Android parsing json file

Question

Json string contained in String str:

{conf:{"quantity_uom":"l",price_uom:"euro",distance_uom:"km",consumption_uom:"km/l"}}

Code:

try{
        if (str!=""){
            this.json = new JSONObject(str);
            this.quantityUom=this.json.getString("quantity_uom");
            this.distanceUom=this.json.getString("distance_uom");
            this.priceUom=this.json.getString("price_uom");
            this.consumptionUom=this.json.getString("consumption_uom");             
        }
    }catch (Exception e) {
        throw e;
    }

I have returned No value for quantity_uom. How I am doing wrong? String contain the json text.

Thank you so much.

str!="" will not work Java/Android. Use this: !str.equals("") — WarrenFaith
– WarrenFaith, Commented Oct 6, 2011 at 10:52

anujprashar · Accepted Answer · 2011-10-06 10:55:42Z

4

try{
    if (!str.equals("")){
        Json obj = new JSONObject(str);
        this.json = obj.getJSONObject("conf");
        this.quantityUom=this.json.getString("quantity_uom");
        this.distanceUom=this.json.getString("distance_uom");
        this.priceUom=this.json.getString("price_uom");
        this.consumptionUom=this.json.getString("consumption_uom");             
    }
}catch (Exception e) {
    throw e;
}

You first have to get json object named 'conf' from string and from that json object get other values.

answered Oct 6, 2011 at 10:55

anujprashar

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Comments

Michell Bak · Accepted Answer · 2011-10-06 10:50:06Z

1

The JSON string is not correct.

Try this:

{"conf":{"quantity_uom":"l","price_uom":"euro","distance_uom":"km","consumption_uom":"km/l"}}

answered Oct 6, 2011 at 10:50

Michell Bak

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