當我輸入一個Twitter應用程序一樣我從初始的錯誤返回,而不與初始化代碼變種裁判存儲的所有屬性代碼:FIRDatabaseReference!話說自裁判未初始化回報不初始化所有的存儲性能(self.ref未初始化)
import Foundation
import FirebaseDatabase
struct meme {
var ref: FIRDatabaseReference!
var key: String!
var username: String!
var name: String!
var tweetId: String!
var tweetText: String!
var tweetImageURL: String!
var tweeterImageURL: String
init(username: String, memeId: String, memeText: String, memeImageURL: String, memerImageURL: String, name: String, key: String = ""){
self.username = username
self.name = name
self.memeId = memeId
self.memeImageURL = memeImageURL
self.memeText = memeText
self.memerImageURL = memerImageURL
}
init(snapshot: FIRDataSnapshot){
self.name = snapshot.value!["name"] as! String
self.memerImageURL = snapshot.value!["memerImageURl"] as! String
self.memeText = snapshot.value!["memeText"] as! String
self.memeImageURL = snapshot.value!["memeImageURL"] as! String
self.username = snapshot.value!["username"] as! String
self.name = snapshot.value!["name"] as! String
self.ref = snapshot.ref
self.key = snapshot.key
}
func toAnyObject() -> [String: AnyObject]{
return ["name":name, "username":username, "memeText":memeText,"memeId":memeId,"memerImageURl":memerImageURL,"memeImageURL":memeImageURL]
}
}`
*提示:*如何是最後一個屬性定義與所有其他有什麼不同? - 請注意,Xcode在問題導航器中告訴你確切的問題。 –
從來沒有注意到,但在var ref:FIRDatabaseReference它說self.ref未初始化,但不適當的更新後的代碼的其餘部分 – almond