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UILabel の textColor をアニメーションさせる

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UILabel とかのテキストの色 textColor をアニメーションでふわっと代えたい場合、transitionWithView:duration:options:animations: を使うのが簡単。

[UIView transitionWithView:self.myLabel
                  duration:0.5
                   options:UIViewAnimationOptionTransitionCrossDissolve
                animations:^{
                    self.myLabel.textColor = [UIColor whiteColor];
                } completion:^(BOOL finished) {
                }];

すごい今更感あるTipsですが、ググると

http://stackoverflow.com/questions/3944416/ipad-animate-uilabels-color-changing

こういうのが出てきて、上記のシンプルな方法がすぐに見つからなかったので備忘録として。

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