本文主要是针对一些系统的控件进行扩展
下面简单介绍一些常用的方法,代码在后面
HWTextView
为TextView 添加占位文字
使用方法一:代码创建
let tv = HWTextView()
tv.frame = CGRect.init(x: 100, y: 100, width: 100, height: 100)
tv.placeholder = "请输入"
self.view.addSubview(tv)
使用方法二:Xib中使用
1.xib中修改Class类型(如下图)
2.设置placeholder 即可
override func awakeFromNib() {
tv.placeholder = "请输入"
}
image.png
UIColor+HWExtension介绍
方法:HWColorWithHexString(hex:String,alpha:CGFloat)
说明:16进制转颜色 hex: 16进制 alpha:透明度
使用:UIColor.HWColorWithHexString(hex: "29D8A5", alpha: 1)
UIView+HWExtension介绍
方法:addRounded(radius:CGFloat)
说明:添加圆角 radius: 圆角半径
使用:view.addRounded(radius: view. height/2)
方法:addBorder(width : CGFloat)
addBorder(width : CGFloat, borderColor : UIColor)
说明:添加边框 width: 边框宽度 borderColor:边框颜色(没有默认是黑色)
使用: addBorder(width: 1)
UIButton+HWExtension介绍
方法:init(setImage:String, frame:CGRect, action: @escaping buttonClick)
说明:快速创建按钮 setImage: 图片名 frame:frame action:点击事件的回调
使用:
let btn = UIButton.init(setImage: "相机icon", frame: CGRect.init(x: 0, y: 0, width: 44, height: 44),action: {
...// 点击按钮的回调
})
方法:countDown(count: Int,countDownBgColor:UIColor)
说明:倒计时 count:多少秒 countDownBgColor:倒计时背景颜色
使用:btn.countDown(count: 30, countDownBgColor: 你想要点颜色)
UIViewController+HWExtension介绍
方法:pushSetController(name:String)
说明:快速push到指定控制器 name:控制器名
使用:self.pushController(name:"你要跳转的控制器名字")
方法:popToViewController(name:String)
说明:快速返回指定的控制器 name:要返回的控制器名 (注意:要返回的控制器必须在navigationController的子控制器数组中)
使用: popToViewController(name:"你要返回的控制器名字")
方法:setNavigationBarBackgroundColor(colorHex: String)
说明:修改导航栏的背景颜色 colorHex:颜色的16进制
使用:
override func viewWillAppear(_ animated: Bool) {
setNavigationBarBackgroundColor(colorHex: "9AE6A9")
}
override func viewWillDisappear(_ animated: Bool) {
setNavigationBarBackgroundColor(colorHex: "29D8A5")
}
代码区
UIColor+HWExtension 实现
import UIKit
extension UIColor{
/// 16进制转颜色 hex: 16进制 alpha:透明度
class func HWColorWithHexString(hex:String,alpha:CGFloat) -> UIColor {
var cString = hex.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines).uppercased()
if cString.hasPrefix("#") {
let index = cString.index(after: cString.startIndex)
cString = cString.substring(from: index)
}
if cString.characters.count != 6 {
return UIColor.black
}
let rRange = cString.startIndex ..< cString.index(cString.startIndex, offsetBy: 2)
let rString = cString.substring(with: rRange)
let gRange = cString.index(cString.startIndex, offsetBy: 2) ..< cString.index(cString.startIndex, offsetBy: 4)
let gString = cString.substring(with: gRange)
let bRange = cString.index(cString.startIndex, offsetBy: 4) ..< cString.index(cString.startIndex, offsetBy: 6)
let bString = cString.substring(with: bRange)
var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0
Scanner(string: rString).scanHexInt32(&r)
Scanner(string: gString).scanHexInt32(&g)
Scanner(string: bString).scanHexInt32(&b)
return UIColor(red: CGFloat(r)/255.0, green: CGFloat(g)/255.0, blue: CGFloat(b)/255.0, alpha: alpha)
}
}
UIView+HWExtension实现
import UIKit
public extension UIView{
// MARK: - 尺寸相关
var x:CGFloat{
get{
return self.frame.origin.x
} set{
self.frame.origin.x = newValue
}
}
var y:CGFloat{
get{
return self.frame.origin.y
}set{
self.frame.origin.y = newValue
}
}
var width:CGFloat{
get{
return self.frame.size.width
}set{
self.frame.size.width = newValue
}
}
var height:CGFloat{
get{
return self.frame.size.height
