[Label] 文字前距离

class UILabelOverride: UILabel {

    override func textRectForBounds(bounds: CGRect, limitedToNumberOfLines numberOfLines: Int) -> CGRect {
        var rect = super.textRectForBounds(bounds, limitedToNumberOfLines: numberOfLines)
        rect.origin.x = CGFloat(10)
        return rect
    }
    override func drawTextInRect(rect: CGRect) {
        let aRect = self.textRectForBounds(rect, limitedToNumberOfLines: self.numberOfLines)
        super.drawTextInRect(aRect)

    }
}

重写这两个方法之后就可以实现