ios - Swift ios 检查是否在 ios9 和 ios10 中启用了远程推送通知

Question

如何检查用户是否在 ios 9 或 ios 10 上启用了远程通知？

如果用户不允许或单击“否”，我想切换一条消息，询问他们是否要启用通知。

Answer 1

Apple 建议使用 UserNotifications 框架而不是共享实例。所以，不要忘记导入 UserNotifications 框架。由于此框架是 iOS 10 中的新框架，因此只有在为 iOS10+ 构建的应用程序中使用此代码才是安全的

let current = UNUserNotificationCenter.current()

current.getNotificationSettings(completionHandler: { (settings) in
    if settings.authorizationStatus == .notDetermined {
        // Notification permission has not been asked yet, go for it!
    } else if settings.authorizationStatus == .denied {
        // Notification permission was previously denied, go to settings & privacy to re-enable
    } else if settings.authorizationStatus == .authorized {
        // Notification permission was already granted
    }
})

您可以查看官方文档以获取更多信息:https://developer.apple.com/documentation/usernotifications