
nav2.activeView.data = ev.data;
}
]]>
</fx:Script>
<s:ViewNavigator id="nav1" label="Nav1" firstView="views.Nav1Home" width="100%" height="100%"/>
<s:ViewNavigator id="nav2" label="Nav2" firstView="views.Nav2Home" width="100%" height="100%"/>
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
我想补充一点,我更喜欢松散耦合的通信机制,而不是已经讨论过的。我更喜欢某种类型的事件聚合系统,在这种系统中,解耦的组件在彼此不知道对方的情况下发送消息 这种类型的事件系统内置于轻量级框架中,如Parsely和Robot Legs 这基本上是一种时尚,但根据我的经验,我们的沟通越紧密地结合在一起,我们就越愿意为此付出更多的代价
我想这是值得深思的 一种简单的方法是使用ViewNavigator将数据对象添加到视图中。然后在子视图中,使用以下命令获取数据:
this.parentDocument.yourDataObject
如果使用viewNavigator在视图之间转换,最简单的方法是将数据对象传递给视图: 在视图1中:
private function view1_clickHandler(event:Event):void {
var trans:FlipViewTransition = new FlipViewTransition();
var obj:Object = new Object();
obj.showPrevBtn = false;
FlexGlobals.topLevelApplication.tabNavigator.pushView(View2, obj, null, trans);
}
在视图2中:
protected function view2_addedToStageHandler(event:Event):void
{
if(prevBtn != null && this.data != null && this.data.showPrevBtn === true) {
prevBtn.visible = true;
} else if(prevBtn != null && this.data != null && this.data.showPrevBtn === false) {
prevBtn.visible = false;
}
}
TJ,谢谢。这个概念只做了一些小改动就可以了。我同意这有点麻烦,但到目前为止,这是我找到的唯一方法。关于访问数据的机制,我认为通过MobileApplication实例访问单个静态数据属性就足够了。很像一个普通的单身汉。然后视图应该能够访问它。