你可以用故事板这个图片来做

将标示高度关系设定为大于或相等
并将视图高度关系设定为大于或相等
它像魔术一样工作

下面是你的问题的工作解决方案。我用了autoLayout。在testView中，你没有设置heightAnchor

let testView: UIView = {
    let view = UIView()
    view.translatesAutoresizingMaskIntoConstraints = false
    view.backgroundColor = UIColor.redColor()
    return view
}()

let testLabel: UILabel = {
    let label = UILabel()
    label.numberOfLines = 0
    label.translatesAutoresizingMaskIntoConstraints = false
    label.text = "jashfklhaslkfhaslkjdhflksadhflkasdhlkasdhflkadshkfdsjh"
    return label
}()

override func viewDidLoad() {
    super.viewDidLoad()

    view.addSubview(testView)
    testView.centerXAnchor.constraintEqualToAnchor(view.centerXAnchor).active = true
    testView.centerYAnchor.constraintEqualToAnchor(view.centerYAnchor).active = true
    testView.widthAnchor.constraintEqualToConstant(100).active = true

    testView.addSubview(testLabel)
    testLabel.topAnchor.constraintEqualToAnchor(testView.topAnchor, constant: 10).active = true
    testLabel.leftAnchor.constraintEqualToAnchor(testView.leftAnchor, constant: 10).active = true
    testLabel.bottomAnchor.constraintEqualToAnchor(testView.bottomAnchor, constant: -10).active = true
    testLabel.rightAnchor.constraintEqualToAnchor(testView.rightAnchor, constant: -10).active = true

}

我知道这是迟来的答案，但它可能会帮助别人。
要为UIView设置动态高度，请按照情节提要中的简单步骤操作
1.在UIViewController中添加一个UIView，并设置您喜欢的背景颜色

1.现在设置以下约束前导、顶部、尾部和高度（截至目前）。我们可以调整高度约束以进一步实现动态高度。

1.更新高度约束，如下所示：

1.现在，故事板可能会向您显示不等式约束歧义。但我们现在要解决这个问题。只需在UIView中添加一个标签，如

所示
1.现在设置标签前导、尾随、顶部和底部

的约束
1.好哇，现在UIView的高度将根据标签的高度增加。只需对标签

进行以下更改
这个技巧可以和这个UIView中的其他视图一起使用。问题是你必须为这个UIView中的视图指定底部约束。

首先使用此函数计算包含文本的标注的大小

func calculateSizeOfLabel(text:String,labelWidth:CGFloat,labelFont:UIFont)->CGSize{
        let constrainedSize = CGSizeMake(labelWidth , 9999)

        var attributesDictionary:[String:AnyObject] = [:]

            attributesDictionary = [NSFontAttributeName:labelFont] as [String:AnyObject]

        let string:NSMutableAttributedString = NSMutableAttributedString(string:text, attributes:attributesDictionary)

        var boundingRect = string.boundingRectWithSize(constrainedSize, options:.UsesLineFragmentOrigin, context:nil)

        if (boundingRect.size.width > labelWidth) {
            boundingRect = CGRectMake(0,0, labelWidth, boundingRect.size.height);
        }

    return boundingRect.size
}

然后将返回大小的高度应用于UIView，如下所示

let labelText = description.text
    let labelWidth = description.bounds.width
    let labelFont = description.font
    let calculatedHeight = calculateSizeOfLabel(labelText,labelWidth:labelWidth,labelFont:labelFont).height 
    DescView.frame = CGRectMake(DescView.frame.origin.x, DescView.frame.origin.y, DescView.bounds.width,calculatedHeight)

下面的代码将解决您的问题：
//调整视图高度

[yourView setFrame:CGRectMake(yourView.frame.origin.x, yourView.frame.origin.y, yourView.frame.size.width, yourLable.frame.size.height + yourLable.frame.origin.y + extraspace)];

- (IBAction)action:(id)sender {
self.label.text = @"UIImage *imageOne = [UIImage imageNamed:@RosePot.jpUIImageJPEGRepresentationg";
NSLog(@"%f",self.label.bounds.size.height);

float height = [self getHeightForText:@"UIImage *imageOne = [UIImage imageNamed:@RosePot.jpUIImageJPEGRepresentationg" withFont:[UIFont fontWithName:@"HelveticaNeue" size:15] andWidth:self.label.bounds.size.width];
NSLog(@"%f",height);
self.constraint.constant = height + self.viewOne.bounds.size.height;

}

-(float) getHeightForText:(NSString*) text withFont:(UIFont*) font andWidth:(float) width{
CGSize constraint = CGSizeMake(width , 20000.0f);
CGSize title_size;
float totalHeight;

SEL selector = @selector(boundingRectWithSize:options:attributes:context:);
if ([text respondsToSelector:selector]) {
    title_size = [text boundingRectWithSize:constraint
                                    options:NSStringDrawingUsesLineFragmentOrigin
                                 attributes:@{ NSFontAttributeName : font }
                                    context:nil].size;

    totalHeight = ceil(title_size.height);
} else {
    title_size = [text sizeWithFont:font
                  constrainedToSize:constraint
                      lineBreakMode:NSLineBreakByWordWrapping];
    totalHeight = title_size.height ;
}

CGFloat height = MAX(totalHeight, 40.0f);
return height;

}

为视图给予行距、顶部、尾部和高度约束。
和视图名称的高度插座作为约束[因为我使用了插座名称约束]