Xcode5坐标原点设置为状态栏左下角

在UIViewController中添加

- (void) viewDidLayoutSubviews
{
if(floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1)
{
CGRect viewBounds = self.view.bounds;
CGFloat topBarOffset = self.topLayoutGuide.length;
viewBounds.origin.y = topBarOffset * -1;
self.view.bounds = viewBounds;
}
}