primefaces tabView activeIndex问题 [英] primefaces tabView activeIndex issue

问题描述

我有两个类似的Tab的Primefaces TabView:

I have Primefaces TabView with two Tab like:

<p:tabView dynamic="true" cache="false"
           onTabShow="scrollBottom(#{stanzaBean.activeIndex})"
           tabChangeListener="#{messaggioBean.onTabChange}"
           activeIndex="#{stanzaBean.activeIndex}" >

它工作正常，但当我更改选项卡时，activeIndex不会在服务器上更新，并且始终返回默认值. 我正在使用Primefaces 2.2.1.

it works fine, except that when I change the Tab the activeIndex isn't updated on the Server and it returns always the default value. I'm using primefaces 2.2.1.

谢谢.

推荐答案

PrimeFaces ShowCase示例，如果您为每个标签指定一个ID:

Going by the PrimeFaces ShowCase example, if you give each tab an id:

<p:tabView tabChangeListener="#{indexBean.onTabChange}" >
    <p:tab title="tab 0" id="tab0"></p:tab>
    <p:tab title="tab 1" id="tab1" ></p:tab>
    <p:tab title="tab 2" id="tab2"></p:tab>               
</p:tabView>

您可以在tabChangeListener中获得该标签ID.

you can get that tab id in the tabChangeListener.

public void onTabChange(TabChangeEvent event) {       
    System.out.println("tab id = " + event.getTab().getId());
}

然后，您将知道选择了哪个选项卡.

Then you'll know which tab was selected.

有一个开放的PrimeFaces

There is an open PrimeFaces issue 1640 TabView: Wrong activeIndex in TabChangeListener, always 0 on the problem you are having.

在PrimeFaces 5.0及更高版本中，tabChangeListener在tabView元素上不再可用，但应通过带有tabChange事件的显式ajax标记使用.

With PrimeFaces 5.0 and up the tabChangeListener is no longer available on the tabView element but should be used via an explicit ajax tag with a tabChange event.

 <p:tabView id="analysisSections" value="#{analysisBean.analysis.sections}" var="section" activeIndex="#{analysisBean.activeIndex}">
      <p:ajax event="tabChange" listener="#{analysisBean.onTabChange}"/>

您还可以直接获取标签的索引:

Also you can directly get index of tab:

public void onTabChange(TabChangeEvent event) {
    activeIndex = ((TabView) event.getSource()).getIndex();
}

所有这些更改后，activeIndex正常工作.

with all these changes, activeIndex works properly.

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