iOS 9推送通知dyld`dyld_fatal_error：

Question

我在iOS设备上运行时收到推送通知错误。iOS的版本是9。在Xcode中，我的部署目标也设置为9.0。下面是我的AppDelegate代码，我还附上了error..Kindly帮助的快照

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
    UIApplication.shared.registerForRemoteNotifications()
    return true
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    var token = ""
    for i in 0..<deviceToken.count {
        token = token + String(format: "%02.2hhx", arguments: [deviceToken[i]])
    }
    print("Registration succeeded! Token: ", token)
}

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    print("APNs registration failed: \(error)")
}
func showAlertAppDelegate(title: String,message : String,buttonTitle: String,window: UIWindow){
    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
    alert.addAction(UIAlertAction(title: buttonTitle, style: UIAlertActionStyle.default, handler: nil))
    window.rootViewController?.present(alert, animated: false, completion: nil)
}

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Answer 1

尝试将token到String的转换替换为以下行：

let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})

我建议您使用异常断点来获取有关错误的更多信息。下面是a link如何使用它。