objective-c - Window disappears for a short time on setContentView

Question

here is my code:

- (void)showEditBackground
{
    editBackgroundController = [[EditBackgroundVC alloc] initWithNibName:@"BackgroundVC" bundle:nil];
    [window setContentView:editBackgroundController.view];
}

the problem is: If I call this code the window is going shortly transparent. After this very short time the window comes back with the view loaded. It looks like a flash.

This only happens if editBackgroundControllers view has a IKImageView as one subview. Any ideas?

Thank you

Answer 1

这是我对这个问题的解决方案：在某些视图中，IB 中的“核心动画层”是“开启”的。