不能調用類型NSAttributedString初始化與類型的參數列表（字符串：字符串，屬性：[NSObject的：AnyObject]？）

Question

我遷移代碼的XCode 6.4〜7，似乎這個錯誤不會分辨。

func onHoldReasonAttributedTextSetup(onHoldReson : String) -> NSMutableAttributedString 
{ 

    let markerFontAttributes : [NSObject : AnyObject]? = [ 
     NSFontAttributeName : UIFont(name: "HelveticaNeue", size: 12.0)!, 
     NSForegroundColorAttributeName : UIColor(red: 0/255, green: 152/255, blue: 204/255, alpha: 1.0) 
    ] 
    let onHoldText = NSAttributedString(string: "On Hold: ", attributes: markerFontAttributes) 
    let onHoldReasonText = NSAttributedString(string:onHoldReson) 
    var string = NSMutableAttributedString() 
    string.appendAttributedString(onHoldText) 
    string.appendAttributedString(onHoldReasonText) 
    return string 
} 

Answer 1

你需要改變這一行：

let markerFontAttributes : [NSObject : AnyObject]? = [ 
     NSFontAttributeName : UIFont(name: "HelveticaNeue", size: 12.0)!, 
     NSForegroundColorAttributeName : UIColor(red: 0/255, green: 152/255, blue: 204/255, alpha: 1.0) 
    ] 

到

let markerFontAttributes : [String : AnyObject]? = [ 
     NSFontAttributeName : UIFont(name: "HelveticaNeue", size: 12.0)!, 
     NSForegroundColorAttributeName : UIColor(red: 0/255, green: 152/255, blue: 204/255, alpha: 1.0) 
    ] 

因爲初始化器預計歸屬辭典[String : AnyObject]?格式：

init(string str: String, attributes attrs: [String : AnyObject]?) 

參考：NSAttributedString Class Reference