迭代Firebase阵列(Iterating Through Firebase Array)

 当我得到数据库的快照时，我看到了这个： 
 
{
    "9-17-2017" =     {
        "19:26:38" =         {
            1abA = 1ab;
            1abrA = 1;
            2abA = 2ab;
            2abrA = 2;
            3abA = 3ab;
            4abA = 4ab;
            5abA = 5a;
            6abA = 6ab;
            7abA = 7ab;
            Date = "9-17-2017";
            Time = "19:26:38";
            anA = an;
            apnA = apn;
            q1A = 1;
            q2A = 2;
            q3A = 3;
            q4A = 4;
            q5A = 5;
            q6A = 6;
        };
        "20:16:15" =         {
            1abA = 1qwe;
            1abrA = 3;
            2abA = "D.C.";
            2abrA = 7;
            3abA = wedded;
            4abA = wedge;
            5abA = qdwfeg;
            6abA = qwfegr;
            7abA = wedge;
            Date = "9-17-2017";
            Time = "20:16:15";
            anA = "we're";
            apnA = apn;
            q1A = 7;
            q2A = 2;
            q3A = 7;
            q4A = 4;
            q5A = 5;
            q6A = 7;
        };
    };
}
 
 我希望能够将标签设置为键1abA的值，但我似乎无法找到一种方法来对数组进行排序。 
 
 我正在使用此代码来获取快照： 
 
let userID = Auth.auth().currentUser?.uid
let ref = Database.database().reference().child("users").child(userID!) ref.child("PostGameEval").observe(.value, with: { (snapshot) in
            print(snapshot.value!)
        })

When I get a snapshot of the database I see this:
 
{
    "9-17-2017" =     {
        "19:26:38" =         {
            1abA = 1ab;
            1abrA = 1;
            2abA = 2ab;
            2abrA = 2;
            3abA = 3ab;
            4abA = 4ab;
            5abA = 5a;
            6abA = 6ab;
            7abA = 7ab;
            Date = "9-17-2017";
            Time = "19:26:38";
            anA = an;
            apnA = apn;
            q1A = 1;
            q2A = 2;
            q3A = 3;
            q4A = 4;
            q5A = 5;
            q6A = 6;
        };
        "20:16:15" =         {
            1abA = 1qwe;
            1abrA = 3;
            2abA = "D.C.";
            2abrA = 7;
            3abA = wedded;
            4abA = wedge;
            5abA = qdwfeg;
            6abA = qwfegr;
            7abA = wedge;
            Date = "9-17-2017";
            Time = "20:16:15";
            anA = "we're";
            apnA = apn;
            q1A = 7;
            q2A = 2;
            q3A = 7;
            q4A = 4;
            q5A = 5;
            q6A = 7;
        };
    };
}
 
I want to be able to set a label to the value of the key 1abA but I can't seem to figure out a way to sort through the array.
 
I am using this code to get the snapshot:
 
let userID = Auth.auth().currentUser?.uid
let ref = Database.database().reference().child("users").child(userID!) ref.child("PostGameEval").observe(.value, with: { (snapshot) in
            print(snapshot.value!)
        })

原文：https://stackoverflow.com/questions/46270028