core-animation

I am rotating an NSImageView from its center which is working perfectly however when I start the animation the NSImageView hops from its location to a random location. I do not know why is it happening. Please help. I am elaborating how I am doing it all. Also, I am providing a Github link so that you may run it if you want. github project link Code: // on button press animation will be started -(void)buttonPressed:(id)sender{ // setting the anchor point of the view _img.layer.anchorPoint = CGPointMake(0.5f, 0.5f); // calling the animation function [self startRefreshAnimation]; } // in order

I have an UIImageView that runs across the screen when a button is pressed and held. When the button is pressed is changes the UIImage of the UIImageView and when the button is let go I change it to its original UIImage. When ever the image changes back it snaps back to the location that the image started. This Timer is called when the button is pressed: //This is the image that changes when the button is pressed. imView.image = image2; runTimer = [NSTimer scheduledTimerWithTimeInterval:0.04 target:self selector:@selector(perform) userInfo:nil repeats:YES]; This is called When the button stops

I am trying to display rotated text. The UILabel is added as a subview on a UIImageView. The UIImageView has a transform created via say CGAffineTransformMakeRotation(M_PI/4.0). The text of the UILabel renders fairly blurry cf. the title label (in the screenshot, the blue background 'What's ...'). Do you know how I can manage to make the rotated text render clearly? I've already tried using an integral-based frame (which matters little since it'll be rotated), a non-clear background color, and setting the label to opaque=YES. Still blurry. Thanks! The problem is that your label is rendered in

I'm trying to do a simple animation of moving the frame of two views. Basically hiding the Ad until it is loaded, and then move the frame up from the bottom, along with the view that starts at the bottom, and then will move up also when the Ad pushes it up. The start and end positions are correct, but I don't see it being animated. Is this correct? Thanks. CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"frame"]; animation.duration = 1.0; CGRect adFrame = CGRectMake(self.adBanner.frame.origin.x, self.adBanner.frame.origin.y - self.adBanner.frame.size.height, self

I am doing a transition of an UIImageView's image and would also like to move the image view at the same time. The results so far is that the image transitions, but not while moving. class ViewController: UIViewController { @IBOutlet weak var imageView: UIImageView! @IBOutlet weak var imageViewTopConstraint: NSLayoutConstraint! override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) UIView.transition(with: imageView, duration: 2.0, options: .transitionCrossDissolve, animations: { self.imageView.image = UIImage(named: "otherImage") }, completion: nil)