You can do this by setting the actions dictionary on the layer to return [NSNull null]
as an animation for the appropriate key. For example, I use
NSDictionary *newActions = @{
@"onOrderIn": [NSNull null],
@"onOrderOut": [NSNull null],
@"sublayers": [NSNull null],
@"contents": [NSNull null],
@"bounds": [NSNull null]
};
layer.actions = newActions;
to disable fade in / out animations on insertion or change of sublayers within one of my layers, as well as changes in the size and contents of the layer. I believe the contents
key is the one you’re looking for in order to prevent the crossfade on updated drawing.
Swift version:
let newActions = [
"onOrderIn": NSNull(),
"onOrderOut": NSNull(),
"sublayers": NSNull(),
"contents": NSNull(),
"bounds": NSNull(),
]