CODEWITHSUNDEEP
androidjsonexception
hasiertxo
hasiertxo

Reputation: 263

JSonException with null value

I'm having lots of problems when parsing a JSon and one of it's values has null value.

{
"available_from" : "2012-11-05T00:00:00Z",
"available_to" : "2012-11-30T00:00:00Z",
"category_id" : 2,
"created_at" : "2012-11-05T14:53:39Z",
...
}

For example if "category_id" equals null I get an exception on my parser. What can I do to solve it?

Hope I've explained myself..

Upvotes: 2

Views: 3070

Answers (2)

meh
meh

Reputation: 22469

Before trying to get a value from the JSONObject you need to check if it has the key and if the value is not "null".

Add this If statement every time you try to access a certain key:

JSONObject jsonObject = new JSONObject(str);
if(jsonObject.has("category_id")&&!jsonObject.isNull("category_id")){
   String s = jsonObject.getString("category_id");      
}

Upvotes: 4

Warpzit
Warpzit

Reputation: 28152

Considered using GSON? It really simplifies JSON parsing. Also if you are using regular jsonobjects the values may not be null. Read the documentation for further info.

Upvotes: 1

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