//Update 0729
`dlog` 更新：[//www.greatytc.com/p/e65d7c661741]
整理下 Swift 中常用的 Constant.swift 文件
import UIKit
extension String {
var floatValue: Float {
return (self as NSString).floatValue
}
}
extension String {
func stringByAppendingPathComponent(path: String) -> String {
let nsSt = self as NSString
return nsSt.stringByAppendingPathComponent(path)
}
}
//MARK: Screen
let SCREEN_BOUNDS = UIScreen.mainScreen().bounds
let SCREEN_SCALE = UIScreen.mainScreen().scale
let SCREEN_WIDTH = UIScreen.mainScreen().bounds.size.width
let SCREEN_HEIGHT = UIScreen.mainScreen().bounds.size.height
let SCREEN_MAX_LENGTH = max(SCREEN_WIDTH, SCREEN_HEIGHT)
let SCREEN_MIN_LENGTH = min(SCREEN_WIDTH, SCREEN_HEIGHT)
//MARK: Device
let IS_IPAD = UIDevice.currentDevice().userInterfaceIdiom == UIUserInterfaceIdiom.Pad
let IS_IPHONE = UIDevice.currentDevice().userInterfaceIdiom == UIUserInterfaceIdiom.Phone
let IS_IPHONE_4_OR_LESS = (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)
let IS_IPHONE_5 = (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)
let IS_IPHONE_6 = (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
let IS_IPHONE_6P = (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)
//MARK: System Version
let IS_OS_7_OR_LATER = (UIDevice.currentDevice().systemVersion as String).floatValue >= 7.0
let IS_OS_8_OR_LATER = (UIDevice.currentDevice().systemVersion as String).floatValue >= 8.0
let IS_OS_9_OR_LATER = (UIDevice.currentDevice().systemVersion as String).floatValue >= 9.0
//MARK: Macros
/**
dLog macros to abbreviate NSLog.
Use like this:
dLog(“Log this!”)
**/
#if DEBUG
func dLog(@autoclosure message: () -> String, filename: String = __FILE__, function: String = __FUNCTION__, line: Int = __LINE__) {
NSLog(“[\(filename.stringByAppendingPathComponent):\(line)] \(function) – %@”, message())
}
#else
func dLog(@autoclosure message: () -> String, filename: String = __FILE__, function: String = __FUNCTION__, line: Int = __LINE__) {
}
#endif
整理的时候发现，下面的两行代码如果一起放到 Constant.swift 中会导致编辑失败
let IS_IPAD = UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Pad
let IS_OS_7_OR_LATER = (UIDevice.currentDevice().systemVersion as String).floatValue >= 7.0
错误提示：
IR generation failure: program too clever: variable collides with existing symbol OBJC_CLASS_$_UIDevice
解决方法是将 UI_USER_INTERFACE_IDIOM() 方法替换为
let IS_IPAD = UIDevice.currentDevice().userInterfaceIdiom == UIUserInterfaceIdiom.Pad
因为苹果关于 UI_USER_INTERFACE_IDIOM() 的文档有描述
The UI_USER_INTERFACE_IDIOM() function is provided for use when deploying to a version of the iOS less than 3.2. If the earliest version of iPhone/iOS that you will be deploying for is 3.2 or greater, you may use -[UIDevice userInterfaceIdiom] directly.
另外，dlog 生效需要在 Build Settings – Swift Compiler – Custom Flags – Other Swift Flags 中，Debug 一栏，增加
-D DEBUG
才可以生效
以上
