Swift 动画 刷新布局

    let offY = isOpen == true ? (KScreenHeight - 300):246
    
    self.tableView.snp.updateConstraints { make in
        make.top.equalToSuperview().offset(offY)
        make.left.right.equalToSuperview()
        make.bottom.equalToSuperview()
    }
    self.tableView.updateFocusIfNeeded()
    self.tableView.needsUpdateConstraints()
    self.tableView.updateConstraintsIfNeeded()
    weak var weakSelf = self
    UIView.animate(withDuration: 0.3, animations: {
        weakSelf?.view.layoutIfNeeded()
    })