嗨,那裏我是最新的快速。我正在使用2層層次結構的Firebase數據庫以及每個節點的許多子節點。我得到第一層(描述,enddata和其他),但我stll無法獲得新聞節點。是在3到5個隨機密鑰。我播種了很多問題,但對我來說仍然沒有問題。無法獲取Firebase兒童的節點
我明白我做錯了,但是什麼?
的火力地堡是:
我需要撤退的消息孩子
結構是
struct ICONews {
let ICOId: String
let news1: String
let news2: String
let news3: String
init?(ICOId: String, dict: [String: Any]) {
self.ICOId=ICOId
guard let news1 = dict[""] as? String,
let news2 = dict[""] as? String,
let news3 = dict[""] as? String
else { return nil }
self.news1 = news1
self.news2 = news2
self.news3 = news3
}
}
struct NewsSnapShot {
let posts: [ICONews]
init?(with snapshot: DataSnapshot) {
var posts = [ICONews]()
guard let snapDict = snapshot.value as? [String: [String: Any]] else { return nil }
for snap in snapDict {
guard let post = ICONews (ICOId: snap.key, dict: snap.value) else {continue}
posts.append(post)
}
self.posts=posts
}
}
級數據庫的
class DatabaseService {
static let shared = DatabaseService()
private init(){}
let ICOReference = Database.database().reference()
}
和撤退方法
DatabaseService.shared.ICOReference.child("news").observe(DataEventType.value, with: { (snapshot) in
guard let postsSnapShot = ICOSnapShot(with: snapshot) else {return}
})
我試圖做這樣的,但 – Eugeny
您的節點 「-KtqP2YmNO2FjIW5DiPT」,是因爲汽車的編號,你可以通過靜態文本作爲基節點。或者您可以跟蹤的動態節點。像數字。 – Max