所以我想约束UICollectionViewCell内部的视图但似乎并不适用于所有的约束
这是我的自定义单元格类:
class MyCustomCell: UICollectionViewCell {
var message: String?
var messageView: UILabel = {
let label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.textColor = .black
label.textAlignment = .left
label.numberOfLines = 0
return label
}()
var cardView: UIView = {
var cardView = UIView()
cardView.translatesAutoresizingMaskIntoConstraints = false
return UIView()
}()
override init(frame: CGRect) {
super.init(frame: frame)
self.addSubview(cardView)
cardView.addSubview(messageView)
setupCardView()
setupMessageLabel()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setupCardView() {
NSLayoutConstraint.activate([
cardView.topAnchor.constraint(equalTo: self.topAnchor, constant: 5),
cardView.bottomAnchor.constraint(equalTo: self.bottomAnchor),
cardView.leftAnchor.constraint(equalTo: self.leftAnchor, constant: 10),
cardView.rightAnchor.constraint(equalTo: self.rightAnchor, constant: -10)
])
cardView.layer.cornerRadius = 20.0
cardView.layer.shadowColor = #colorLiteral(red: 0.2549019754, green: 0.2745098174, blue: 0.3019607961, alpha: 1)
cardView.layer.shadowOffset = CGSize(width: 0.0, height: 0.0)
cardView.layer.shadowRadius = 12.0
cardView.layer.shadowOpacity = 0.7
cardView.backgroundColor = #colorLiteral(red: 0.7490196078, green: 0.3529411765, blue: 0.9490196078, alpha: 1)
}
}
该限制被完全忽略,我得到一个完全白色的屏幕
注:我的自定义单元格的接线是否正确,因为我尝试添加一个标签,并将其与约束,甚至正常工作
现在的问题是解决了,当我加入
cardView.translatesAutoresizingMaskIntoConstraints = false
我以前的制约权......但为什么没有当我初始化我UIView这种方式工作
var cardView: UIView = {
var cardView = UIView()
cardView.translatesAutoresizingMaskIntoConstraints = false
return UIView()
}()
任何人任何想法?
编辑:你可以在评论中看到的问题是,我有
return UIView()
代替
return cardView
在我cardView变量...