57.TabBar和NVBar的背景和阴影颜色设置
2018-09-21 本文已影响12人
noonez
class CustomTabBarController: UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//设置tabbar的背景和阴影图片
tabBar.backgroundImage = UIImage()
tabBar.shadowImage = drawShadowLine(height: 1, color: UIColor.green)
}
func drawShadowLine(height:CGFloat, color:UIColor)->UIImage? {
UIGraphicsBeginImageContextWithOptions(CGSize(width: UIScreen.main.bounds.width, height: height), false, UIScreen.main.scale)
if let context = UIGraphicsGetCurrentContext() {
context.setFillColor(color.cgColor)
context.fill(CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: height))
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
return nil
}
}
class CustomNVController: UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationBar.shadowImage = drawShadowLine(height: 1, color: UIColor.red)
}
func drawShadowLine(height:CGFloat, color:UIColor)->UIImage? {
UIGraphicsBeginImageContextWithOptions(CGSize(width: UIScreen.main.bounds.width, height: height), false, UIScreen.main.scale)
if let context = UIGraphicsGetCurrentContext() {
context.setFillColor(color.cgColor)
context.fill(CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: height))
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
return nil
}
}