swift Label 高度 宽度自适应

简单粗暴 直接上代码

 let lableText = self.nameLable.text
    let options : NSStringDrawingOptions =
        NSStringDrawingOptions.usesLineFragmentOrigin
    
    let string:NSString = lableText! as NSString

    let boundingRect = string.boundingRect(with: CGSize.init(width: screenWidth-40, height: 30),  options: options, attributes: [NSAttributedString.Key.font:self.nameLable.font!],context: nil)
    
    
    self.nameLable.frame=CGRect.init(x: 10, y: 0, width: boundingRect.size.width, height:  boundingRect.size.height)

// 设置方法

/* 
 textStr 要处理的字段
 

*/ 
func changeLableSizeString(textStr:String,size:CGSize,font:UIFont) - > CGSize {
    let lableText = textStr
        
    let options : NSStringDrawingOptions =
            NSStringDrawingOptions.usesLineFragmentOrigin
    let string:NSString = lableText as NSString
    let boundingRect = string.boundingRect(with: size,  options: options, attributes: [NSAttributedString.Key.font:font],context: nil)
        
    return boundingRect.size
}