Ios 旋转时从子视图中删除渐变
我可以从子视图中移除渐变，但是如果在子视图中添加按钮，我就不能移除渐变层。如何在旋转时从子视图中删除渐变 以下是视图控制器的代码Ios 旋转时从子视图中删除渐变,ios,swift,gradient,layer,Ios,Swift,Gradient,Layer,我可以从子视图中移除渐变，但是如果在子视图中添加按钮，我就不能移除渐变层。如何在旋转时从子视图中删除渐变 以下是视图控制器的代码 import UIKit class ViewController: UIViewController { @IBOutlet weak var buttonOutlet: UIButton! @IBOutlet weak var labelOutlet: UILabel! @IBOutlet weak var mySubView: UIV
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var buttonOutlet: UIButton!
@IBOutlet weak var labelOutlet: UILabel!
@IBOutlet weak var mySubView: UIView!
@IBOutlet weak var mySubView2: UIView!
@IBOutlet weak var mySubView3: UIView!
override func viewDidLayoutSubviews() {
addGradient()
}
fileprivate func addGradient() {
mySubView.mainGradientBackground()
mySubView2.subGradientBackground()
mySubView3.subGradientBackground()
labelOutlet.labelTextfieldShadow()
buttonOutlet.buttonGradientBackground(cornerRadius: 10, shadowRadius: 3)
}
/// This will let you know when the device rotates.
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
if UIDevice.current.orientation.isValidInterfaceOrientation {
removeSublayer(mySubView, layerIndex: 0)
removeSublayer(mySubView, layerIndex: 0)
removeSublayer(mySubView2, layerIndex: 0)
removeSublayer(mySubView2, layerIndex: 0)
removeSublayer(mySubView3, layerIndex: 0)
removeSublayer(mySubView3, layerIndex: 0)
removeSublayer(buttonOutlet, layerIndex: 0)
removeSublayer(buttonOutlet, layerIndex: 0)
removeSublayer(labelOutlet, layerIndex: 0)
}
}
func removeSublayer(_ view: UIView, layerIndex index: Int) {
guard let sublayers = view.layer.sublayers else {
print("The view does not have any sublayers.")
return
}
if sublayers.count > index {
view.layer.sublayers!.remove(at: index)
} else {
print("There are not enough sublayers to remove that index.")
}
}
}
import Foundation
import UIKit
extension UIView {
/// Use this to set a gradient for the background.
/// = This is a gradient with no shadow.
func mainGradientBackground() {
let color = Color()
let leading = color.backgroundLeading
let trailing = color.backgroundTrailing
let gradientLayer = CAGradientLayer()
gradientLayer.frame = bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
layer.insertSublayer(gradientLayer, at: 0)
}
/// Use this to set a gradient for the background.
/// = This is a gradient with a shadow.
func subGradientBackground() {
let corner: CGFloat = 15
let color = Color()
let leading = color.subBackgroundLeading
let trailing = color.subBackgroundTrailing
let borderColor = color.subBorderColor
let gradientLayer = CAGradientLayer()
gradientLayer.frame = bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 4
gradientLayer.cornerRadius = corner
layer.insertSublayer(gradientLayer, at: 0)
let subLayer = CALayer()
subLayer.frame = bounds
subLayer.shadowPath = UIBezierPath(roundedRect: bounds, cornerRadius: corner - 2).cgPath
subLayer.shadowColor = UIColor.red.cgColor
subLayer.shadowOpacity = 1
subLayer.shadowRadius = 2
subLayer.shadowOffset = CGSize(width: 3, height: 4)
layer.insertSublayer(subLayer, at: 0)
}
/// Use this to set a gradient for the background.
/// = This is a gradient with a shadow.
func subGradientBackgroundShadow() {
let corner: CGFloat = 15
let subLayer = CALayer()
subLayer.frame = bounds
subLayer.shadowPath = UIBezierPath(roundedRect: bounds, cornerRadius: corner - 2).cgPath
subLayer.shadowColor = UIColor.red.cgColor
subLayer.shadowOpacity = 1
subLayer.shadowRadius = 2
subLayer.shadowOffset = CGSize(width: 3, height: 4)
layer.insertSublayer(subLayer, at: 0)
}
/// LabelShadow
/// - Parameter masksToBounds: Keep the layer in its bound
/// - Exp.. Set to true to keep text in textview in its frame.
