swift - 有没有更好的方法来进行这种切换？

Question

我想要做的是:根据通知类型，我将更改 tableViewCell 的图像，我知道也许有更好的方法来实现这一点。我想也许使用 enums将是一个好方法，但是这里有很多代码，它只会随着时间的推移而增长。
有没有更好的方法来实现这一目标？

enum NotificationIcons {
    case newPayment
    case newPaymentMethod
    case newOffers
    case userInfoUpdate
    case supportChat
    case newAnnouncement
    case cardVerification
    
    var strings: String {
        switch self {
            
        case .newPayment:
            return "new_payment"
        case .newPaymentMethod:
            return "new_payment_method"
        case .newOffers:
            return "new_offers"
        case .userInfoUpdate:
            return "user_info_update"
        case .supportChat:
            return "support_chat"
        case .newAnnouncement:
            return "new_announcement"
        case .cardVerification:
            return "card_verification"
        }
    }

    var image: UIImage {
        switch self {
        case .newPayment: return UIImage(named: "Icon-notification-service-pay")!
        case .newPaymentMethod: return UIImage(named: "Icon-notification-add-paycard")!
        case .newOffers: return UIImage(named: "Icon-notification-promos")!
        case .userInfoUpdate: return UIImage(named: "Icon-notification-update-data")!
        case .supportChat: return UIImage(named: "Icon-notification-support")!
        case .newAnnouncement: return UIImage(named: "Icon-notification-advice")!
        case .cardVerification: return UIImage(named: "Icon-notification-add-paycard")!
        }
    }
    
    var detailImage: UIImage {
        switch self {
        case .newPayment: return UIImage(named: "Icon-notification-detail-service-pay")!
        case .newPaymentMethod: return UIImage(named: "Icon-notification-detail-add-paycard")!
        case .newOffers: return UIImage(named: "Icon-notification-detail-promos")!
        case .userInfoUpdate: return UIImage(named: "Icon-notification-detail-update-data")!
        case .supportChat: return UIImage(named: "Icon-notification-detail-support")!
        case .newAnnouncement: return UIImage(named: "Icon-notification-detail-advice")!
        case .cardVerification: return UIImage(named: "Icon-notification-detail-add-paycard")!
        }
    }
    
}

在我的 tableViewCell 里面我有这个变量通知，它开始在 didSet 上设置所有值

switch notification.type {
            case NotificationIcons.newPayment.strings:
                notificationImageView.image = NotificationIcons.newPayment.image
                break
            case NotificationIcons.newPaymentMethod.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            case NotificationIcons.newOffers.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            case NotificationIcons.userInfoUpdate.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            case NotificationIcons.supportChat.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            case NotificationIcons.newAnnouncement.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            case NotificationIcons.cardVerification.strings:
                notificationImageView.image = NotificationIcons.newPaymentMethod.image
                break
            default:
                break
            }

Answer 1

首先，分配类型 String 的 rawValue到 NotificationIcons枚举，像这样:

enum NotificationIcons: String {
    case newPayment = "new_payment"
    //...
}

然后，使用初始化程序修改 switch 语句:

guard let type = NotificationIcons(rawValue: notification.type) else { return }
notinotificationImageView.image = type.image