Ios 在Swift中平滑扩展UIView动画
目标: 如何设置要展开以填充整个屏幕的Ios 在Swift中平滑扩展UIView动画,ios,swift,animation,uiview,animatewithduration,Ios,Swift,Animation,Uiview,Animatewithduration,目标: 如何设置要展开以填充整个屏幕的ui视图的动画。ui视图在设置动画时需要以平滑、均匀和平衡的方式展开 我在屏幕上放置了一个红方块,开始很小,然后展开以适应屏幕。(图1。) 问题: 在Swift 2和Swift 3中,使用animateWithDuration,如何 为红方块ui视图以平衡、均匀的方式展开的视图设置动画 全方位的方式填满整个屏幕 UIView.animateWithDuration(1.0, delay: 0, options: nil, animations: {
ui视图
的动画。ui视图
在设置动画时需要以平滑、均匀和平衡的方式展开
我在屏幕上放置了一个红方块,开始很小,然后展开以适应屏幕。(图1。)
问题:
在Swift 2和Swift 3中,使用animateWithDuration
,如何
为红方块ui视图
以平衡、均匀的方式展开的视图设置动画
全方位的方式填满整个屏幕
UIView.animateWithDuration(1.0, delay: 0, options: nil, animations: {
?????
}, completion: nil)
图1:
你可以试试这个,我将持续时间设置为5秒,但你知道了
let viewWidth = view.frame.width
let viewHeight = view.frame.height
UIView.animate(withDuration: 5) {
subview.frame = CGRect(x: 0, y: 0, width: viewWidth, height: viewHeight)
}
看起来你需要玩音阶
class ViewController: UIViewController {
var subview:UIView!
@IBOutlet weak var animateButton:UIButton!
override func viewDidLoad() {
super.viewDidLoad()
subview = UIView()
subview.backgroundColor = .red
subview.frame = CGRect(x: 60, y: 200, width: 50, height: 50)
self.view.addSubview(subview)
self.view.bringSubview(toFront: animateButton)
}
@IBAction func animateButtonPressed(sender:UIButton) {
if(sender.tag == 0) {
let screenCenter = CGPoint(x:UIScreen.main.bounds.midX, y: UIScreen.main.bounds.midY)
let subviewCenter = self.view.convert(self.subview.center, to: self.view)
let offset = UIOffset(horizontal: screenCenter.x-subviewCenter.x, vertical: screenCenter.y-subviewCenter.y)
let widthScale = UIScreen.main.bounds.size.width/subview.frame.size.width
let heightScale = UIScreen.main.bounds.size.height/subview.frame.size.height
UIView.animate(withDuration: 1.0, animations: {
let scaleTransform = CGAffineTransform(scaleX: widthScale, y: heightScale)
let translateTransform = CGAffineTransform(translationX: offset.horizontal, y: offset.vertical)
self.subview.transform = scaleTransform.concatenating(translateTransform)
}, completion: { (finished) in
sender.tag = 1;
})
} else {
UIView.animate(withDuration: 1.0, animations: {
self.subview.transform = CGAffineTransform.identity
}, completion: { (finished) in
sender.tag = 0;
})
}
}
}
谢谢你的建议。这很简单。非常感谢。
class ViewController: UIViewController {
var subview:UIView!
@IBOutlet weak var animateButton:UIButton!
override func viewDidLoad() {
super.viewDidLoad()
subview = UIView()
subview.backgroundColor = .red
subview.frame = CGRect(x: 60, y: 200, width: 50, height: 50)
self.view.addSubview(subview)
self.view.bringSubview(toFront: animateButton)
}
@IBAction func animateButtonPressed(sender:UIButton) {
if(sender.tag == 0) {
let screenCenter = CGPoint(x:UIScreen.main.bounds.midX, y: UIScreen.main.bounds.midY)
let subviewCenter = self.view.convert(self.subview.center, to: self.view)
let offset = UIOffset(horizontal: screenCenter.x-subviewCenter.x, vertical: screenCenter.y-subviewCenter.y)
let widthScale = UIScreen.main.bounds.size.width/subview.frame.size.width
let heightScale = UIScreen.main.bounds.size.height/subview.frame.size.height
UIView.animate(withDuration: 1.0, animations: {
let scaleTransform = CGAffineTransform(scaleX: widthScale, y: heightScale)
let translateTransform = CGAffineTransform(translationX: offset.horizontal, y: offset.vertical)
self.subview.transform = scaleTransform.concatenating(translateTransform)
}, completion: { (finished) in
sender.tag = 1;
})
} else {
UIView.animate(withDuration: 1.0, animations: {
self.subview.transform = CGAffineTransform.identity
}, completion: { (finished) in
sender.tag = 0;
})
}
}
}