从一个选项卡移动到另一个选项卡后,dojox.mobile.currentView为null

时间:2012-07-27 13:17:17

标签: cordova dojo dojox.mobile ibm-mobilefirst

我正在使用以下标签控件:

function tweetsAction()
{
    var w = dojox.mobile.currentView;
    if (w.id != "tweetsView") w.performTransition('tweetsView', 1, "slide", null);
}

function secondAction()
{
    var w = dojox.mobile.currentView;
    if (w.id != "secondView") w.performTransition('secondView', 1, "slide", null);
}

function thirdAction()
{
    var w = dojox.mobile.currentView;
    if (w.id != "thirdView") w.performTransition('thirdView', 1, "slide", null);
}

在Worklight JavaScript中初始化它们,例如:

function initCommonControls()
{
    console.log("Android initCommonControls");

    WL.TabBar.init();
    WL.TabBar.addItem("tweetsView", tweetsAction, "Tweets", {image:"images/icons/help_bw.png", imageSelected:"images/icons/help.png"});
    WL.TabBar.addItem("secondView", secondAction, "Second", {image:"images/icons/help_bw.png", imageSelected:"images/icons/help.png"});
    WL.TabBar.addItem("thirdView", thirdAction, "Third", {image:"images/icons/help_bw.png", imageSelected:"images/icons/help.png"});

    WL.TabBar.setSelectedItem("tweetsView");
}

应用启动时标签显示正常:

enter image description here

但是,当我点击第二个或第三个标签时,这两个标签都会移动到第一个标签上:

enter image description here

我在JS控制台中看到了这个JavaScript错误:

  

未捕获的TypeError:无法读取未定义的属性“id”

这意味着`var w = dojox.mobile.currentView;离开初始标签后,无法获得当前视图。

这就是我的HTML:

<!-- Tweets View -->
    <div id="tweetsView" data-dojo-type="dojox.mobile.ScrollableView" data-dojo-props="selected: true">
        <div class="spacing"></div>
        <h1 id="head0" data-dojo-type="dojox.mobile.Heading" 
            data-dojo-props="label:'Tweet Search', fixed:'top'"></h1>
        <button onclick="getTweets()">Get Tweets</button>
        <input data-dojo-type="dojox.mobile.TextBox" id="sampleItem">
        <ul data-dojo-type="dojox.mobile.EdgeToEdgeList" id="theTable"
            class="tweetviewList">
        </ul>
    </div>

    <!-- second View -->
    <div id="secondView" data-dojo-type="dojox.mobile.ScrollableView" data-dojo-props="selected:false">
        <div class="spacing"></div>
        <h1 data-dojo-type="dojox.mobile.Heading" 
            data-dojo-props="label:'second view', fixed:'top'"></h1>
        This is a second view
    </div>

    <!-- third View -->
    <div id="thirdView" data-dojo-type="dojox.mobile.ScrollableView" data-dojo-props="selected:false">
        <div class="spacing"></div>
        <h1 data-dojo-type="dojox.mobile.Heading" 
            data-dojo-props="label:'third view', fixed:'top'"></h1>
        This is a third view
    </div>

关于切换标签后dojox.mobile.currentView为什么没有返回任何内容的任何想法?

1 个答案:

答案 0 :(得分:1)

我猜它与此有关:http://bugs.dojotoolkit.org/ticket/15040。听起来他们已经从最新版本的Dojo Mobile中删除了dojox.mobile.currentView。我目前正在使用Worklight做一些事情,而且我也为dojox.mobile.currentView获取'undefined'。

该页面上有几条建议,但现在看来一切都需要复杂得多 - yay :(