mark

    CGFloat naviBarHeight = self.navigationController.navigationBar.frame.size.height;

    CGFloat tabbarHeight = self.tabBarController.tabBar.frame.size.height;

    CGFloat statusbarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;

    CGFloat viewHeight = self.view.frame.size.height;

    CGFloat applicationHeight = [UIScreen mainScreen].applicationFrame.size.height;

    CGFloat boundHeight = [UIScreen mainScreen].bounds.size.height;

    

//    applicationHeight = 548

//    statusbarHeight = 20

//    boundHeight = 568

//    viewHeight = 568

//    tabbarHeight = 49

//    naviBarHeight = 44