swift 自动布局(iOS9以后)

iconImageView.topAnchor.constraint(equalTo: self.topAnchor, constant: 13).isActive = true        iconImageView.centerXAnchor.constraint(equalTo: self.centerXAnchor).isActive = true        iconImageView.widthAnchor.constraint(equalToConstant: 33).isActive = true        iconImageView.heightAnchor.constraint(equalToConstant: 33).isActive = true        redView.rightAnchor.constraint(equalTo: iconImageView.rightAnchor).isActive = true        redView.topAnchor.constraint(equalTo: iconImageView.topAnchor).isActive = true        nameLb.topAnchor.constraint(equalTo: iconImageView.bottomAnchor, constant: 5).isActive = true        nameLb.leftAnchor.constraint(equalTo: self.leftAnchor, constant: 8).isActive = true        nameLb.rightAnchor.constraint(equalTo: self.rightAnchor, constant: -8).isActive = true

例子