我以前使用过一些解决方案。以下来自stackoverflow的代码有帮助,但当前点显示的大小不会大于其余部分(尽管名为:“ currentPageDot”的图像大于UIImage(名为:“ defaultPageDot”))。我也不想在他们变大时打扰他们的位置。我应该如何修改此代码以执行相同的操作。
外观:
外观如何:
import Foundation
import UIKit
class EnhancedPageControl: UIPageControl {
let activeImage:UIImage = UIImage(named: "currentPageDot")!
let inactiveImage:UIImage = UIImage(named: "defaultPageDot")!
override func awakeFromNib() {
super.awakeFromNib()
self.pageIndicatorTintColor = UIColor.clear
self.currentPageIndicatorTintColor = UIColor.clear
self.clipsToBounds = false
}
func updateDots() {
var i = 0
for view in self.subviews {
if let imageView = self.imageForSubview(view) {
if i == self.currentPage {
imageView.image = nil
imageView.image = self.activeImage
} else {
imageView.image = nil
imageView.image = self.inactiveImage
}
i = i + 1
} else {
var dotImage = self.inactiveImage
if i == self.currentPage {
dotImage = self.activeImage
}
view.clipsToBounds = false
view.addSubview(UIImageView(image:dotImage))
i = i + 1
}
}
}
fileprivate func imageForSubview(_ view:UIView) -> UIImageView? {
var dot:UIImageView?
if let dotImageView = view as? UIImageView {
dot = dotImageView
} else {
for foundView in view.subviews {
if let imageView = foundView as? UIImageView {
dot = imageView
break
}
}
}
return dot
}
}
答案 0 :(得分:0)
尝试不更改图像,而是在页面控件子视图上使用transform属性。像这样
pageControl.subviews[pageControl.currentPage].transform = CGAffineTransform(scaleX: 1.5, y: 1.5)