Описание тега catransaction

CATransaction allows you to make batch updates to the Core Animation render tree. It is most used to override default animation timing functions, durations, etc. or to add a completion block to an animation that doesn't expose one explicitly.

CATransaction allows to trigger implicit animations just by setting layer properties inside of a transaction block. Animating the position of a layer in Objective C:

[CATransaction begin];
[CATransaction setAnimationDuration:0.5];
layer.position = newPosition;
[CATransaction commit];

or the same in Swift:

CATransaction.begin()
CATransaction.setAnimationDuration(0.5)
layer.position = newPosition
CATransaction.commit()

For more information, see the Apple Documentation for CATransaction.