我在你的 pipe 上看过这个视频 https://www.youtube.com/watch?v=rNy6aQQYbuY 但问题是导航栏颜色不会将颜色更改为我想要的正确颜色
下面是代码
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.navigationBar.tintColor = .white
if #available(iOS 11.0, *) {
self.profileTV.contentInsetAdjustmentBehavior = .never
} else {
automaticallyAdjustsScrollViewInsets = false
}
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
print(scrollView.contentOffset.y)
var offset = scrollView.contentOffset.y / 150
if offset > 1 {
offset = 1
let color = UIColor(red: 181, green: 40, blue: 56, alpha: offset)
self.navigationController?.navigationBar.backgroundColor = color
UIApplication.shared.statusBarView?.backgroundColor = color
} else {
let color = UIColor(red: 181, green: 40, blue: 56, alpha: offset)
self.navigationController?.navigationBar.backgroundColor = color
UIApplication.shared.statusBarView?.backgroundColor = color
}
}
extension UIApplication {
var statusBarView: UIView? {
return value(forKey: "statusBar") as? UIView
}
}
滚动后的颜色会是白色,但我想成为我在代码中写的颜色代码
最佳答案
将您的代码更改为:
func setNavigation() {
if #available(iOS 11.0, *) {
self.tV.contentInsetAdjustmentBehavior = .never
} else {
automaticallyAdjustsScrollViewInsets = false
}
self.navigationController?.navigationBar.tintColor = .red
self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
var offset = scrollView.contentOffset.y / 1500
if offset >= 1 {
offset = 1
self.navigationController?.navigationBar.backgroundColor = UIColor.white.withAlphaComponent(offset)
// self.navigationController?.navigationBar.alpha = offset
// print(offset - 0.399)
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red.withAlphaComponent(offset)
} else {
self.navigationController?.navigationBar.backgroundColor = UIColor.white.withAlphaComponent(offset)
UIApplication.shared.statusBarView?.backgroundColor = UIColor.red.withAlphaComponent(offset)
}
}
关于ios - 当 tableview 在 swift 4 中滚动时,导航栏背景颜色会变成错误的颜色,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55022929/