Question

I want to use the same effect Apple uses in iOS5 for showing new notifications (this flip-in effect). But I don’t know how to start or what to google for. Could somebody please give me a hint?

Thanks!

Answer 1

Create two CALayers. One aligned normally along the x and y axis, the other rotated around the x axis so that it “lies flat”, i.e. its surface points down along the y axis.

Then rotate both layers by 90 degrees along the x axis. At the end of the rotation, the first layer will now “lie flat”, pointing upward along the y axis and the second layer will be aligned normally along the x and y axes.