ios8 - iOS8 のポップオーバー内から UIAlertController を提示する

Question

iPad のポップオーバーに表示されるように UITableViewController を設定しました。

行をクリックすると、破壊的なアクションの可能性をユーザーに警告するアラートが表示されます。新しい UIAlertController を使用すると、次のようになります。

ポップオーバーが非常に小さくなります (実際には alertController ビューのサイズ)。[キャンセル] を押すと、結果が表示されます。

これが私のコードです：

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    var previouslySelectedCell: UITableViewCell?
    if checkedIndexPath != nil {
        previouslySelectedCell = tableView.cellForRowAtIndexPath(checkedIndexPath)
    }
    var selectedCell = tableView.cellForRowAtIndexPath(indexPath)

    let selectedCurrency = PortfolioCurrencyStore.sharedStore().allCurrencies[indexPath.row]

    if selectedCurrency.symbol != GlobalSettings.sharedStore().portfolioCurrency {

        // Warning : changing the portfolio currency will reset the portfolio
        var resetWarning = UIAlertController(title: NSLocalizedString("Currency Picker VC:AS title", comment: "Changing currency will reset portfolio"), message: nil, preferredStyle: .ActionSheet)

        // destructive button
        let resetAction = UIAlertAction(title: NSLocalizedString("Currency Picker VC:AS destructive", comment: "Destructive button title"), style: .Destructive, handler: { (action: UIAlertAction!) in

            // Remove checkmark from the previously marked cell
            previouslySelectedCell?.accessoryType = .None

            // Add checkmark to the selected cell
            selectedCell?.accessoryType = .Checkmark
            self.checkedIndexPath = indexPath

            // Animate deselection of cell
            self.tableView.deselectRowAtIndexPath(indexPath, animated:true)

            // Stock the portfolio currency as NSUserDefaults
            GlobalSettings.sharedStore().portfolioCurrency = selectedCurrency.symbol // link between portfolioCurrency as a String and currency.symbol as the property of a Currency instance.

            // Delete all items from the StockStore
            StockStore.sharedStore().removeAllStocks()
            println("StockStore : all entries were deleted")


            // Reload tableView
            self.tableView.reloadData()

            })

        // cancel button
        let cancelAction = UIAlertAction(title: NSLocalizedString("Currency Picker VC:AS cancel", comment: "Cancel button title"), style: .Cancel, handler:nil)

        resetWarning.addAction(resetAction)
        resetWarning.addAction(cancelAction)

        presentViewController(resetWarning, animated: true, completion: nil)

    } else {
        // Animate deselection of cell
        tableView.deselectRowAtIndexPath(indexPath, animated:true)
    }
}

私は何か見落としてますか ？

ご協力いただきありがとうございます

Answer 1

それを見つけた ！この AlertController がポップオーバー内に表示される場合、位置情報 (sourceView と sourceRect、または barButtonItem) を提供する必要があります。

お気に入り

resetWarning.popoverPresentationController?.sourceView = selectedCell?.contentView
resetWarning.popoverPresentationController?.sourceRect = selectedCell!.contentView.frame

私のコードは次のようにする必要がありました：

    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

    var previouslySelectedCell: UITableViewCell?
    if checkedIndexPath != nil {
        previouslySelectedCell = tableView.cellForRowAtIndexPath(checkedIndexPath)
    }
    var selectedCell = tableView.cellForRowAtIndexPath(indexPath)

    let selectedCurrency = PortfolioCurrencyStore.sharedStore.allCurrencies[indexPath.row]

    if selectedCurrency.symbol != GlobalSettings.sharedStore.portfolioCurrency {

        // Warning : changing the portfolio currency will reset the portfolio
        var resetWarning = UIAlertController(title: NSLocalizedString("Currency Picker VC:AS title", comment: "Changing currency will reset portfolio"), message: nil, preferredStyle: .ActionSheet)

        // destructive button
        let resetAction = UIAlertAction(title: NSLocalizedString("Currency Picker VC:AS destructive", comment: "Destructive button title"), style: .Destructive, handler: { (action: UIAlertAction!) in

            // Remove checkmark from the previously marked cell
            previouslySelectedCell?.accessoryType = .None

            // Add checkmark to the selected cell
            selectedCell?.accessoryType = .Checkmark
            self.checkedIndexPath = indexPath

            // Animate deselection of cell
            self.tableView.deselectRowAtIndexPath(indexPath, animated:true)

            // Stock the portfolio currency as NSUserDefaults
            GlobalSettings.sharedStore.portfolioCurrency = selectedCurrency.symbol // link between portfolioCurrency as a String and currency.symbol as the property of a Currency instance.

            // Delete all items from the StockStore
            StockStore.sharedStore.removeAllStocks()
            println("StockStore : all entries were deleted")

            // Delete all items from the CurrencyRateStore
            CurrencyRateStore.sharedStore.deleteAllRates()
            println("CurrencyStore : all entries were deleted")

            // Delete all items from the SalesJournal
            SalesJournal.sharedStore.removeAllEntries()
            println("SalesJournal : all Sales journal entries were deleted")


            // Reload tableView
            self.tableView.reloadData()

            // On Regular sizes, the currency picker is presented inside a popover : reloadData of the List View
            NSNotificationCenter.defaultCenter().postNotificationName("CurrencyPickerVC_PortfolioCurrencyDidChangeNotification", object:nil, userInfo:nil)

            // Animate deselection of cell
            tableView.deselectRowAtIndexPath(indexPath, animated:true)

            // Return to root VC
            self.navigationController?.popToRootViewControllerAnimated(true)

            })



        // cancel button
        let cancelAction = UIAlertAction(title: NSLocalizedString("Currency Picker VC:AS cancel", comment: "Cancel button title"), style: .Cancel, handler: { (alertAction: UIAlertAction!) -> Void in
            // Animate deselection of cell
            self.tableView.deselectRowAtIndexPath(indexPath, animated:true)
        })

        resetWarning.addAction(resetAction)
        resetWarning.addAction(cancelAction)

        // If this AlertController is presented inside a popover, it must provide the location information, either a sourceView and sourceRect or a barButtonItem.
        resetWarning.popoverPresentationController?.sourceView = selectedCell?.contentView
        resetWarning.popoverPresentationController?.sourceRect = selectedCell!.contentView.frame

        presentViewController(resetWarning, animated: true, completion: nil)


    } else {
        // Animate deselection of cell
        tableView.deselectRowAtIndexPath(indexPath, animated:true)
    }
}

画像は次のようになります。