I add a `UIView` in `UIStoryboard` and bind it to a custom `UIView` class called testView,next, I create a `UIView` called circelView in textView in require init function ,then I crate two `UILabel` in circelView

**this is my step** 

1. initialization the circelView
2. add AutoLayout to circelView
3. create two `UILabel` and add them to circelView
4. add AutoLayout to two `UILabel`

then I run the app, I can find the subView in current position , But I can not find the two `UILabel` in screen ,what happen?

this is my code : 

```
 required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)

        circelView = UIView()
        self.addSubview(circelView)
        circelView.snp_makeConstraints(closure: { (make) -> Void in
            make.size.equalTo(80)
            make.top.equalTo(self.snp_top)
            make.right.equalTo(self.snp_right)
        })

        titleLabel = UILabel()
        titleLabel.textColor = colorffffff
        titleLabel.backgroundColor = UIColor.yellowColor()
        titleLabel.font = font32
        titleLabel.text = "hello"
        titleLabel.numberOfLines = 1
        titleLabel.backgroundColor = UIColor.yellowColor()
        titleLabel.textAlignment = NSTextAlignment.Center
        circelView.addSubview(titleLabel)
        titleLabel.snp_makeConstraints { (make) -> Void in
            make.center.equalTo(circelView.snp_center)
        }

        detailLabel = UILabel()
        detailLabel.textColor = colorffffff
        detailLabel.font = font24
        detailLabel.text = "hello"
        titleLabel.numberOfLines = 1
        detailLabel.textAlignment = NSTextAlignment.Center
        detailLabel.addSubview(titleLabel)
        detailLabel.snp_makeConstraints { (make) -> Void in
            make.top.equalTo(titleLabel.snp_bottom).offset(3)
            make.centerX.equalTo(titleLabel.snp_centerX)
        }

    }

```