Swift 通用常量

import UIKit
import KeychainSwift


/// UDID
var USERUDID: String {
    let key = "myUDID"
    let keychina = KeychainSwift()
    keychina.synchronizable = true
    var sys_udid = keychina.get(key) // 得到存储的udid
    
    if let sys_udid = sys_udid { // 有值
        return sys_udid
    }
    
    // 没有值
    sys_udid = UIDevice.current.identifierForVendor?.uuidString
    if let sys_udid = sys_udid { // 有值
        keychina.synchronizable = true
        keychina.set(sys_udid, forKey: key)
        return sys_udid
    }
    return ""
}

/// 屏宽
var KSCREEN_WIDTH: CGFloat {
    return UIScreen.main.bounds.size.width
}

/// 屏高
var KSCREEN_HEIGHT: CGFloat {
    return UIScreen.main.bounds.size.height
}

/// 状态栏高度
var KSTATUSBAR_HEIGHT: CGFloat {
    let statusBarH: CGFloat = UIApplication.shared.statusBarFrame.size.height
    if statusBarH > 0 {
        return statusBarH
    }else {
        return isBangScreen ? 44.0 : 20.0
    }
}

/// 导航条高度
var KNAVBAR_HEIGHT: CGFloat {
    return 44.0
}

/// 状态栏+导航条高度
var KNAVBARANDSTATUSBAR_HEIGHT: CGFloat {
    return KSTATUSBAR_HEIGHT + KNAVBAR_HEIGHT
}


/// tabbar高度
var KTABBAT_HEIGHT: CGFloat {
    return isBangScreen ? 83.0 : 49.0
}

/// 底部高度 刘海屏: 34.0  非刘海屏: 0.0
var KBOTTOM_HEIGHT:CGFloat {
    return isBangScreen ? 34.0 : 0.0
}

/// 是否为刘海屏 true: 刘海屏 false: 非刘海屏
var isBangScreen: Bool {
    if #available(iOS 11, *) {
        guard let w = UIApplication.shared.delegate?.window, let unwrapedWindow = w else { return false }
        
        if unwrapedWindow.safeAreaInsets.bottom > 0 {  return true }
    }
    return false
}

/// 日记打印
///
/// - Parameters:
///   - message: 打印的信息
///   - file: 文件名
///   - lineNumber: 行数
func LZYLogLine<T>(message: T, file: String = #file, lineNumber: Int = #line) {
    #if DEBUG
    let fileName = (file as NSString).lastPathComponent
    print("[\(fileName):line:\(lineNumber)]---\(message)")
    #endif
}