您当前的位置: spring动画(swift)
by 伍雪颖
loginButton.center.y
+=
30
loginButton.alpha = 0
UIView.animateWithDuration(1, delay: 0.5,
usingSpringWithDamping: 0.5,
initialSpringVelocity: 0,
options: .AllowUserInteraction,
animations: {
self.loginButton.center.y -= 30
self.loginButton.alpha = 1
loginButton.alpha = 0
UIView.animateWithDuration(1, delay: 0.5,
usingSpringWithDamping: 0.5,
initialSpringVelocity: 0,
options: .AllowUserInteraction,
animations: {
self.loginButton.center.y -= 30
self.loginButton.alpha = 1
}, completion:
nil)
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