}set{
self.frame.size.height = newValue
}
}
var size:CGSize{
get{
return self.frame.size
}set{
self.frame.size = newValue
}
}
var centerX:CGFloat{
get{
return self.center.x
}set{
self.centerX = newValue
}
}
var centerY:CGFloat{
get{
return self.center.y
}set{
self.centerY = newValue
}
}
// MARK: - 尺寸裁剪相关
/// 添加圆角 radius: 圆角半径
func addRounded(radius:CGFloat) {
self.layer.cornerRadius = radius
self.layer.masksToBounds = true
}
/// 添加部分圆角(有问题右边且不了) corners: 需要实现为圆角的角，可传入多个 radius: 圆角半径
func addRounded(radius:CGFloat, corners: UIRectCorner) {
let maskPath = UIBezierPath.init(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize.init(width: radius, height: radius))
let maskLayer = CAShapeLayer()
maskLayer.frame = self.bounds
maskLayer.path = maskPath.cgPath
self.layer.mask = maskLayer;
}
// MARK: - 添加边框
/// 添加边框 width: 边框宽度 默认黑色
func addBorder(width : CGFloat) { // 黑框
self.layer.borderWidth = width;
self.layer.borderColor = UIColor.black.cgColor;
}
/// 添加边框 width: 边框宽度 borderColor:边框颜色
func addBorder(width : CGFloat, borderColor : UIColor) { // 颜色自己给
self.layer.borderWidth = width;
self.layer.borderColor = borderColor.cgColor;
}
// 添加圆角和阴影
func addRoundedOrShadow(radius:CGFloat) {
self.layer.cornerRadius = radius
self.layer.shadowColor = UIColor.black.cgColor
self.layer.shadowOpacity = 0.1 // 不透明度
self.layer.shadowOffset = CGSize(width: 0, height: 0)
self.layer.shadowRadius = 1
self.layer.masksToBounds = false
}
}
UIButton+HWExtension(使用RxSwift来监听按钮点击事件的)
故需要pod 'RxSwift' #响应式编程库
import UIKit
import RxSwift
// MARK: - 快速设置按钮 并监听点击事件
private var disposeBag = DisposeBag()
typealias buttonClick = (()->()) // 定义数据类型(其实就是设置别名)
extension UIButton{
/// 快速创建按钮 setImage: 图片名 action:点击事件的回调
convenience init(setImage:String, action:@escaping buttonClick){
self.init()
self.frame = frame
self.setImage(UIImage(named:setImage), for: UIControlState.normal)
self.rx.tap.subscribe({ _ in
action()
}).disposed(by: disposeBag)
self.sizeToFit()
}
convenience init(titleString:String, action:@escaping buttonClick){
self.init()
self.frame = frame
self.setTitle(titleString, for: .normal)
self.rx.tap.subscribe({ _ in
action()
}).disposed(by: disposeBag)
self.sizeToFit()
}
/// 快速创建按钮 setImage: 图片名 frame:frame action:点击事件的回调
convenience init(setImage:String, frame:CGRect, action: @escaping buttonClick){
self.init( setImage: setImage, action: action)
self.frame = frame
}
/// 快速创建按钮 titleString:title frame:frame action:点击事件的回调
convenience init(titleString:String, frame:CGRect, action: @escaping buttonClick){
self.init(titleString: titleString, action: action)
self.frame = frame
}
}
// MARK: - 倒计时
extension UIButton{
// MARK:倒计时 count:多少秒 默认倒计时的背景颜色gray
/// 倒计时 count:多少秒 默认倒计时的背景颜色gray
public func countDown(count: Int){
self.countDown(count: count, countDownBgColor: UIColor.gray)
}
// MARK:倒计时 count:多少秒 countDownBgColor:倒计时背景颜色
/// 倒计时 count:多少秒 countDownBgColor:倒计时背景颜色
public func countDown(count: Int,countDownBgColor:UIColor){
// 倒计时开始,禁止点击事件
isEnabled = false
// 保存当前的背景颜色
let defaultColor = self.backgroundColor
// 设置倒计时,按钮背景颜色
backgroundColor = countDownBgColor
var remainingCount: Int = count {
willSet {
setTitle("重新发送(\(newValue))", for: .normal)
if newValue <= 0 {
setTitle("发送验证码", for: .normal)
}
}
}
// 在global线程里创建一个时间源
let codeTimer = DispatchSource.makeTimerSource(queue:DispatchQueue.global())
