我的主要错误是这样的:
“#selector的参数引用没有公开给Objective-C的实例方法'tokenRefreshNotification'”
这是我的AppDelegate:
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
let gcmMessageIDKey = "gcm.message_id"
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
GMSServices.provideAPIKey("appKey")
FIRApp.configure()
//Firebase
if #available(iOS 10.0, *) {
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(options: authOptions,
completionHandler: {_, _ in})
// For iOS 10 data message (sent via FCM)
FIRMessaging.messaging().remoteMessageDelegate = self
} else {
let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [ .alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
// Add observer for iNSTANCEid TOKEN REFRESH CALLBACK.
NotificationCenter.default.addObserver(self, selector: #selector(self.tokenRefreshNotification), name: .firInstanceIDTokenRefresh, object: nil)
// Override point for customization after application launch.
return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
}
// [START refresh_token]
func tokenRefreshNotification(_ notification: Notification)
{
if let refreshedToken = FIRInstanceID.instanceID().token() {
print("InstanceID Token \(refreshedToken)")
}
// Connect to FCM since connection may have failed when attempted before having a token
connectToFCM()
}
// [END refresh_token]
// [START connect_to_fcm]
func connectToFCM()
{
// Won't connect since there is no token
guard FIRInstanceID.instanceID().token() != nil else {
return
}
// Disconnect previous FCM connection if it exists
FIRMessaging.messaging().disconnect()
FIRMessaging.messaging().connect(completion: {(error) in
if error != nil {
print("Unable to connect with FCM \(error)")
} else {
print("Connected to FCM")
}
})
}
// [END connect_to_fcm]
错误行是这样的:
NotificationCenter.default.addObserver(self, selector: #selector(self.tokenRefreshNotification), name: .firInstanceIDTokenRefresh, object: nil)
如果我将@objc添加到tokenRefreshNotification中,则会收到一个新错误:
“方法不能为marker @ objc,因为参数类型无法在 objective-c 中表示”
最佳答案
选择器是错误的,应该是
NotificationCenter.default.addObserver(self, selector: #selector(tokenRefreshNotification:), name: .firInstanceIDTokenRefresh, object: nil)
选择器的末尾必须有一个“:”。
另外,方法签名似乎是错误的,应该是
@objc func tokenRefreshNotification(notification: Notification) {
下划线太多了。
关于ios - Firebase通知Swift 3,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/42798405/