UIButton 调整大小动画不是动画
UIButton resize animation is not animating
我正在尝试使用 UIView 动画使我的按钮的大小加倍,但由于某种原因它不起作用,大小正确,但没有动画。
应该为按钮调整大小设置动画的函数
以上代码无关
@objc func createButtonPressed(){
//Removes the bottom stack with buttons
if let stackButton = self.view.viewWithTag(50){
stackButton.removeFromSuperview()
}
//Add the button back with half ares size
bottomHolder.addSubview(rightButton)
rightButton.setImage(nil, for: .normal)
rightButton.addTarget(self, action: #selector(anima), for: .touchUpInside)
rightButton.topAnchor.constraint(equalTo: bottomHolder.topAnchor).isActive = true
rightButton.trailingAnchor.constraint(equalTo: bottomHolder.trailingAnchor).isActive = true
rightButton.bottomAnchor.constraint(equalTo: bottomHolder.bottomAnchor).isActive = true
}
@objc func anima(){
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.rightButton.leadingAnchor.constraint(equalTo: self.bottomHolder.leadingAnchor).isActive = true
self.rightButton.layoutIfNeeded()
}, completion: nil)
}
下面是不相关的代码
试试这个:
let buttonFinalWidth = UIScreen.main.bounds.width
DispatchQueue.main.async {
UIView.animate(withDuration: 5.0) {
self.rightButton.widthAnchor.constraint(equalToConstant: buttonFinalWidth).isActive = true
self.view.layoutIfNeeded()
}
}
我正在尝试使用 UIView 动画使我的按钮的大小加倍,但由于某种原因它不起作用,大小正确,但没有动画。
应该为按钮调整大小设置动画的函数
以上代码无关
@objc func createButtonPressed(){
//Removes the bottom stack with buttons
if let stackButton = self.view.viewWithTag(50){
stackButton.removeFromSuperview()
}
//Add the button back with half ares size
bottomHolder.addSubview(rightButton)
rightButton.setImage(nil, for: .normal)
rightButton.addTarget(self, action: #selector(anima), for: .touchUpInside)
rightButton.topAnchor.constraint(equalTo: bottomHolder.topAnchor).isActive = true
rightButton.trailingAnchor.constraint(equalTo: bottomHolder.trailingAnchor).isActive = true
rightButton.bottomAnchor.constraint(equalTo: bottomHolder.bottomAnchor).isActive = true
}
@objc func anima(){
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
self.rightButton.leadingAnchor.constraint(equalTo: self.bottomHolder.leadingAnchor).isActive = true
self.rightButton.layoutIfNeeded()
}, completion: nil)
}
下面是不相关的代码
试试这个:
let buttonFinalWidth = UIScreen.main.bounds.width
DispatchQueue.main.async {
UIView.animate(withDuration: 5.0) {
self.rightButton.widthAnchor.constraint(equalToConstant: buttonFinalWidth).isActive = true
self.view.layoutIfNeeded()
}
}