删除按钮和线之间不需要的空间 swift xcode

Question

I am new to iPhone application development.

I am designing the app like this. in this design, there are two buttons below to delete button and below to those two button, there is the line. that you are seeing in this picture.

What i want is, i want to add the line below to the delete button when those two buttons are hidden by some condition. if those two buttons visible means, that line should come below to those two button. Not below to the delete button.

I have added the following code in cellForRowAt function of TableView. it is not working.

cell.line.frame = CGRect(x: 0, y:cell.btnDelete.frame.maxY, width: cell.line.frame.width , height: 1 ) 

Any body can help me to solve this issue.

I have added following code to.

  func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
      return UITableViewAutomaticDimension
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {


    return UITableViewAutomaticDimension
}

and

    dataTable.rowHeight = UITableViewAutomaticDimension
    dataTable.estimatedRowHeight = 100

Answer 1

You have to achieve this using some tricky way.Use Stack View Add Show,Hide buttons to one UIView.add all other components to another UIView.Add UIStackView to your custom cell and add constraints like this.

 NSLayoutConstraint.activate([
            stackView.leadingAnchor.constraint(equalTo: leadingAnchor),
            stackView.trailingAnchor.constraint(equalTo: trailingAnchor),
            stackView.topAnchor.constraint(equalTo: topAnchor),
            stackView.bottomAnchor.constraint(equalTo: bottomAnchor),
 ])

set stackView distribution to.Fill.

when you want to show/hide buttons, you can add/remove the arranged subView from tableview cell stackView.If you are show/hide buttons in cellForItemAt make sure remove all arranged subviews before add.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        cell.stackView.removeArrangedSubview(cell.viewOne)
        cell.stackView.removeArrangedSubview(cell.viewTwo)

        if isShowBuutons {
            cell.stackView.addArrangedSubview(cell.viewOne) //View with All other elements
            cell.stackView.addArrangedSubview(cell.viewTwo) //View with buttons
        }else{
            cell.stackView.addArrangedSubview(cell.viewOne) //View with All other elements
        }
    }