Swift - Drawing text with drawInRect:withAttributes:

The problem is that font is optional because the convenience contructors now return optional values, so font needs to be unwrapped to be a value in your dictionary:

if let actualFont = font {
    let textFontAttributes = [
        NSFontAttributeName: actualFont,
        NSForegroundColorAttributeName: textColor,
        NSParagraphStyleAttributeName: textStyle
    ]

    text.drawInRect(NSOffsetRect(textRect, 0, 1), withAttributes: textFontAttributes)
}

In Swift 4

    let attributeDict: [NSAttributedString.Key : Any] = [
        .font: font!,
        .foregroundColor: textColor,
        .paragraphStyle: textStyle,
    ]

    text.draw(in: rect, withAttributes: attributeDict)

This is also another option.

let textFontAttributes = [
    NSFontAttributeName : font!,
    NSForegroundColorAttributeName: textColor,
    NSParagraphStyleAttributeName: textStyle
]