delete a row in table view in swift

Question

I am trying to delete a row in table view. I have implemented the required methods but when i am swiping the row horizontally no delete button is coming. I have searched and I h

Answer 1

I struggled with this as well but finally found out a solution - I am running XCode 8.3.2. A lot of the answers I read were for older versions of XCode / Swift and many were for Objective-C.

The solution I found was to use the 'editActionsForRowAt' tool for UITableViews. Note: Everything else I read kept pointing me towards the 'commit editingStyle' tool for UITableView, but I could never get it to work. Using editActionsForRowAt worked perfectly for me.

NOTE: 'postData' is the name of the Array that I added data to.

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {

    let deleteAction = UITableViewRowAction(style: .default, title: "Delete", handler: { (action, IndexPath) in
        // Remove item from the array
        postData.remove(at: IndexPath.row)

        // Delete the row from the table view
        tableView.deleteRows(at: [IndexPath as IndexPath], with: .fade)
        })
        // set DeleteAction Button to RED (this line is optional - it simply allows you to change the color of the Delete button - remove it if you wish)
        deleteAction.backgroundColor = UIColor.red

    return [deleteAction]
}

I also have some code to add an 'EDIT button' alongside the Delete button:

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {

    let editAction = UITableViewRowAction(style: .default, title: "Edit", handler: { (action, IndexPath) in
        //print("Edit tapped")
        })
        // Set EditAction button to blue (this line is not mandatory - it just sets the color of the Edit box to blue)
        editAction.backgroundColor = UIColor.blue

    let deleteAction = UITableViewRowAction(style: .default, title: "Delete", handler: { (action, IndexPath) in
        //print("Delete tapped")
        // Remove item from the array
        postData.remove(at: IndexPath.row)

        // Delete the row from the table view
        tableView.deleteRows(at: [IndexPath as IndexPath], with: .fade)
        })
        // set DeleteAction Button to RED (this line isn't mandatory - it just sets the color of the Delete box)
        deleteAction.backgroundColor = UIColor.green

    return [editAction, deleteAction]
}

EDIT: fixed format so code showed up in the grey box :)