Titanium.UI.currentTab is null?

Question

Titanium.UI.currentTab is null?

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I have copied code straight from the KitchenSink to create a 2 tab setup. My program navigates between the 2 tabs perfectly. The 1st tab is just a label displaying text, the 2nd tab is a TableView listing menu items. It currently has 1 item on it. When you click that item I have this code:

// create table view event listener
    tableview.addEventListener('click', function(e)
    {
        if (e.rowData.test)
        {
            var win = Titanium.UI.createWindow({
                url:e.rowData.test,
                title:e.rowData.title
            });
            Titanium.UI.currentTab.open(win,{animated:true});
        }
    });

This code raises the error: "Result of expression 'Titanium.UI.currentTab' [undefined] is not an object." When you look at "Titanium.UI.currentTab" you get a null value. Why is it null and how can I make sure it is set correctly?

3 Answers

Your Answer

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In fact, in my app.js before and after I create my tabgroup and call .open() if I log the currentTab like this:
Titanium.API.info(Titanium.UI.currentTab); // Titanium Log Item
I get null no matter what.

— commented 2 years ago by James Wright

Accepted Answer

Accepted Answer

the work around until it is fixed is to capture the event and set the currentTab yourself

tabGroup.addEventListener('focus', function(e){
    tabGroup._activeTab = e.tab
    tabGroup._activeTabIndex = e.index
    if ( tabGroup._activeTabIndex == -1) return;
    Ti.API.info(tabGroup._activeTabIndex);
    Ti.API.info(tabGroup._activeTab.title);
 
    // create property in Ti namespace
    Ti.API._activeTab = tabGroup._activeTab;
    Ti.API.info(Ti.API._activeTab.title);
 
});

Answer 2

I assume you want to get the activeTab.... You need to call activeTab on your TabGroup i.e.;

Ti.API.debug("tabGroup: " + tabGroup.activeTab)

At least thats what I'm using... Please note that there is a problem with tabGroup.activeTab on android in 1.5.1 as it returns undefined. It is however fixed in GIT.

Nils

Answer 3

Following up on the comments I manually set the currentTabGroup after the tab was created and seems to work fine for me.

var 
    tabGroup = Titanium.UI.createTabGroup();    
    Titanium.UI.currentTabGroup = tabGroup;  // ** Set reference manually