# How to Animate UILabel Properties

UILabel properties cannot be easy animated due to some various reasons, so code like this will have no effect on it:

 1 2 3 4 5 6 7  self.someLabel.textColor = [UIColor blueColor]; [UIView animateWithDuration:0.3 animation:^{ self.someLabel.textColor = [UIColor redColor]; }]; 

But there is a simple solution. Instead of animating property we will perform transition on object itself.

Using transitionWithView should solve our problem:

 1 2 3 4 5 6 7 8 9 10  self.someLabel.textColor = [UIColor blueColor]; [UIView transitionWithView:self.someLabel duration:0.3 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{ self.someLabel.textColor = [UIColor redColor]; } completion:nil]; 

This creates nice fade in/out animation which is exactly what we want.

posted on 2017-03-20 17:03 不及格的程序员-八神 阅读(...) 评论(...) 编辑 收藏