My data are:
我的数据是：
{ "Users" : {
"Info" : {
"GLjqemedMVRK1mgZVpPaIOuMuNx1" : {
"adi" : "e e",
"aracMarkasi" : "HONDA",
"aracModeli" : "Civic",
"eposta" : "a@a.co",
"motorHacmi" : "1.6"
},
"SLtt56YlVsRfjrnAyBlUNdEakly2" : {
"adi" : "e g",
"aracMarkasi" : "SEAT",
"aracModeli" : "Leon",
"eposta" : "eg@gmail.com",
"motorHacmi" : "1.4 Tsi"
}
}
}
}
And then I retrieve data
然后我检索数据
let databseRef = FIRDatabase.database().reference(fromURL: "https://ffs.firebaseio.com/Users/Info/")
databseRef.queryOrderedByKey().observe(.childAdded, with: { snapshot in
let adi = snapshot.value(forKey: "adi")
let eposta = snapshot.value(forKey: "eposta")
let aracMarkasi = snapshot.value(forKey: "aracMarkasi")
let aracModeli = snapshot.value(forKey: "aracModeli")
let motorHacmi = snapshot.value(forKey: "motorHacmi")
})
It returns error:
它返回错误：
Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<FIRDataSnapshot 0x78f6d5b0> valueForUndefinedKey:]: this class is not key value coding-compliant for the key adi.'
How can I get data? Note that GLjqemedMVRK1mgZVpPaIOuMuNx1 and SLtt56YlVsRfjrnAyBlUNdEakly2 are users uid.
我怎样才能获得数据？请注意，GLjqemedMVRK1mgZVpPaIOuMuNx1和SLtt56YlVsRfjrnAyBlUNdEakly2是用户uid。
1 个解决方案
#1
2
Try :-
尝试： -
FIRDatabase.database().reference().child("Users/Info").observeSingleEvent(of: .childAdded, with: {(snap) in
if let snapDict = snap.value as? [String:AnyObject]{
for each in snapDict{
print(each)
let adi = each.value["adi"]
let eposta = each.value["eposta"]
let aracMarkasi = each.value["aracMarkasi"]
let aracModeli = each.value["aracModeli"]
let motorHacmi = each.value["motorHacmi"]
}
}
})
#1
2
Try :-
尝试： -
FIRDatabase.database().reference().child("Users/Info").observeSingleEvent(of: .childAdded, with: {(snap) in
if let snapDict = snap.value as? [String:AnyObject]{
for each in snapDict{
print(each)
let adi = each.value["adi"]
let eposta = each.value["eposta"]
let aracMarkasi = each.value["aracMarkasi"]
let aracModeli = each.value["aracModeli"]
let motorHacmi = each.value["motorHacmi"]
}
}
})