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I'm trying to parse weather information from a http://www.worldweatheronline.com JSON feed. This is the format that it comes in:

{ "data" : { "current_condition" : [ { "cloudcover" : "75",
        "humidity" : "100",
        "observation_time" : "10:01 PM",
        "precipMM" : "0.0",
        "pressure" : "1015",
        "temp_C" : "3",
        "temp_F" : "37",
        "visibility" : "4",
        "weatherCode" : "143",
        "weatherDesc" : [ { "value" : "Mist" } ],
        "weatherIconUrl" : [ { "value" : "http://www.worldweatheronline.com/images/wsymbols01_png_64/wsymbol_0006_mist.png" } ],
        "winddir16Point" : "N",
        "winddirDegree" : "360",
        "windspeedKmph" : "11",
        "windspeedMiles" : "7"
      } ],

So there is the current_condition JSONArray, which I have managed to obtain values from. But then how do I read the values from the inner arrays weatherDesc or weatherIconUrl?

Here is my code for reading precipMM, pressure, temp_C, etc:

String precipMM = null;
    try {
        JSONObject data = json.getJSONObject("data");

        JSONArray current_condition = data.getJSONArray("current_condition");

        for(int i = 0; i < current_condition.length(); i++) {
            precipMM = current_condition.getJSONObject(i).getString("precipMM");
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }
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Hey Matt, were you able to get this working without using Jackson library. I am stuck in similar situation. –  Noble6 May 2 '13 at 22:40
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2 Answers

up vote 2 down vote accepted

It's as simple as 

current_condition.getJSONArray()

As also with json parsing I would suggest looking at this library http://jackson.codehaus.org/

EDIT After you comment

The code you posted could be improved a lot. You are iterating through the array for each value. You can do the same thing with the array. Just call .getJsonArray(), instead of .getJsonObject(). However this means your code is throwing an error for each of the other values. I would again recommend the Jackson library

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I tried this, but it requires an int value, it doesn't take the "weatherDesc" string. So I used 9 as an int but that is out of range. –  Matt Harris Jan 11 '13 at 0:25
    
Alright thanks for your help, I'm new to JSON and I'm finding it very confusing. I'll play around a little and then check out the Jackson library. –  Matt Harris Jan 11 '13 at 0:36
    
I found it tricky at first. It's pretty simple once you get used to it. Essentially with jackson library you make the Java object and annotate the variables with the values you want to pull from the jsonobject. No messing about and it's quick –  jiduvah Jan 11 '13 at 0:39
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up vote 1 down vote

weatherDesc and weatherIconUrl are provided as array, so you can access by item i.e. inside a for loop.

Just use same command as you do it for current_condition

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A for loop inside the loop I already have? –  Matt Harris Jan 11 '13 at 0:28
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