UIViewUtilities.mm

#import "UIViewUtilities.h"

@implementation UIView (Utilities)

- (void)transitionInBottom {
  float slideDist = self.superview.bounds.size.height -
                    (self.center.y - self.bounds.size.height * 0.5);
  // move it down then animate it back up
  self.center = CGPointMake(self.center.x, self.center.y + slideDist);
  [UIView animateWithDuration:0.25
                        delay:0
                      options:nil
                   animations:^{
                     self.center =
                         CGPointMake(self.center.x, self.center.y - slideDist);
                   }
                   completion:^(BOOL completed){
                   }];
}

- (void)transitionOutBottom {
  float slideDist = self.superview.bounds.size.height -
                    (self.center.y - self.bounds.size.height * 0.5);
  [UIView animateWithDuration:0.25
      delay:0
      options:nil
      animations:^{
        self.center = CGPointMake(self.center.x, self.center.y + slideDist);
      }
      completion:^(BOOL completed) {
        [self removeFromSuperview];
      }];
}

- (void)transitionInTop {
  float slideDist = self.center.y + self.bounds.size.height * 0.5;
  // move it up then animate it back down
  self.center = CGPointMake(self.center.x, self.center.y - slideDist);
  [UIView animateWithDuration:0.25
                        delay:0
                      options:nil
                   animations:^{
                     self.center =
                         CGPointMake(self.center.x, self.center.y + slideDist);
                   }
                   completion:^(BOOL completed){
                   }];
}

- (void)transitionOutTop {
  float slideDist = self.center.y + self.bounds.size.height * 0.5;
  [UIView animateWithDuration:0.25
      delay:0
      options:nil
      animations:^{
        self.center = CGPointMake(self.center.x, self.center.y - slideDist);
      }
      completion:^(BOOL completed) {
        [self removeFromSuperview];
      }];
}

@end