// 设定这个时间源是每秒循环一次，立即开始
codeTimer.schedule(deadline: .now(), repeating: .seconds(1))
// 设定时间源的触发事件
codeTimer.setEventHandler(handler: {
// 返回主线程处理一些事件，更新UI等等
DispatchQueue.main.async {
// 每秒计时一次
remainingCount -= 1
// 时间到了取消时间源
if remainingCount <= 0 {
self.backgroundColor = defaultColor
self.isEnabled = true
codeTimer.cancel()
}
}
})
// 启动时间源
codeTimer.resume()
}
}
UIViewController+HWExtension实现
import Foundation
import UIKit
extension UIViewController {
// MARK: - 设置相关
/// 快速设置背景颜色
func setBGColor() {
weak var weakSelf = self // 弱引用
weakSelf?.view.backgroundColor = HWBGColor()
}
func setBGColor(color:UIColor) {
weak var weakSelf = self // 弱引用
weakSelf?.view.backgroundColor = color
}
/// 快速设置title
func setTitle(title:String) {
weak var weakSelf = self // 弱引用
weakSelf?.title = title
}
// MARK: - 跳转相关
/// 快速push到指定控制器 name:控制器名
func pushController(name:String) {
_ = pushSetController(name: name)
}
func pushSetController(name:String) -> UIViewController {
weak var weakSelf = self // 弱引用
// 1.获取命名空间
guard let clsName = Bundle.main.infoDictionary!["CFBundleExecutable"] else {
return UIViewController()
}
// 2.通过命名空间和类名转换成类
let cls : AnyClass? = NSClassFromString((clsName as! String) + "." + name)
// swift 中通过Class创建一个对象,必须告诉系统Class的类型
guard let clsType = cls as? UIViewController.Type else {
return UIViewController()
}
// 3.通过Class创建对象
let vc = clsType.init()
weakSelf!.navigationController?.pushViewController(vc, animated: true)
return vc
}
/// 快速返回指定的控制器 name:要返回的控制器名 (注意:要返回的控制器必须在navigationController的子控制器数组中)
func popToViewController(name:String) { // 使用 self.popToViewController(name: "JYKMeViewController")
weak var weakSelf = self // 弱引用
// 1.获取命名空间
guard let clsName = Bundle.main.infoDictionary!["CFBundleExecutable"] else {
return
}
// 2.通过命名空间和类名转换成类
let cls : AnyClass? = NSClassFromString((clsName as! String) + "." + name)
// swift 中通过Class创建一个对象,必须告诉系统Class的类型
guard (cls as? UIViewController.Type) != nil else {
return
}
for controller in (weakSelf!.navigationController?.viewControllers)! {
if controller.isKind(of: cls!) {
weakSelf!.navigationController?.popToViewController(controller, animated: true)
}
}
}
/// 快速返回根的控制器
func popToRootViewController() {
weak var weakSelf = self // 弱引用
weakSelf!.navigationController?.popToRootViewController(animated: true)
}
func presentController(name:String) {
_ = presentSetController(name: name)
}
func presentSetController(name:String) -> UIViewController {
// 1.获取命名空间
guard let clsName = Bundle.main.infoDictionary!["CFBundleExecutable"] else {
return UIViewController()
}
// 2.通过命名空间和类名转换成类
let cls : AnyClass? = NSClassFromString((clsName as! String) + "." + name)
// swift 中通过Class创建一个对象,必须告诉系统Class的类型
guard let clsType = cls as? UIViewController.Type else {
return UIViewController()
}
// 3.通过Class创建对象
let vc = clsType.init()
let nav = BBCNavigationController(rootViewController: vc)
UIApplication.shared.keyWindow?.rootViewController?.present(nav, animated: true, completion: {
})
return vc
}
/// 修改导航栏的背景颜色 colorHex:颜色的16进制
func setNavigationBarBackgroundColor(colorHex: String) {
navigationController?.navigationBar.setBackgroundImage(getImageWithColor(color: UIColor.HWColorWithHexString(hex: colorHex, alpha: 1)), for: UIBarPosition.any, barMetrics: UIBarMetrics.default)
navigationController?.navigationBar.shadowImage = UIImage()
}
}