Convert a set of String values to JSON object in Android

Question

I have string values I just want to convert all the values in json format

I have tried is coming only key and value format

JSONObject defaul = guard.getJSONObject("default");
defaul.put("security_id", Helper.loadSavedPreferences(getApplicationContext(), "security_id"));
defaul.put("location", work_location);
defaul.put("type_of_service", type_of_service);
defaul.put("type_of_service", type_of_service);
defaul.put("log_date", date);`

I want the json format like below

{
"sample": {
    "0": {
        "time": "5.00PM",
        "occurence": "fsdfdsfsdfdsfsdf sdfsdfsdfsdf sdsdfsdf",
        "sir_ref": "dsfsdf5"
    },
    "1": {
        "time": "6.00AM",
        "occurence": "fsdfdsfsdfdsfsdf sdfsdfsdfsdf sdsdfsdf",
        "sir_ref": "dsfsdf5"
    },
    "default": {
        "security_id": "id",
        "location": "location",
        "type_of_service": "S",
        "log_date": "2014-07-20",
        "log_day": "monday",
        "log_st_time": "10.00AM",
        "log_end_time": "10.00AM",
        "name": "xyz",
        "signature": "xyz",
        "licence_no": "A12456asd",
        "dog_name": "Puppy",
        "id_card_no": "2342343243d",
        "coc_no": "fsdfsdfs23"
    },
    "crib": {
        "crib_st_time1": "10.00AM",
        "crib_end_time1": "10.00AM",
        "crib_st_time2": "10.00AM",
        "crib_end_time2": "10.00AM"
    }
},
"msg": "Success"
}

can any one help to solve this problem.

you want to create a JSONObject or convert that string to a JSONObject? — José Barbosa
– José Barbosa, Commented Aug 1, 2014 at 17:21
i want to convert the string to json object like above format — John
– John, Commented Aug 1, 2014 at 17:28

Alécio Carvalho · Accepted Answer · 2014-08-01 17:26:49Z

3

You can use Gson it helps you working with JSON in several ways...an example is you put your values into a Map and do the following:

  Map<String, String> valuesMap = new HashMap<String, String>();
  valuesMap.put("key1", "value1");
  valuesMap.put("key2", "value2");

 Gson gson = new GsonBuilder().create();
 String json = gson.toJson(valuesMap);

 System.out.println(json);

It will give the following output in JSON format:

 {"key1":"value1","key2":"value2"}

NOTE: Gson is so powerful that you're not limited to Map, you can also use your own complex objects (ValueObjects e.g. JavaBeans) and it will handle it.

answered Aug 1, 2014 at 17:26

Alécio Carvalho

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1 Comment

Alécio Carvalho Over a year ago

this site is to help and assist your on using the best tools and techniques to build your own solutions. NOT to give you an easy copy&paste solution. The data you expect is perfectly suitable to be placed in a Map format and then easily converted into a JSON, as shown. Good Luck!

Lal · Accepted Answer · 2014-08-01 17:28:02Z

0

See this link for more details.

Try this

JSONObject obj = new JSONObject();
  LinkedHashMap m1 = new LinkedHashMap();
  LinkedList l1 = new LinkedList();
  obj.put("k1", "v1");
  obj.put("k2", m1);
  obj.put("k3", l1);
  m1.put("mk1", "mv1");
  l1.add("lv1");
  l1.add("lv2");
  m1.put("mk2", l1);

  obj.writeJSONString(out);
  System.out.println("jsonString:");
  System.out.println(out.toString());
  String jsonString = obj.toJSONString();
  System.out.println(jsonString);

This returns a string as follows

{"k3":["lv1","lv2"],"k1":"v1","k2":{"mk1":"mv1","mk2":["lv1","lv2"]}}
{"k3":["lv1","lv2"],"k1":"v1","k2":{"mk1":"mv1","mk2":["lv1","lv2"]}}

answered Aug 1, 2014 at 17:28

Lal

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