我如何在标签栏项目上添加自定义视图
How i can add custom view on tab bar item
我需要在标签栏项目上添加两条垂直线。我该怎么做?谢谢
添加下一个代码:
var imageLeft: UIImageView?
var imageRight: UIImageView?
override func viewDidLoad() {
super.viewDidLoad()
let grayColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0)
let leftLine = (tabBar.frame.width/2) - ((tabBar.frame.width/5)/2)
let rightLine = (tabBar.frame.width/2) + ((tabBar.frame.width/5)/2)
imageLeft = UIImageView(image: createImage(color: grayColor, size: tabBar.frame.size, x: leftLine))
imageRight = UIImageView(image: createImage(color: grayColor, size: tabBar.frame.size, x: rightLine))
tabBar.addSubview(imageLeft!)
tabBar.addSubview(imageRight!)
}
func createImage(color: UIColor, size: CGSize, x: CGFloat) -> UIImage {
let rect: CGRect = CGRect(x: x, y: 5, width: 1, height: tabBar.frame.height - 11)
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(rect)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
我的结果:
您需要使用自定义标签栏。
这是一个关于如何制作的教程:https://github.com/codepath/ios_guides/wiki/Creating-a-Custom-Tab-Bar
或者您可以在 Github
上找到可以为您完成此操作的图书馆
为此,您可以子类化 UITabBarController 并在您希望的位置添加一个 UIImageView:
class TabBarController: UITabBarController {
var image: UIImageView?
override func viewDidLoad() {
super.viewDidLoad()
image = UIImageView(image: createImage(color: UIColor(red:0.18, green:0.66, blue:0.24, alpha:1.0), size: tabBarItemSize, lineHeight: 4))
tabBar.addSubview(image!)
}
func createImage(color: UIColor, size: CGSize, lineHeight: CGFloat) -> UIImage {
let rect: CGRect = CGRect(x: 0, y: size.height - lineHeight, width: size.width, height: lineHeight )
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(rect)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
}
您需要根据需要修改此设置并计算您希望它所在的位置,但这应该会有所帮助。我在 an article I wrote.
中进一步阐述了这一点
我需要在标签栏项目上添加两条垂直线。我该怎么做?谢谢
添加下一个代码:
var imageLeft: UIImageView?
var imageRight: UIImageView?
override func viewDidLoad() {
super.viewDidLoad()
let grayColor = UIColor(red: 170/255, green: 170/255, blue: 170/255, alpha: 1.0)
let leftLine = (tabBar.frame.width/2) - ((tabBar.frame.width/5)/2)
let rightLine = (tabBar.frame.width/2) + ((tabBar.frame.width/5)/2)
imageLeft = UIImageView(image: createImage(color: grayColor, size: tabBar.frame.size, x: leftLine))
imageRight = UIImageView(image: createImage(color: grayColor, size: tabBar.frame.size, x: rightLine))
tabBar.addSubview(imageLeft!)
tabBar.addSubview(imageRight!)
}
func createImage(color: UIColor, size: CGSize, x: CGFloat) -> UIImage {
let rect: CGRect = CGRect(x: x, y: 5, width: 1, height: tabBar.frame.height - 11)
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(rect)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
我的结果:
您需要使用自定义标签栏。 这是一个关于如何制作的教程:https://github.com/codepath/ios_guides/wiki/Creating-a-Custom-Tab-Bar
或者您可以在 Github
上找到可以为您完成此操作的图书馆为此,您可以子类化 UITabBarController 并在您希望的位置添加一个 UIImageView:
class TabBarController: UITabBarController {
var image: UIImageView?
override func viewDidLoad() {
super.viewDidLoad()
image = UIImageView(image: createImage(color: UIColor(red:0.18, green:0.66, blue:0.24, alpha:1.0), size: tabBarItemSize, lineHeight: 4))
tabBar.addSubview(image!)
}
func createImage(color: UIColor, size: CGSize, lineHeight: CGFloat) -> UIImage {
let rect: CGRect = CGRect(x: 0, y: size.height - lineHeight, width: size.width, height: lineHeight )
UIGraphicsBeginImageContextWithOptions(size, false, 0)
color.setFill()
UIRectFill(rect)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
}
您需要根据需要修改此设置并计算您希望它所在的位置,但这应该会有所帮助。我在 an article I wrote.
中进一步阐述了这一点