swift - Retrieving an array from Firebase -

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• how retrieve objects firebase key value 2 answers

i have array in firebase composed of 1's , 0's (true , false basically), stored separate key/value pairs. retrieve them firebase , append each value array in swift.

i have tried (found elsewhere on so) not working.

let ref = firebase(url:"https://<<unique>>.firebaseio.com/users/\(self.uuid)/scorearray")     ref.observesingleeventoftype(.value, withblock: { snapshot in         if snapshot.value nsnull {             print("snap null")         } else {             let enumerator = snapshot.children             while let rest = enumerator.nextobject() as? fdatasnapshot {                 self.scorearray.append(rest.value! as! string)             }         }     }) 

it doesn't crash, doesn't fill array, though if print(rest.value) give me array.

so guess question is, how convert rest.value usable form?

edit firebase structure requested.

66ec8ac4-<<rest of uuid>>      creation_date: "jun 10, 2016"          extra_quiz_1              q1: "a"              q10: "b"              <<continues>>              scorearray                  0: "0"                  1: "1"                  2: "0"                  3: "0"                  <<continues>> 

working array's in firebase challenging , in general there better options structure data.

in use case, may work here's how it's done.

given structure similar yours:

quiz_0   quiz_name: planets   scores      0: mercury      1: venus      2: earth 

here's how read in data

    let quizzesref = self.myrootref.childbyappendingpath("quizzes")      quizzesref.observeeventtype(.value, withblock: { snapshot in          child in snapshot.children {             let quiz_name = child.value["quiz_name"] as! string             print(quiz_name)             let scores = child.value["scores"] as! nsarray             print(scores) //scores array             let answer0 = scores[0] //just demonstrate accessing array             print(answer0)         }     }) 

and output

planets (     mercury,     venus,     earth ) mercury 

that being said, don't use arrays. here's suggestion may far more flexible. renumbering questions snap, modifying question or answer easy well. -asidijaid keys generated using childbyautoid - helps disassociate dynamic data static keys.

quiz_0   quiz_name: planets   quiz_data     -asok99idkasdsl        question_number: 0        question: planet closet sun?        answer: mercury     -yklaosokjdinoisd        question_number: 1        question: rocky planet hotter mercury        answer: venus     -klkooksow999sdd        question_number: 2        question: third planet sun        answer: earth