Android: parsing json with 'null' values using Gson

Question

I got the following request from an Android developer:

Would you change the webservice back-end so that it returnes empty strings for empty fields instead of null.

The Android json parser converts null to a string containing "null".

The code:

import com.google.gson.Gson;
//...
private OrganizationSearchResult result;
//...
Gson gson = new Gson();
result = gson.fromJson(resultString, OrganizationSearchResult.class);

Is this a known issue?

If so, is there a known work-around for it?

I believe your Android developer is mistaken. Android's JSON APIs allow you to detect null and cope with it. — Jesse Wilson
– Jesse Wilson, Commented Mar 27, 2012 at 1:23

Josnidhin · Accepted Answer · 2012-03-26 10:22:43Z

2

I dont know what you are using for parsing the json and the JSONObject class in android sdk doesnt do that.

Take a look at the following class

http://developer.android.com/reference/org/json/JSONObject.html

Check out has and isNULL of the above method.

I think GSON automatically handles the null in json by converting them to java null.

edited Mar 26, 2012 at 10:22

answered Mar 26, 2012 at 9:42

Josnidhin

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Comments

Ravitheja · Accepted Answer · 2016-07-27 10:18:53Z

0

there will be a method isNull(key) in jsonObject to Determine if the value associated with the key is null or if there is no value, check with this and then call getString(key).

edited Jul 27, 2016 at 10:18

answered Mar 26, 2012 at 9:43

Ravitheja

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