Swift 2：在文本视图对象中更改颜色

Question

I'm trying to apply different colours to text in a Text View object like this, but text always appears in black. Does it have something to do with the Utilities settings in Xcode?

func returnAPI(returnAPI: String) {
    log.textColor = UIColor.blueColor()
    log.text.appendContentsOf(returnAPI)
}

Answer 1

func returnAPI(returnAPI: String) 
{
    log.text.appendContentsOf(returnAPI)
    log.textColor = UIColor.blueColor()   
}

// Try like this, i don't know it will work.