Question

我正在将Objective-c代码转换为swift 2，我收到以下错误：

二元运算符＆＃39;＆amp;＆＃39;不能应用于类型＆＃39; UIFontDescriptorSymbolicTraits＆＃39;的操作数。和＆＃39; UInt32＆＃39;

二元运算符＆＃39; |＆＃39;不能应用于类型＆＃39; UIFontDescriptorSymbolicTraits＆＃39;的操作数。和＆＃39; UInt32＆＃39;

这是我的代码：if {... else {

的错误

func addOrRemoveFontTraitWithName(traitName: String, andValue traitValue: UInt32, ...) {

    var currentAttributesDict : NSDictionary = self.textView.textStorage.attributesAtIndex(selectedRange.location, effectiveRange: nil)
    var currentFont : UIFont = currentAttributesDict .objectForKey(NSFontAttributeName) as! UIFont

    var fontDescriptor : UIFontDescriptor = currentFont.fontDescriptor()
    var fontNameAttribute : NSString = fontDescriptor.objectForKey(UIFontDescriptorNameAttribute) as! NSString
    var changedFontDescriptor : UIFontDescriptor

    if (fontNameAttribute.rangeOfString(traitName).location == NSNotFound){
        var existingTraitsWithNewTrait : UIFontDescriptorSymbolicTraits = fontDescriptor.symbolicTraits | traitValue
        changedFontDescriptor = fontDescriptor.fontDescriptorWithSymbolicTraits(existingTraitsWithNewTrait)
    } else {
        var existingTraitsWithNewTrait : UIFontDescriptorSymbolicTraits = fontDescriptor.symbolicTraits & ~traitValue
        changedFontDescriptor = fontDescriptor.fontDescriptorWithSymbolicTraits(existingTraitsWithNewTrait)
    }
...
}

我尝试使用＆＃34; traitValue：UIFontDescriptorSymbolicTraits＆＃34;参数＆＃34; traitvalue＆＃34;

    func addOrRemoveFontTraitWithName(traitName: String, andValue traitValue: UIFontDescriptorSymbolicTraits, ...)

现在错误是

二元运算符＆＃39; |＆＃39;不能应用于两个＆＃39; UIFontDescriptorSymbolicTraits＆＃39;操作数

一元运算符＆＃39;〜＆＃39;不能应用于类型＆＃39; UIFontDescriptorSymbolicTraits＆＃39;

的操作数

此错误已在此处发布，但对我来说无法解决。它让我疯狂......： - （

Answer 1

使用rawValue是UInt32

var existingTraitsWithNewTrait =
UIFontDescriptorSymbolicTraits(rawValue: fontDescriptor.symbolicTraits.rawValue | traitValue)

二元运算符＆＃39; |＆＃39;不能应用于addOrRemoveFontTraitWithName的操作数

1 个答案: