partial void ChangeViewPressed(Foundation.NSObject sender)
{
var button = sender as UIButton;
button.Selected = !button.Selected;
var animation = POPSpringAnimation.AnimationWithPropertyNamed(POPAnimation.LayoutConstraintConstant);
animation.ToValue = new NSNumber(button.Selected ? (ContainerViewWidthConstraint.Constant + 16) * -1 : 0);
ContainerViewConstraint.AddAnimation(animation, "constraint");
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// Perform any additional setup after loading the view, typically from a nib.
button = new UIButton()
{
BackgroundColor = UIColor.FromHSBA(0.531f, 1, 1, 1),
Frame = new RectangleF(0, 0, 140, 140),
};
button.SetTitleColor(UIColor.White, UIControlState.Normal);
button.SetTitle("Tap to start", UIControlState.Normal);
button.Layer.CornerRadius = 70;
button.TouchUpInside += delegate {
var anim = button.PopAnimationForKey("bounce.me");
if (anim != null)
{
button.PopRemoveAnimationForKey("bounce.me");
button.SetTitle("Tap to start", UIControlState.Normal);
}
else
{
float size = 1;
NSValue fromValue = NSValue.FromSizeF(new SizeF(size, size));
NSValue toValue = NSValue.FromSizeF(new SizeF(1.4f, 1.4f));
POPSpringAnimation bounce = POPSpringAnimation.AnimationWithPropertyNamed(POPMutableAnimatableProperty.POPViewScaleXY);
bounce.SpringBounciness = 14;
bounce.FromValue = fromValue;
bounce.ToValue = toValue;
// Note: CompletionBlock is much more reliable than Finished
bounce.CompletionBlock = delegate(POPAnimation animation, bool finished) {
if (finished)
{
// Auto-reverse
var prevFrom = (animation as POPSpringAnimation).FromValue;
(animation as POPSpringAnimation).FromValue = (animation as POPSpringAnimation).ToValue;
(animation as POPSpringAnimation).ToValue = prevFrom;
button.PopAddAnimation(animation, "bounce.me");
}
};
button.PopAddAnimation(bounce, "bounce.me");
button.SetTitle("Tap to stop", UIControlState.Normal);
}
};
button.Center = View.Center;
View.Add(button);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
PopButton.TouchUpInside += (object sender, EventArgs e) => {
var springAnimation = POPSpringAnimation.AnimationWithPropertyNamed(POPAnimation.ViewCenter);
var newCenter = PopButton.Center;
newCenter.Y = newCenter.Y + 200;
springAnimation.ToValue = NSValue.FromCGPoint(newCenter);
springAnimation.CompletionAction = (POPAnimation arg1, bool arg2) => {
var decayAnimation = POPDecayAnimation.AnimationWithPropertyNamed(POPAnimation.LayerPositionY);
decayAnimation.Velocity = new NSNumber(-800);
decayAnimation.AutoReverse = true;
decayAnimation.RepeatForever = true;
decayAnimation.ClampMode = POPAnimationClampFlags.Both;
PopButton.AddAnimation(decayAnimation, "Decay");
};
PopButton.AddAnimation(springAnimation, "Center");
};
}