Swift 常用的Extension
2019-10-19 本文已影响0人
绍清_shao
内容
- 颜色UIColor+Extension
- hex & rgb
- UIView+Extension
- 方便设置Frame
- 方便在Storyboard中设置Layer层
- UIViewController+Extension
- 查找顶层控制器
- String+Extension
- 常用正则表达式
颜色UIColor+Extension
- hex & rgb
extension UIColor {
// 系统色
static let theme: UIColor = UIColor.hexString("#4286F6")
}
extension UIColor {
static func hexString(_ hex:String) -> UIColor {
var cString:String = hex.trimmingCharacters(in: .whitespacesAndNewlines).uppercased()
if (cString.hasPrefix("#")) {
cString.remove(at: cString.startIndex)
}
if ((cString.count) != 6) {
return UIColor.gray
}
var rgbValue:UInt32 = 0
Scanner(string: cString).scanHexInt32(&rgbValue)
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
// UIColor.hexString("#2D73F1")
static func fromRGB(_ rgbValue: UInt) -> UIColor {
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
// UIColor.fromRGB(0x209624)
}
UIView+Extension
- 方便设置Frame
// Frame
extension UIView {
var width: CGFloat {
get { return self.frame.size.width }
set {
var frame = self.frame
frame.size.width = newValue
self.frame = frame
}
}
var height: CGFloat {
get { return self.frame.size.height }
set {
var frame = self.frame
frame.size.height = newValue
self.frame = frame
}
}
var size: CGSize {
get { return self.frame.size }
set {
var frame = self.frame
frame.size = newValue
self.frame = frame
}
}
var origin: CGPoint {
get { return self.frame.origin }
set {
var frame = self.frame
frame.origin = newValue
self.frame = frame
}
}
var x: CGFloat {
get { return self.frame.origin.x }
set {
var frame = self.frame
frame.origin.x = newValue
self.frame = frame
}
}
var y: CGFloat {
get { return self.frame.origin.y }
set {
var frame = self.frame
frame.origin.y = newValue
self.frame = frame
}
}
var centerX: CGFloat {
get { return self.center.x }
set {
self.center = CGPoint(x: newValue, y: self.center.y)
}
}
var centerY: CGFloat {
get { return self.center.y }
set {
self.center = CGPoint(x: self.center.x, y: newValue)
}
}
var top : CGFloat {
get { return self.frame.origin.y }
set {
var frame = self.frame
frame.origin.y = newValue
self.frame = frame
}
}
var bottom : CGFloat {
get { return frame.origin.y + frame.size.height }
set {
var frame = self.frame
frame.origin.y = newValue - self.frame.size.height
self.frame = frame
}
}
var right : CGFloat {
get { return self.frame.origin.x + self.frame.size.width }
set {
var frame = self.frame
frame.origin.x = newValue - self.frame.size.width
self.frame = frame
}
}
var left : CGFloat {
get { return self.frame.origin.x }
set {
var frame = self.frame
frame.origin.x = newValue
self.frame = frame
}
}
}
- 方便在Storyboard中设置Layer层，圆角、边框、边框宽度和颜色等
// 设置圆角、边框
extension UIView {
@IBInspectable var cornerRadius: CGFloat {
get {
return layer.cornerRadius
}
set {
layer.cornerRadius = newValue
layer.masksToBounds = newValue > 0
}
}
@IBInspectable var borderColor: UIColor {
get {
return UIColor.init(cgColor: layer.borderColor ??
UIColor.white.cgColor)
}
set {
layer.borderColor = newValue.cgColor
}
}
@IBInspectable var borderWidth: CGFloat {
get {
return layer.borderWidth
}
set {
layer.borderWidth = newValue
}
}
}
效果：
UIViewController+Extension
- 查找顶层控制器
extension UIViewController {
// MARK: - 查找顶层控制器、
// 获取顶层控制器 根据window
func getTopVC() -> (UIViewController?) {
var window = UIApplication.shared.keyWindow
//是否为当前显示的window
if window?.windowLevel != UIWindow.Level.normal{
let windows = UIApplication.shared.windows
for windowTemp in windows{
if windowTemp.windowLevel == UIWindow.Level.normal{
window = windowTemp
break
}
}
}
let vc = window?.rootViewController
return getTopVC(withCurrentVC: vc)
}
///根据控制器获取 顶层控制器
func getTopVC(withCurrentVC VC :UIViewController?) -> UIViewController? {
if VC == nil {
print("🌶： 找不到顶层控制器")
return nil
}
if let presentVC = VC?.presentedViewController {
//modal出来的 控制器
return getTopVC(withCurrentVC: presentVC)
}else if let tabVC = VC as? UITabBarController {
// tabBar 的跟控制器
if let selectVC = tabVC.selectedViewController {
return getTopVC(withCurrentVC: selectVC)
}
return nil
} else if let naiVC = VC as? UINavigationController {
// 控制器是 nav
return getTopVC(withCurrentVC:naiVC.visibleViewController)
} else {
// 返回顶控制器
return VC
}
}
}
String+Extension
- 常用正则表达式
extension String {
/// 正则匹配手机号
var isMobile: Bool {
/**
* 手机号码
* 移动：134 135 136 137 138 139 147 148 150 151 152 157 158 159 165 172 178 182 183 184 187 188 198
* 联通：130 131 132 145 146 155 156 166 171 175 176 185 186
* 电信：133 149 153 173 174 177 180 181 189 199
* 虚拟：170
*/
return isMatch("^(1[3-9])\\d{9}$")
}
/// 正则匹配用户身份证号15或18位
var isUserIdCard: Bool {
return isMatch("(^[0-9]{15}$)|([0-9]{17}([0-9]|X)$)")
}
/// 正则匹配用户密码6-12位数字和字母组合
var isPassword: Bool {
return isMatch("^(?![0-9]+$)(?![a-zA-Z]+$)[a-zA-Z0-9]{6,12}")
}
/// 正则匹配URL
var isURL: Bool {
return isMatch("^[0-9A-Za-z]{1,50}")
}
/// 正则匹配用户姓名,20位的中文或英文
var isUserName: Bool {
return isMatch("^[a-zA-Z\\u4E00-\\u9FA5]{1,20}")
}
/// 正则匹配用户email
var isEmail: Bool {
return isMatch("[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}")
}
/// 判断是否都是数字
var isNumber: Bool {
return isMatch("^[0-9]*$")
}
/// 只能输入由26个英文字母组成的字符串
var isLetter: Bool {
return isMatch("^[A-Za-z]+$")
}
private func isMatch(_ pred: String ) -> Bool {
let pred = NSPredicate(format: "SELF MATCHES %@", pred)
let isMatch: Bool = pred.evaluate(with: self)
return isMatch
}
}
