I followed the chapter 4 to create the simple application. There are a Segmented Control , Switches & a Button (named "Do Something"). In my nib, everything is located well. The Switches & the Button are below Segmented Control, and the Button is located at the same position of Switches, which covers the Switches.
But when I run my app on simulator, the layout shows differently. The Switches & the "Do Something" Button are above the Segmented Control, and partly overlapped with each other. Why? Which attribute I missed to set??