swift - 如何删除以编程方式添加的约束

Question

如何以编程方式删除此约束。请帮忙

cell.textView.addConstraint(NSLayoutConstraint(item: cell.textView, attribute: .height, relatedBy: .greaterThanOrEqual,
                                                           toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 54))

该代码已添加到表格单元格中。我想在键盘隐藏时删除。

Answer 1

var constraint = NSLayoutConstraint(item: cell.textView, attribute: .height, relatedBy: .greaterThanOrEqual,
                                                           toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 54)

constraint.isActive = false