/// - Exp.. Set to false to let shadow out side the frame.
/// - Defalr corner radius is 7
func labelTextfieldShadow() {
let color = Color()
let dark = color.labelBackgroundDark
let borderColor = color.labelBorderColor
layer.masksToBounds = false
layer.borderWidth = 0.5
layer.borderColor = borderColor
layer.cornerRadius = 7
self.backgroundColor = dark
layer.shadowRadius = 7
layer.shadowColor = UIColor.black.cgColor
layer.shadowOffset = CGSize(width: 3, height: 3)
layer.shadowOpacity = 0.6
}
/// Button gradient
/// - Parameter cornerRadius: Set the radius of the button. Use outlet height / 2
/// - Parameter shadowRadius: Set the shadow radius. 2
func buttonGradientBackground(cornerRadius: CGFloat, shadowRadius: CGFloat) {
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
let gradientLayer = CAGradientLayer()
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = cornerRadius
layer.insertSublayer(gradientLayer, at: 0)
let subLayer = CALayer()
subLayer.frame = bounds
subLayer.shadowPath = UIBezierPath(roundedRect: bounds, cornerRadius: cornerRadius - 2).cgPath
subLayer.shadowColor = UIColor.black.cgColor
subLayer.shadowOpacity = 1
subLayer.shadowRadius = shadowRadius
subLayer.shadowOffset = CGSize(width: 2, height: 3)
layer.insertSublayer(subLayer, at: 0)
}
}
struct Color {
// Use these colors to style the main background.
/// This color is used for the main view's background leading greadient color.
let backgroundLeading = #colorLiteral(red: 0.2745098039, green: 0.231372549, blue: 0.231372549, alpha: 1).cgColor
/// TThis color is used for the main view's background trailing greadient color.
let backgroundTrailing = #colorLiteral(red: 0.2784313725, green: 0.2352941176, blue: 0.2352941176, alpha: 1).cgColor
// Use these colors to style the sub view.
/// This color is used for the sub view's leading greadient color.
let subBackgroundLeading = #colorLiteral(red: 0.1960784314, green: 0.2549019608, blue: 0.2549019608, alpha: 1).cgColor
/// This color is used for the sub view's trailing greadient color.
let subBackgroundTrailing = #colorLiteral(red: 0.1012082246, green: 0.2111029723, blue: 0.1947238818, alpha: 1).cgColor
/// This color is used for the sub view's border.
let subBorderColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1).cgColor
// Use these colors to style the labels.
/// This color is used for editing text background.
let labelBackgroundLight = #colorLiteral(red: 0.921431005, green: 0.9214526415, blue: 0.9214410186, alpha: 1) as UIColor
/// This color is used for disabled text background.
let labelBackgroundDark = #colorLiteral(red: 0.1843137255, green: 0.137254902, blue: 0.1384684741, alpha: 1) as UIColor
/// This color is used for the label's border.
let labelBorderColor = #colorLiteral(red: 0.6, green: 0.6, blue: 0.6, alpha: 1).cgColor
// Use these colors to style the buttons.
/// This color is used for the button's leading greadient color.
let buttonLeading = #colorLiteral(red: 0.1960784314, green: 0.2549019608, blue: 0.2549019608, alpha: 1).cgColor
/// This color is used for the button's middle greadient color.
let buttonMiddle = #colorLiteral(red: 0.2, green: 0.2, blue: 0.2, alpha: 1).cgColor
/// This color is used for the button's trailing greadient color.
let buttonTrailing = #colorLiteral(red: 0.1012082246, green: 0.2111029723, blue: 0.1947238818, alpha: 1).cgColor
/// This color is used for the button's border color.
let buttonBorderColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1).cgColor
// Use these colors for the text
/// This color is used for the deiabled label and text field.
let labelDisableColor = #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1)
/// This color is used for the enabled label and text field.
let labelEnableColor = #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
/// The text color white.
let labelWhiteTextColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
/// The text color Black
let labelBlackTextColor = #colorLiteral(red: 0, green: 0, blue: 0, alpha: 1)
}
与其假设某个层位于给定的索引，不如将要删除的LATER保留为实例变量（或在Calayer数组中），然后告诉该层从其超级层删除 例如：
var layersToRemoveLater = [CALayer]()
...
layersToRemoveLater.append(someLayer)
layersToRemoveLater.append(someOtherLayer)
...
layersToRemoveLater.forEach { $0.removeFromSuperLayer() }
与其假设某个层位于给定的索引，不如将要删除的LATER保留为实例变量（或在Calayer数组中），然后告诉该层从其超级层删除 例如：
var layersToRemoveLater = [CALayer]()
...
layersToRemoveLater.append(someLayer)
layersToRemoveLater.append(someOtherLayer)
...
layersToRemoveLater.forEach { $0.removeFromSuperLayer() }
实现这一点的方法是将每个扩展都更改为一个类。随着扩展，你必须照顾自己的所有布局。通过使用这些作为一个类，您可以设置每个按钮，子视图等。。。在情节提要中，视图本身将以这种方式重新绘制布局
/// Use this to set a greadient for the background.
/// = This is a greadient with no shadow.
class MainGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.backgroundLeading
let trailing = color.backgroundTrailing
gradientLayer.frame = bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with a shadow.
class SubGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let corner: CGFloat = 15
let color = Color()
let leading = color.subBackgroundLeading
let trailing = color.subBackgroundTrailing
let borderColor = color.subBorderColor
gradientLayer.frame = self.bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 0.4
gradientLayer.cornerRadius = corner
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 3, height: 4)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with no shadow.
class TabBarGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = self.frame.width / 50
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with a shadow.
class ButtonGradientView: UIButton {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = self.frame.height / 2
self.layer.frame = bounds
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 2, height: 3)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the keypad switch.
/// = This is a greadient with a shadow.
class SwitchGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = 9
self.layer.frame = bounds
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 2, height: 3)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
实现这一点的方法是将每个扩展都更改为一个类。随着扩展，你必须照顾自己的所有布局。通过使用这些作为一个类，您可以设置每个按钮，子视图等。。。在情节提要中，视图本身将以这种方式重新绘制布局
/// Use this to set a greadient for the background.
/// = This is a greadient with no shadow.
class MainGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.backgroundLeading
let trailing = color.backgroundTrailing
gradientLayer.frame = bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with a shadow.
class SubGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let corner: CGFloat = 15
let color = Color()
let leading = color.subBackgroundLeading
let trailing = color.subBackgroundTrailing
let borderColor = color.subBorderColor
gradientLayer.frame = self.bounds
gradientLayer.colors = [leading, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 0.4
gradientLayer.cornerRadius = corner
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 3, height: 4)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with no shadow.
class TabBarGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = self.frame.width / 50
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the background.
/// = This is a greadient with a shadow.
class ButtonGradientView: UIButton {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = self.frame.height / 2
self.layer.frame = bounds
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 2, height: 3)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}
/// Use this to set a greadient for the keypad switch.
/// = This is a greadient with a shadow.
class SwitchGradientView: UIView {
override init(frame: CGRect) {
super.init(frame: frame)
setupView()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setupView()
}
private func setupView() {
autoresizingMask = [.flexibleWidth, .flexibleHeight]
guard let gradientLayer = self.layer as? CAGradientLayer else {
return;
}
let color = Color()
let leading = color.buttonLeading
let middle = color.buttonMiddle
let trailing = color.buttonTrailing
let borderColor = color.buttonBorderColor
gradientLayer.frame = bounds
gradientLayer.colors = [leading, middle, trailing]
gradientLayer.locations = [0,0.3,1]
gradientLayer.startPoint = CGPoint(x: 0.05, y: 0.5)
gradientLayer.endPoint = CGPoint(x: 0.75, y: 0.5)
gradientLayer.borderColor = borderColor
gradientLayer.borderWidth = 1
gradientLayer.cornerRadius = 9
self.layer.frame = bounds
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 1
self.layer.shadowRadius = 2
self.layer.shadowOffset = CGSize(width: 2, height: 3)
}
override class var layerClass: AnyClass {
return CAGradientLayer.self
}
}