Sometimes it’s not that please for a user to see an UI component disappearing suddenly. You’d then consider adding some transition effects, and here’s a little code snippet in the UIView+JTRemoveAnimated category for how you can get a fade out effect on view removal.
So from now on, you just needed to do this to fade out any UIViews
[myView removeFromSuperviewAnimated]
| // | |
| // UIView+JTRemoveAnimated.h | |
| // | |
| // Created by james on 9/1/11. | |
| // http://ioscodesnippet.tumblr.com/ | |
| // | |
| @interface UIView (JTRemoveAnimated) | |
| - (void)removeFromSuperviewAnimated; | |
| @end |
| // | |
| // UIView+JTRemoveAnimated.m | |
| // | |
| // Created by james on 9/1/11. | |
| // http://ioscodesnippet.tumblr.com/ | |
| // | |
| #import <QuartzCore/QuartzCore.h> | |
| @implementation UIView (JTRemoveAnimated) | |
| // remove static analyser warnings | |
| #ifndef __clang_analyzer__ | |
| - (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context { | |
| if ([animationID isEqualToString:@"fadeout"]) { | |
| // Restore the opacity | |
| CGFloat originalOpacity = [(NSNumber *)context floatValue]; | |
| self.layer.opacity = originalOpacity; | |
| [self removeFromSuperview]; | |
| [(NSNumber *)context release]; | |
| } | |
| } | |
| - (void)removeFromSuperviewAnimated { | |
| [UIView beginAnimations:@"fadeout" context:[[NSNumber numberWithFloat:self.layer.opacity] retain]]; | |
| [UIView setAnimationDuration:0.3]; | |
| [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)]; | |
| [UIView setAnimationDelegate:self]; | |
| self.layer.opacity = 0; | |
| [UIView commitAnimations]; | |
| } | |
| #endif | |
| @end |