how to set iOS 6/7 Deltas programmatically

Question

I was developing a UISplitView app by using Xcode 4.6 when I left iOS6 I had design:

Answer 1

In iOS 7 there are now extended edges, and that's why navigation bar overlaping the searchbar. You can set self.edgesForExtendedLayout = UIRectEdgeNone; this is UIVewControlelr property. You can also make checks depending on version of iOS and You can do things depending on current version of iOS in device.

NSString *version = [[UIDevice currentDevice] systemVersion];
int ver = [version intValue];
if (ver < 7){
//iOS 6 work
}
else{
//iOS 7 related work
}