CODEWITHSUNDEEP
iosjsonswift
SuperCoder
SuperCoder

Reputation: 262

Processing error with JSON data retrieved from yahoo weather

Im learning on how to write iOS code and I'm trying to write a weather application. Part of the JSON code that I retrieve from yahoo weather is:

      `"forecast":[
              {  
                 "code":"24",
                 "date":"2 Mar 2015",
                 "day":"Mon",
                 "high":"39",
                 "low":"16",
                 "text":"Partly Cloudy/Wind"
              }
         ]`

But for some reason, that part of the code has "[" and "]" symbol in it. Therefore my code is not able to get the data and store it in the NSDictionary. The iOS swift code I use to get data is:

               `if let forecast = item["forecast"] as? NSDictionary{

                        let highDay: AnyObject = forecast["high"]!
                        let lowDay: AnyObject = forecast["low"]!


                        high = String(highDay as NSString)
                        self.high.extend("˚")
                        println(high)

                        low = String(lowDay as NSString)
                        self.low.extend("˚")
                    }`

Im not having any issues with processing data blocks that doesn't have the "[" and "]" symbols. But I couldn't figure out this one. Are there any workarounds for this issue?

Upvotes: 0

Views: 241

Answers (1)

Jeremy Pope
Jeremy Pope

Reputation: 3352

forecast:[...] indicates that you are in a dictionary. That value for the forecast key in that dictionary item["forecast"] is not a dictionary, but an array. In JSON, [ ] is an array and { } is a dictionary.

In your exampled, the forecast array has only on item which is a dictionary. To get it you could try:

if let forecastArray = item["forecast"] as? NSArray {
    if let forecast = forecastArray[0] as? NSDictionary {
    }
}

Upvotes: 2

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