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ShakeAnimation; a variant on @danielctull's versopm
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@implementation ShakeAnimation { | |
CGRect originalRect; | |
NSInteger counter; | |
} | |
+ (void)shakeView:(UIView *)view { | |
[[[[self class] alloc] initWithView:view] shake]; | |
} | |
- (id)initWithView:(UIView *)view { | |
self = [super init]; | |
if (self) { | |
self.view = view; | |
originalRect = view.frame; | |
counter = 20; | |
} | |
return self; | |
} | |
- (void)shake { | |
[UIView animateWithDuration:0.05f animations:^{ | |
[self.view addFrameX:10 * flip]; | |
} completion:^(BOOL finished){ | |
[self shakeWithDirection:-1 completion:^{ | |
[UIView animateWithDuration:0.05f animations:^{ | |
self.view.frame = originalRect; | |
}]; | |
}]; | |
}]; | |
} | |
- (void)shakeWithDirection:(NSInteger)flip completion:(dispatch_block_t)completion { | |
[UIView animateWithDuration:0.05f animations:^{ | |
[self.view addFrameX:10 * flip]; | |
} completion:^(BOOL finished){ | |
counter--; | |
if (counter == 0) | |
completion(); | |
else | |
[self shakeWithDirection:flip * -1 completion:completion]; | |
}]; | |
} | |
@end |
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