textField scroll across the tabBar

Hello,

i have a problem.

I have a project with a tabBar and several views. In a view I used the scrollView and add these buttons, text and a textField through using insert(). Now when I scroll on my device in this scrollView, only the textField overlaps the tabBar.

Is it possible to place the tabBar above it all or the scrollView to be limited to a height so that the content of the scrollView, the tabbar is not reached?

Sorry for my bad english