如何设置UITableView _UISwipeToDeletePlaceholderCell的颜色

Question

I have UITableView with a backgroundView set to a UIImageView. The UIImageView uses an image with gradient pattern.

let imageView = UIImageView.init(frame: tableView.frame)
imageView.image = UIImage.init(named: "background")
tableView.backgroundView = imageView

When I delete rows, the table automatically inserts a white row. When I pause the app with Xcode to view the drawn components, it shows that it's a _UISwipeToDeletePlaceholderCell.

How do I get the _UISwipeToDeletePlaceholderCell to use a clear background color?

I have tried setting all components in the tableview to use clear colors but that didn't seem to work

view.backgroundColor = UIColor.clear
tableView.backgroundColor = UIColor.clear
tableView.separatorColor = UIColor.clear
tableView.sectionIndexColor = UIColor.clear
tableView.sectionIndexBackgroundColor = UIColor.clear
tableView.sectionIndexTrackingBackgroundColor = UIColor.clear

Here is how I am deleting:

override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if editingStyle == .delete {
        // Delete the row from the data source
        self.budget = budget.removingTransaction(at: indexPath.row-1)
        tableView.deleteRows(at: [indexPath], with: .none)
    }
}

Answer 1

I hope it's due to updating table after delete your row. Try this code:-

override func tableView(_ tableView: UITableView, commit editingStyle: 
UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if editingStyle == .delete {
        // Delete the row from the data source
        self.budget = budget.removingTransaction(at: indexPath.row-1)
        tableView.beginUpdates()
        tableView.deleteRows(at: [indexPath], with: .none)
        tableView.endUpdates()
    }
}

I hope it will help you, Thank you.

Answer 2

 func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if editingStyle == .delete {
        dataSource.remove(at: indexPath.row)
        tableView.deleteRows(at: [indexPath], with: .automatic)
        clearWhiteBackgroundWhenDelete()
    }
}

func clearWhiteBackgroundWhenDelete() {
    if let whiteBackgroudViewClass = NSClassFromString("_UISwipeToDeletePlaceholderCell") {
       _ = tableView.subviews.map { if $0.isKind(of: whiteBackgroudViewClass) { $0.backgroundColor = .clear } }
    }
}