核心动画：仅从iPhone的一侧调整图层大小

Question

I want to animate the resize of a CALayer . It needs to expand from the left (the right side needs to stay put). Setting the anchorPoint will make resizes work this way, but once I start animating, it doesn't behave the way I want it to.

Does anyone have a suggestion? Thanks, and sorry for the noob-question.

Answer 1

尝试根据所需的调整大小来计算新位置，并在设置新边界的同时设置图层的position 。