// 那么在Swift中如何对常用的工具方法进行定义呢？ Swift中不支持#define语法，只能依赖Swift自身的特性来实现:

在OC中我们通常使用宏定义来实现全局常量的表示，而swift中宏定义这个说法已经取缔了，一般的有如下几种方式： 1. 常量 2. 全局函数 3. 计算属性 4. 闭包类型的常量

// MARK:- 日志打印

//开发的时候打印，但是发布的时候不打印,使用方法，输入 print(message: "输入")

  func print<T>(message: T, fileName: String = #file, methodName: String = #function, lineNumber: Int = #line) {
      #if DEBUG
      //获取当前时间
      let now = Date()
      // 创建一个日期格式器
      let dformatter = DateFormatter()
      dformatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSS"
      // 要把路径最后的字符串截取出来
      let lastName = ((fileName as NSString).pathComponents.last!)
      print("\(dformatter.string(from: now)) [\(lastName)][第\(lineNumber)行] \n\t\t \(message)")
      #endif
  }

// MARK:- 沙盒相关

//获取沙盒Document路径
let kDocumentPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first
//获取沙盒Cache路径
let kCachePath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true).first
//获取沙盒temp路径
let kTempPath = NSTemporaryDirectory()

// MARK:- UserDefaults 操作

    let kUserDefaults = UserDefaults.standard
    func kUserDefaultsRead(_ KeyStr: String) -> String {
        return kUserDefaults.string(forKey: KeyStr)!
    }
    func kUserDefaultsWrite(_ obj: Any, _ KeyStr: String) {
        kUserDefaults.set(obj, forKey: KeyStr)
    }
    func kUserValue(_ A: String) -> Any? {
        return kUserDefaults.value(forKey: A)
    }

// MARK:- 颜色

func kRGBAColor(_ r: CGFloat,_ g: CGFloat,_ b: CGFloat,_ a: CGFloat) -> UIColor {
    return UIColor.init(red: r, green: g, blue: b, alpha: a)
}
func kRGBColor(_ r: CGFloat,_ g: CGFloat,_ b: CGFloat) -> UIColor {
    return UIColor.init(red: r, green: g, blue: b, alpha: 1.0)
}
func kHexColorA(_ HexString: String,_ a: CGFloat) ->UIColor {
    return UIColor.colorWith(hexString: HexString, alpha: a)
}
func kHexColor(_ HexString: String) ->UIColor {
    return UIColor.colorWith(hexString: HexString)
}
// 通用颜色值

let kBackGroundColor = kHexColor("f0f0f0")

//字体 字号

func kFontSize(_ a: CGFloat) -> UIFont {
    return UIFont.systemFont(ofSize: a)
}
func kFontBoldSize(_ a: CGFloat) -> UIFont {
    return UIFont.boldSystemFont(ofSize: a)
}
func kFontForIPhone5or6Size(_ a: CGFloat, _ b: CGFloat) -> UIFont {
    return kUI_IPHONE5 ? kFontSize(a) : kFontSize(b)
}

// MARK:- 获取屏幕大小

let kUIScreenSize = UIScreen.main.responds(to: #selector(getter: UIScreen.nativeBounds)) ? CGSize(width: UIScreen.main.nativeBounds.size.width / UIScreen.main.nativeScale, height: UIScreen.main.nativeBounds.size.height / UIScreen.main.nativeScale) : UIScreen.main.bounds.size
let kUIScreenWidth = kUIScreenSize.width
let kUIScreenHeight = kUIScreenSize.height
let kUIScreenBounds = UIScreen.main.bounds

//APP版本号

let kAppVersion = Bundle.main.infoDictionary?["CFBundleShortVersionString"]
//当前系统版本号
let kVersion = (UIDevice.current.systemVersion as NSString).floatValue
//检测用户版本号
let kiOS12 = (kVersion >= 12.0)
let kiOS11 = (kVersion >= 11.0 && kVersion < 12.0)
let kiOS10 = (kVersion >= 10.0 && kVersion < 11.0)
let kiOS9 = (kVersion >= 9.0 && kVersion < 10.0)
let kiOS8 = (kVersion >= 8.0 && kVersion < 9.0)
let kiOS12Later = (kVersion >= 12.0)
let kiOS11Later = (kVersion >= 11.0)
let kiOS10Later = (kVersion >= 10.0)
let kiOS9Later = (kVersion >= 9.0)
let kiOS8Later = (kVersion >= 8.0)

