答案 0 :(得分:1)
var collnum = ""
ref = Database.database().reference()
let collid = ref.child("collid").child("day")
collid.observeSingleEvent(of : .value, with : {(Snapshot) in
print(Snapshot)
if let snapDate = Snapshot.value as? String{
collnum = snapDate
print(snapDate)
}
})
答案 1 :(得分:0)
let database = FIRDatabase.database().reference()
database.child("collid").queryOrderedByKey().observe(.value, with:
{
if let value = snapshot.value as? [String: AnyObject]
{
let ui = value["day"] as! String
print(ui)
}
}
你可以做这样的事情来读取数据。这将从数据库中读取数据并放入数组中,以便您读取数据。