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- deprecated NSError+Presentation and title is no longer localized, due to genstrings errors - UIViewController+ErrorAlert - as a replacement of NSError+Presentation - updated using Xcode 11 GM seed 2
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84
MHAppKit/Extensions/UIKit/UIViewController/UIViewController+ErrorAlert.swift
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| // | ||
| // UIViewController+ErrorAlert.swift | ||
| // MHAppKit | ||
| // | ||
| // Created by Milen Halachev on 17.09.19. | ||
| // Copyright © 2019 Milen Halachev. All rights reserved. | ||
| // | ||
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| import Foundation | ||
| import UIKit | ||
| import UserNotifications | ||
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| extension UIViewController { | ||
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| ///A default handler, which is executed in case the app is in backgroud when `UIViewController.showError(_:title:closeTitle:retryTitle:closeHandler:backgroundHandler:retryHandler:)` is called. Default to showing a local notification with the provided title and message. In case you'd like to customize this behaviour, eg. adding actions - you can provude your own custom default handler. | ||
| public static var showErrorDefaultBackgroundHandler: (String, String?) -> Void = { (title, message) in | ||
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| //show local notification | ||
| if #available(iOS 10.0, *) { | ||
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| let content = UNMutableNotificationContent(title: title, body: message) | ||
| let request = UNNotificationRequest(content: content) | ||
| UNUserNotificationCenter.current().add(request, withCompletionHandler: nil) | ||
| } | ||
| else { | ||
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| let notification = UILocalNotification() | ||
| notification.fireDate = nil | ||
| notification.alertBody = message | ||
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| if #available(iOS 8.2, *) { | ||
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| notification.alertTitle = title | ||
| } | ||
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| UIApplication.shared.scheduleLocalNotification(notification) | ||
| } | ||
| } | ||
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| /** | ||
| Shows an alert representation of a given error within the receiver's context. If the alert is presented withing a background state - a local notification is also shown. | ||
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| - parameter error: The error to show. If nil, no error will be shown. This parameter is optional for convenience. | ||
| - parameter title: The alert title. | ||
| - parameter closeTitle: The title of the close button of the alert. Default to `NSLocalizedString("Close", comment: "")`. | ||
| - parameter retryTitle: The title of the retry button of the alert. Default to `NSLocalizedString("Retry", comment: "")`. | ||
| - parameter backgroundHandler: An optional handler, executed if the alert is gong to be shown, when the app is in the background. Default to `UIViewController.showErrorDefaultBackgroundHandler`, which shows a local notification. | ||
| - parameter closeHandler: An optional close handler. Default to `nil`. | ||
| - parameter retryHandler: An optional retry handler. If `nil`, no retry option is presented. | ||
| */ | ||
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| func showError(_ error: Error?, title: String, closeTitle: String = NSLocalizedString("Close", comment: ""), retryTitle: String = NSLocalizedString("Retry", comment: ""), closeHandler: (() -> Void)? = nil, backgroundHandler: ((String, String?) -> Void)? = UIViewController.showErrorDefaultBackgroundHandler, retryHandler: (() -> Void)?) { | ||
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| guard let error = error else { | ||
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| return | ||
| } | ||
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| let message = error.localizedDescription | ||
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| if UIApplication.shared.applicationState != .active { | ||
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| backgroundHandler?(title, message) | ||
| } | ||
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| var actions: [UIAlertAction] = [ | ||
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| UIAlertAction(title: closeTitle, style: .cancel, handler: { (_) in | ||
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| closeHandler?() | ||
| }) | ||
| ] | ||
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| if let retryHandler = retryHandler { | ||
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| actions.append(UIAlertAction(title: retryTitle, style: .default, handler: { (_) in | ||
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| retryHandler() | ||
| })) | ||
| } | ||
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| self.showAlertView(title: title, message: message, actions: actions) | ||
| } | ||
| } |