//获取当前语言

let kAppCurrentLanguage = Locale.preferredLanguages[0]
//判断是否为iPhone
let kDeviceIsiPhone = (UI_USER_INTERFACE_IDIOM() == .phone)
//判断是否为iPad
let kDeviceIsiPad = (UI_USER_INTERFACE_IDIOM() == .pad)

//判断 iPhone 的屏幕尺寸

let kSCREEN_MAX_LENGTH = max(kUIScreenWidth, kUIScreenHeight)
let kSCREEN_MIN_LENGTH = min(kUIScreenWidth, kUIScreenHeight)

//获取状态栏、标题栏、导航栏高度

let kUIStatusBarHeight: CGFloat = UIApplication.shared.statusBarFrame.size.height
let kUINavigationBarHeight: CGFloat =  kUI_IPHONEX ? 88 : 44
let KUITabBarHeight: CGFloat = kUI_IPHONEX ? 83 : 49
//navigationBarHeight默认高度44 （iPhoneX 88）
//tabBarHeight默认高度49     （iPhoneX 83）

//适配 350 375 414       568 667 736
func kAutoLayoutWidth(_ width: CGFloat) -> CGFloat {
    return width*kUIScreenWidth / 375
}
func kAutoLayoutHeigth(_ height: CGFloat) -> CGFloat {
    return height*kUIScreenHeight / 667
}

//机型判断

let kUI_IPHONE = (UIDevice.current.userInterfaceIdiom == .phone)
let kUI_IPHONE5 = (kUI_IPHONE && kSCREEN_MAX_LENGTH == 568.0)
let kUI_IPHONE6 = (kUI_IPHONE && kSCREEN_MAX_LENGTH == 667.0)
let kUI_IPHONEPLUS = (kUI_IPHONE && kSCREEN_MAX_LENGTH == 736.0)
let kUI_IPHONEX = (kUI_IPHONE && kSCREEN_MAX_LENGTH > 780.0)

// 注册通知

func kNOTIFY_ADD(observer: Any, selector: Selector, name: String) {
    return NotificationCenter.default.addObserver(observer, selector: selector, name: Notification.Name(rawValue: name), object: nil)
}
// 发送通知
func kNOTIFY_POST(name: String, object: Any) {
    return NotificationCenter.default.post(name: Notification.Name(rawValue: name), object: object)
}
// 移除通知
func kNOTIFY_REMOVE(observer: Any, name: String) {
    return NotificationCenter.default.removeObserver(observer, name: Notification.Name(rawValue: name), object: nil)
}

//代码缩写

let kApplication = UIApplication.shared
let kAPPKeyWindow = kApplication.keyWindow
let kAppDelegate = kApplication.delegate
let kAppNotificationCenter = NotificationCenter.default
let kAppRootViewController = kAppDelegate?.window??.rootViewController

/**
字符串是否为空
@param str NSString 类型 和 子类
@return BOOL类型 true or false
*/

func kStringIsEmpty(_ str: String!) -> Bool {
    if str.isEmpty {
        return true
    }
    if str == nil {
        return true
    }
    if str.count < 1 {
        return true
    }
    if str == "(null)" {
        return true
    }
    if str == "null" {
        return true
    }
    return false
}

// 字符串判空 如果为空返回@“”

func kStringNullToempty(_ str: String) -> String {
    let resutl = kStringIsEmpty(str) ? "" : str
    return resutl
}
func kStringNullToReplaceStr(_ str: String,_ replaceStr: String) -> String {
    let resutl = kStringIsEmpty(str) ? replaceStr : str
    return resutl
}

/**
数组是否为空
@param array NSArray 类型 和 子类
@return BOOL类型 true or false
*/

func kArrayIsEmpty(_ array: [String]) -> Bool {
    let str: String! = array.joined(separator: "")
    if str == nil {
        return true
    }
    if str == "(null)" {
        return true
    }
    if array.count == 0 {
        return true
    }
    if array.isEmpty {
        return true
    }
    return false
}

/**
字典是否为空
@param dic NSDictionary 类型 和子类
@return BOOL类型 true or false
*/

func kDictIsEmpty(_ dict: NSDictionary) -> Bool {
    let str: String! = "\(dict)"
    if str == nil {
        return true
    }
    if str == "(null)" {
        return true
    }
    if dict .isKind(of: NSNull.self) {
        return true
    }
    if dict.allKeys.count == 0 {
        return true
    }
    return false
}