Problem of Loading Xib with Tab bar Controller

Question

Hello,

I am using two xib one without tab bar and another with tab bar controller.

In starting i load the xib without tab bar-navigation bar then flow are working.But if i load a xib with tab bar Controller -navigation bar then our all view slide bellow and half tab bar are not showing. So Please give some code how to use tab bar controller while pushing from another Xib

Thanks Ritesh Kumar