How can I loop through an object in SwiftyJSON? not just with swift

Question

var tempJSON:JSON = ""
tempJSON = JSON(self.userdefaults.string(forKey: "currentOrder"))
print(tempJSON)

yields:

{"7": "1", "21": "0", "20": "0", "3": "1"}

I need to be able to loop through this and just can't. I've tried.

for(key,value) in tempJSON{
       print(key)

            }

and nothing outputs....

Thanks

do `tempJSON.enumerated()` or simply just do `for item in tempJSON{ print(item)` <-- this won't give you the index, if you want the **index** then you must do use `enumerated()` — mfaani, Mar 15 '17 at 02:21
Possible duplicate of [swift for loop: for index, element in array?](http://stackoverflow.com/questions/24028421/swift-for-loop-for-index-element-in-array) — mfaani, Mar 15 '17 at 02:49
Why does it not working? it working fine for me, dont need `enumerated()` since its `(key,value)` pair, not `(index,value)` pair — Tj3n, Mar 15 '17 at 02:49

chengsam · Answer 1 · 2017-03-15T03:14:07.730

1

Try getting Data from the string and use it to init the JSON object:

let jsonString = "{\"7\": \"1\", \"21\": \"0\", \"20\": \"0\", \"3\": \"1\"}"
if let dataFromString = jsonString.data(using: .utf8, allowLossyConversion: false) {
    let tempJSON = JSON(data: dataFromString)
    print(tempJSON)

    for (key, value) in tempJSON {
        print(key)
        print(value.stringValue)
    }
}

edited Mar 15 '17 at 03:14

answered Mar 15 '17 at 02:52

chengsam

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@BostonMacOSX I have tried using a string and it worked for me. Try to check if your user defaults is returning the correct string. – chengsam Mar 15 '17 at 03:15

score 0 · Answer 2 · answered Mar 15 '17 at 02:45

0

Just do:

for(key,value) in tempJSON.enumerated(){
   print(key)
}

answered Mar 15 '17 at 02:45

mfaani

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Don't need enumerated for printing JSON object, his code is correct, problem maybe lying elsewhere – Tj3n Mar 15 '17 at 02:54

score 0 · Answer 3 · answered Mar 15 '17 at 02:59

0

My best guess is that you are getting a string out from your userdefault and use it to init JSON, try change:

tempJSON = JSON(self.userdefaults.string(forKey: "currentOrder"))

to

tempJSON = JSON(self.userdefaults.dictionary(forKey: "currentOrder"))

answered Mar 15 '17 at 02:59

Tj3n

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Probably your userdefault value is not correct, tried with an Dictionary or Data like changesam answer both working – Tj3n Mar 15 '17 at 03:39
so how would I get the string I posted above to the dictionary? – BostonMacOSX Mar 15 '17 at 12:33

score 0 · Answer 4 · answered Mar 15 '17 at 16:20

0

SOLUTION I had to add the parseJSON: to the JSON method so as to tell that is was coming from a string literal.

var tempJSON:JSON = ""
tempJSON = JSON(parseJSON: self.userdefaults.string(forKey: "currentOrder"))
print(tempJSON)

answered Mar 15 '17 at 16:20

BostonMacOSX

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How can I loop through an object in SwiftyJSON? not just with swift

4 Answers4