我一直在尝试更改 tableview 中滑动删除按钮的背景颜色。我查看了一些 Objective-C 示例，但无法将它们翻译成 Swift。

这是我目前的代码:

    var cellDeleteBackground = UIView()
    cellDeleteBackground.backgroundColor = UIColor.greenColor()
    cell.editingAccessoryView = cellDeleteBackground

我在 cellForRowAtIndexPath 中有这个，但目前它正在崩溃并出现错误“以 NSException 类型的未捕获异常终止”

这段代码会产生干扰吗？

    override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
    if tableView == self.searchDisplayController?.searchResultsTableView {
        return false
    } else {
        return true
    }
}

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if (editingStyle == UITableViewCellEditingStyle.Delete) {
            if tableView == self.searchDisplayController?.searchResultsTableView {
                UITableViewCellEditingStyle.None
            } else {
            var valueToRemove: AnyObject! = unformatted.objectAtIndex(indexPath.row)

            if images.objectAtIndex(indexPath.row) as NSObject == 0 {
                totalSpendingsCounter = totalSpendingsCounter - Double(valueToRemove as NSNumber)
                NSUserDefaults.standardUserDefaults().setDouble(totalSpendingsCounter, forKey: "spendingsCounter")
            } else if images.objectAtIndex(indexPath.row) as NSObject == 1 {
                totalCreditCounter = totalCreditCounter - Double(valueToRemove as NSNumber)
                NSUserDefaults.standardUserDefaults().setDouble(totalCreditCounter, forKey: "creditCounter")
            }

            currencyDouble = NSUserDefaults.standardUserDefaults().doubleForKey("currencyCounter")
            currentBudgetCalculation = currencyDouble + totalCreditCounter - totalSpendingsCounter

            newTransactionEntered = true

            var formatter = NSNumberFormatter()
            formatter.numberStyle = .CurrencyStyle
            formatter.locale = NSLocale.currentLocale() // This is the default
            var formattedNumberCurrent = formatter.stringFromNumber(currentBudgetCalculation)

            var defaults = NSUserDefaults(suiteName: "group.AffordIt")
            defaults.setObject(formattedNumberCurrent, forKey: "currentBudgetWidget")
            defaults.setObject(newTransactionEntered, forKey: "new")

            values.removeObjectAtIndex(indexPath.row)
            images.removeObjectAtIndex(indexPath.row)
            names.removeObjectAtIndex(indexPath.row)
            dates.removeObjectAtIndex(indexPath.row)
            unformatted.removeObjectAtIndex(indexPath.row)
            notes.removeObjectAtIndex(indexPath.row)

            NSUserDefaults.standardUserDefaults().setObject(names, forKey: "names")
            NSUserDefaults.standardUserDefaults().setObject(values, forKey: "values")
            NSUserDefaults.standardUserDefaults().setObject(dates, forKey: "dates")
            NSUserDefaults.standardUserDefaults().setObject(unformatted, forKey: "unformatted")
            NSUserDefaults.standardUserDefaults().setObject(images, forKey: "images")
            NSUserDefaults.standardUserDefaults().setObject(notes, forKey: "notes")

            tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
        }
    }
}

最佳答案

这是在 iOS8 中自定义滑动删除的方法:

func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
    var deleteButton = UITableViewRowAction(style: .Default, title: "Delete", handler: { (action, indexPath) in
        self.tableView.dataSource?.tableView?(
            self.tableView,
            commitEditingStyle: .Delete,
            forRowAtIndexPath: indexPath
        )

        return
    })

    deleteButton.backgroundColor = UIColor.blackColor()

    return [deleteButton]
}

关于ios - 在 Swift 中更改滑动删除背景的颜色，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26337310/