How to add a child at the top of the z-order(above a mobile textinput field)?

We posted a problem yesterday with PopupManager where in a mobile app, we experience some strange problems, and have had to make our own modal Alert panel to solve the problem.

The problem now is that if the alert panel is displayed over a TextInput field(mobile android app), the text in the textinput  shows through the Alert panel, and is obviusly higher up in the z-order than our alert panel.

The alert panel  was added as a child of the main app window, and is as far as we can tell the top level component.

Since the PopupManager does not have this problem, there must be a way to add our panel so it is displayed over the mobile textinput field.

Is there any way to accomplish this?

Thanks,

Bob

EDT