CODEWITHSUNDEEP
swiftuitableview
JOnney
JOnney

Reputation: 89

Remove section from a Tableview

I have a switch button to hide and show a section in table view

lets say I have three section that defined in a array:

var sections = ["section1", "section2", "section3"]

and here is table view protocols for sections

override func numberOfSections(in tableView: UITableView) -> Int {
    return sections.count
}

and here is the function that will be called when the switch button toggle will change:

@objc func switchStateDidChange(_ sender: UISwitch) {
    sections.remove(at: 1)

    // My problem is here
    tableView.deleteSections(IndexSet, with: .top)
}

In this function, first, I said that the number of sections in the section array will be reduced by one, then delete the section 1

but if I put 1 in IndexSet, I get this error:

Cannot convert value of type 'Int' to expected argument type 'IndexSet'

How I can tell to tableView.deleteSections to remove section 1?

Upvotes: 1

Views: 2131

Answers (3)

RichAppz
RichAppz

Reputation: 1529

You need to make sure you do a couple of things when updating the UITableView.

  • Make sure you have removed the data from the array that the tableView is using

  • Make sure that when you update the array it is not refreshing the tableView, for example, you an observer or didSet on the array.

  • Make sure you have the section available before trying to update

  • Tell the tableView you are going to make updates

let removeSection = 0
if tableView.numberOfSections >= removeSection+1 {
    tableView.beginUpdates()
    tableView.deleteSections([removeSection], with: .top)
    tableView.endUpdates()     
}

Upvotes: 1

vadian
vadian

Reputation: 285079

You have to create a specific IndexSet instance from the Int

tableView.deleteSections(IndexSet(integer: 1), with: .top)

or use the init(arrayLiteral: method of IndexPath which infers an Int array

tableView.deleteSections([1], with: .top)

Upvotes: 1

Shehata Gamal
Shehata Gamal

Reputation: 100503

You can try

tableView.deleteSections([0], with: .top)

change value to whatever index you need

Upvotes: 3

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