我有一个Firebase引用,我想更新Firebase的引用,但是当我尝试使用Could not cast value of type '__NSCFBoolean' (0x2106be078) to 'NSDictionary'
我的裁判在下面看起来像这样
Database.database().reference(forLastMsg: championId).child(toID).updateChildValues(withValues)
Database.database().reference(forLastMsg: toID).child(championId).updateChildValues(withValues)
即使使用setValue
也会使应用程序崩溃。
实际上,我一直在不断列出已更新的引用,例如valueChange
for snapshot in snapshot.children {
let receivedMessage = (snapshot as! DataSnapshot).value as!
NSDictionary
...
答案 0 :(得分:1)
您必须以这种方式更新
let updateDatabase = databaseReference.child("something").child(someId)
let data = [
"boolValue": myBoolean,
"dateUpdated": Date().toSeconds()
] as [String : Any]
updateDatabase.updateChildValues(data)
答案 1 :(得分:0)
要更新
let newVal = //// some dictionary
// you may add komal_xyz as dynamic according to your logic
Database.database().reference().child("komal_xyz/\(id)").updateChildValues(newVal) { (err, ref) in
}
听
Database.database().reference().child("komal_xyz/\(id)").observe(.value) { (ref) in
//
let res = ref.value as! [String:Any]
}