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我想为后面的背景图片设置动画效果,当它到达时它应该再次上升。我想只动画一个图像。不知何故,当我运行代码时图像不可见。图像尺寸如下宽度:375和高度:666动画背景图片使用Swift连续循环使用,UIKit
这里是图像
这里是代码
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var myView: UIView!
var water:UIImageView!
var hover:CABasicAnimation!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
water = UIImageView(image: UIImage(named: "water"))
water.frame = CGRect(x: 0, y: 0, width: 375.0, height: 666.0)
water.contentMode = .scaleAspectFill
UIView.animate(withDuration: 4.0, delay: 0, options: UIViewAnimationOptions.curveLinear, animations: {
self.water.frame.origin.y = self.view.bounds.height + self.water.frame.height - 50
}, completion: nil)
self.view.insertSubview(water, aboveSubview: myView)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
嗨。请检查我的答案。它工作吗? –