uiviewanimation

How to make UIView animation sequence repeat and autoreverse

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To animation from point 1 to 2 to 3 to 2 to 1 and repeat, you can do use animateKeyframesWithDuration in iOS 7 and later: someView.frame = frame1; [UIView animateKeyframesWithDuration:2.0 delay:0.0 options:UIViewKeyframeAnimationOptionAutoreverse | UIViewKeyframeAnimationOptionRepeat animations:^{ [UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:0.5 animations:^{ someView.frame = frame2; }]; [UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.5 animations:^{ someView.frame = frame3; }]; } completion:nil]; If using … Read more

UIView animation based on UIPanGestureRecognizer velocity

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The docs say The velocity of the pan gesture, which is expressed in points per second. The velocity is broken into horizontal and vertical components. So I’d say, given you want to move your view xPoints (measured in pt) to let it go off-screen, you could calculate the duration for that movement like so: CGFloat … Read more

UIView animation options using Swift

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Swift 3 Pretty much the same as before: UIView.animate(withDuration: 0.2, delay: 0.2, options: UIViewAnimationOptions.repeat, animations: {}, completion: nil) except that you can leave out the full type: UIView.animate(withDuration: 0.2, delay: 0.2, options: .repeat, animations: {}, completion: nil) and you can still combine options: UIView.animate(withDuration: 0.2, delay: 0.2, options: [.repeat, .curveEaseInOut], animations: {}, completion: nil) Swift … Read more

UIView.animateWithDuration swift loop animation

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No need to do the completion block approach, just use the animation options argument: updated for Swift 3.0 UIView.animate(withDuration: 2.0, delay: 0, options: [.repeat, .autoreverse], animations: { coloredSquare.frame = CGRect(x: 120, y: 220, width: 100, height: 100) }, completion: nil) If for any reason you want to stop the animation later, just use: coloredSquare.layer.removeAllAnimations()

iOS Segue – Left to Right –

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This is how I achieve the effect without requiring a nav-controller. Try this instead: Swift 4: import UIKit class SegueFromLeft: UIStoryboardSegue { override func perform() { let src = self.source let dst = self.destination src.view.superview?.insertSubview(dst.view, aboveSubview: src.view) dst.view.transform = CGAffineTransform(translationX: -src.view.frame.size.width, y: 0) UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseInOut, animations: { dst.view.transform = CGAffineTransform(translationX: 0, … Read more

How to animate a UIView with constraints in Swift?

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What you can do is to add the following code in your viewDidAppear method. You firstly make a IBOutlet property of your view’s center Y constraint, and then change its constant value. self.centerYConstraint.constant = 500.0 self.view.layoutIfNeeded() UIView.animateWithDuration(Double(0.5), animations: { self.centerYConstraint.constant = 0 self.view.layoutIfNeeded() })

UIButton can’t be touched while animated with UIView animateWithDuration

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Swift 5 In my case, when I set button.alpha = 0, the button interaction stops working, no matter if I setup UIViewAnimationOptionAllowUserInteraction as an option. Reason Whenever you define the animation or not, the view’s property is applying to view’s layer immediately. Because of this, when you set the view.alpha=0, you hide the view completely. … Read more

iOS: How to convert UIViewAnimationCurve to UIViewAnimationOptions?

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The category method you suggest is the “right” way to do it—you don’t necessarily have a guarantee of those constants keeping their value. From looking at how they’re defined, though, it seems you could just do animationOption = animationCurve << 16; …possibly with a cast to NSUInteger and then to UIViewAnimationOptions, if the compiler feels … Read more