caanimation

问题 I need to chain animations, CABasicAnimation or CAAnimationGroup but I don't know how to do it, the only that I do is that all the animation execute at the same time for the same layer. How could I do it? For example, a layer with its contents set to a car image: 1st: move X points to right 2nd: Rotate 90ª to left 3rd: Move X point 4th: Scale the layer All this animations must be executed in a secuencial way, but I can't do it :S BTW: I am not english, sorry if I made some mistakes in my

问题 I\'m setting a new text value to a UILabel . Currently, the new text appears just fine. However, I\'d like to add some animation when the new text appears. I\'m wondering what I can do to animate the appearance of the new text. 回答1: Objective-C To achieve a true cross-dissolve transition (old label fading out while new label fading in), you don't want fade to invisible. It would result in unwanted flicker even if text is unchanged . Use this approach instead: CATransition *animation =