Reimplement UIView block based animation methods with custom easing curve

Question

The lack of custom easing curves in UIView\'s block based animation methods leads to Core Animation if more advanced curves are needed.

A way of doing this with a Categ

Answer 1

I don't know how Apple implements their block based methods, but reading BlocksKit sourcecode, I understood that to implement the method you mentioned, you probably need to:

1. Declare a UIView category such as UIView (block)
2. In the category, add a NSTimer property to fire/invalidate the timer with given duration
3. In the category, add a block property to keep the easingCurveFunction block code
4. In the category, add another block perty to keep the animation block code
5. In your block-based method, set the timer, save the blocks code to properties
6. When the timer fires, run the easingCurveFunction block and animation block, as you keep them in the properties

I actually followed this practice when adding my own block-based methods to Apple's classes.