Question

I’m writing an iPhone app using Appcelerator Titanium Mobile. I am hiding and showing the tab group based on what window has focus.

dashWin.addEventListener("focus",function(e) {
    if (dashWin.tabGroupVisible == true) {
        dashWin.tabGroupVisible=false;
        tabGroup.animate({bottom:-50,duration:500});
    }
});

The code above hides the tab group when dashWin receives a focus event. However, I see this message in the Titanium console when the event fires while running in the iPhone simulator:

Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.

A Google search turns up one result: Another StackOverflow question that may have a hint as to what’s going on.

Answer 1

Usually a tab group acts as the root of your app’s navigation. When a user taps a tab, that tab’s window is focused.

Next, when a user triggers an action that requires a new window appear, it usually appears either modally or on top (in the navigation stack sense) of the current window. In the latter case, tell the current tab to open the new window.

If you set the tabBarHidden property to false (when you create the new window), the tab bar will be hidden for you when the new window is opened by the current tab.

Will this more standard approach work for you?