Parsing JSONArray to string array using SwiftyJSON

Question

Well I am really new Swift and I've used swiftyJSON to have an ease in parsing JSON data coming from the API.

I have a data response which looks like this:

[
   {
     "fname": < String value>
     "mname": < String value>
     "lname": < String value>
     "weights": [
          {
            "date": <String value>, 
            "weight": <String value> 
          },
          {
            "date": <String value>,
            "weight": <String value>
          }
]

For my swiftyJSON parsing way, here is my code

let swiftyJSON = JSON(data: data!)
for item in swiftyJSON.arrayValue{
    self.firstName = item["fname"].stringValue
    self.middleName = item["mname"].stringValue
    self.lastName = item["lname"].stringValue
    //JSON Array "weights" code snippet below
}

For the names I've parsed it to string but with the "weights". I have no idea how to do that. I've tried it using this:

for key in item["weights"]["weight"].arrayValue{
   self.allWeights.append(key.stringValue)
}

And it is not working. Can someone help me with this? thanks a lot.

I am using xcode 7.3 so it is swift 2.2 right?

Reginald
– Reginald

2016-10-21 04:07:30 +00:00
Commented Oct 21, 2016 at 4:07 — Reginald
– Reginald, Commented Oct 21, 2016 at 4:07

vadian · Accepted Answer · 2016-10-21 07:40:59Z

7

weights contains an array of dictionaries

...   
if let weights = item["weights"].array {
   for weightItem in weights {
     let date = weightItem["date"].stringValue
     let weight = weightItem["weight"].stringValue
     print(date, weight)
   }
 }

answered Oct 21, 2016 at 7:40

vadian

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2 Comments

Reginald Over a year ago

Thank you sir @vadian I cant still parsed it to string array but with your help I've already got the jsonarray dictionary. here is the snippet code image.prntscr.com/image/91e86ca71c474c28ae7b9199ecca65b0.png

Reginald Over a year ago

and here is the result image.prntscr.com/image/cbed3c440f2e4d21871b4539dd137ab0.png i've printed the weights and it got the jsonarray. But the following lines didn't parse it. Thank you so much!

Braden Holt · Accepted Answer · 2019-07-18 05:11:04Z

0

This may be a bit more of a swifty answer. What we're doing here is iterating over the json array using map and returning a dictionary object for each item in the array. The map function will of course create its own array and append each dictionary object to it, before returning the entire array stored in the weights variable. May brain is nearly fried so if I didn't get that quite right let me know.

let swiftyJSON = JSON(data: data!)
let weights = swiftyJSON["weights"].arrayValue.map {["date": $0["date"].stringValue, "weights": $0["weights"].stringValue]}

answered Jul 18, 2019 at 5:11

Braden Holt

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