ios - 如何在 iOS 10 中设置应用程序图标角标(Badge)编号？

Question

问题:

我正在尝试在 iOS 10 中设置应用程序图标角标(Badge)编号，但它失败了。我了解 UIUserNotificationSettings 现在已在 iOS 中弃用，UNNotificationSettings 取而代之。

问题:

How do I modify the below code to use UNNotificationSettings to update the icon badge number in iOS 10? Or is there another concise method?

代码:

以下代码展示了我如何在 iOS 7 - iOS 9 中设置角标(Badge)。

let badgeCount: Int = 123
let application = UIApplication.sharedApplication()

if #available(iOS 7.0, *) {
    application.applicationIconBadgeNumber = badgeCount
}

if #available(iOS 8.0, *) {
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [.Badge], categories: nil))
    application.applicationIconBadgeNumber = badgeCount
}

if #available(iOS 9.0, *) {
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [.Badge], categories: nil))
    application.applicationIconBadgeNumber = badgeCount
}

if #available(iOS 10.0, *) {
    // ?????
}

Answer 1

您需要将 UserNotifications 实现到 AppDelegate 中。

import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

然后在 didFinishLaunchingWithOptions 中使用以下代码:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in
        if error != nil {
            //
        }
    }
    return true

}

Here您可以在通知主题上找到大量重要内容。

对于角标(Badge):

let content = UNMutableNotificationContent()
content.badge = 10 // your badge count