Using an Unresolved Static Identifier

Question

I updated xcode 8.0 swift 3 and found many errors. This is one of them:

Using an Unresolved Static Identifier

This is my class that I created and worked in the previous version of xcode 7.3.1 swift 2.

import UIKit enum FONTSIZE:Int { case sizesmall = 1 case sizesbig = 2 case sizemedium = 3 } class sizeFont: NSObject { private static var __once: () = { Static.instance = sizeFont() }() class func getSize(_ enumFont : FONTSIZE) -> CGFloat { var siz = 17 switch(enumFont){ case .sizesbig: if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 0){// kecil if(isphone()){ siz = 22//17 }else{ siz = 22//24 } }else if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 1){// besar if(isphone()){ siz = 30//19 }else{ siz = 30//28 } }else{ if(isphone()){ siz = 22//17 }else{ siz = 22//22 } } break case .sizesmall: if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 0){// kecil if(isphone()){ siz = 17//15//12 }else{ siz = 24//22//19 } }else if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 1){// besar if(isphone()){ siz = 19//17//15 }else{ siz = 28//26//24 } }else{ if(isphone()){ siz = 17//15//12 }else{ siz = 24//22//19 } } break case .sizemedium: if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 0){// kecil if(isphone()){ siz = 15 }else{ siz = 22 } }else if((UserDefaults.standard.value(forKey: "fontsize") as AnyObject).int32Value == 1){// besar if(isphone()){ siz = 17 }else{ siz = 26 } }else{ if(isphone()){ siz = 15 }else{ siz = 22 } } break } return CGFloat(siz) } func getnametag(){ } class func isphone() ->Bool { if(UIDevice.current.userInterfaceIdiom == UIUserInterfaceIdiom.phone){ return true }else{ return false } } // example singleton swift class var sharedInstance: sizeFont { struct Static { static var onceToken: Int = 0 static var instance: sizeFont? = nil } _ = sizeFont.__once return Static.instance! } } 

The red color is Static.instance = sizeFont ().

I'm not sure why I get this, does anyone else know?

Answer 1

Static declared inside the class variable, which leads to unreachability for everyone outside the var declaration, just move it to the outside.

 ... struct Static { static var onceToken: Int = 0 static var instance: sizeFont? = nil } // example singleton swift class var sharedInstance: sizeFont { _ = sizeFont.__once return Static.instance! } ...