swift无法更新FCM令牌
如果有新的令牌可用,我将尝试更新我的FCM令牌。不幸的是,我遇到了以下错误: 隐式展开可选值时发现nil 这是我的密码:swift无法更新FCM令牌,swift,firebase,google-cloud-platform,firebase-cloud-messaging,Swift,Firebase,Google Cloud Platform,Firebase Cloud Messaging,如果有新的令牌可用,我将尝试更新我的FCM令牌。不幸的是,我遇到了以下错误: 隐式展开可选值时发现nil 这是我的密码: func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) { print("Firebase registration token: \(fcmToken)") let dataDict:[String: String] = ["token": f
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
let dataDict:[String: String] = ["token": fcmToken]
NotificationCenter.default.post(name: Notification.Name("FCMToken"), object: nil, userInfo: dataDict)
if Auth.auth().currentUser == nil{
}else{
if Auth.auth().currentUser!.uid == nil{
}else{
db.collection("Users").document(Auth.auth().currentUser!.uid).setData([ "fcm": fcmToken ], merge: true)
}
}
我想这是因为我的uid是零,但我在检查它之前,
currentUser
是可选的,但是currentUser
上的uid
不是。尝试安全地展开currentUser
,如下所示:
func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
print("Firebase registration token: \(fcmToken)")
let dataDict:[String: String] = ["token": fcmToken]
NotificationCenter.default.post(name: Notification.Name("FCMToken"), object: nil, userInfo: dataDict)
if let currentUser = Auth.auth().currentUser {
db.collection("Users").document(currentUser.uid).setData([ "fcm": fcmToken ], merge: true)
}
}
哪一行。。。。。。。。。。。。。。