How to check if a json key exists?

Question

So, I get some JSON values from the server but I don\'t know if there will be a particular field or not.

So like:

{ \"regatta_name\":\"ProbaRegatta\"         


        

Answer 1

You can try this to check wether the key exists or not:

JSONObject object = new JSONObject(jsonfile);
if (object.containskey("key")) {
  object.get("key");
  //etc. etc.
}