// 状态栏(statusbar)
CGRect rectStatus = [[UIApplication sharedApplication] statusBarFrame];
NSLog(@"status width - %f", rectStatus.size.width); // 宽度
NSLog(@"status height - %f", rectStatus.size.height); // 高度
// 导航栏(navigationbar)
CGRect rectNav = self.navigationController.navigationBar.frame;
NSLog(@"nav width - %f", rectNav.size.width); // 宽度
NSLog(@"nav height - %f", rectNav.size.height); // 高度