Android JSON parsing of multiple JSONObjects inside JSONObject
I have a JSON string coming from the server and it looks like this:
{
"categories": {
"0": {
"term_id": "247",
"name": "Content Curation"
},
"1": {
"term_id": "50",
"name": "Content Marketing"
},
"2": {
"term_id": "2",
"name": "Curation"
},
"3": {
"term_id": "246",
"name": "Inbound Marketing"
},
"4": {
"term_id": "47",
"name": "Marketing"
},
"5": {
"term_id": "4",
"name": "News Curation"
},
"6": {
"term_id": "36",
"name": "SEO"
},
"8": {
"term_id": "248",
"name": "Wordpress Content Curation"
}
}
}
My task is to get values of the "term_id" and "name" fields. I've used to get the "categories" object from current JSONObject by using this code:
JSONObject jObject = new JSONObject(responceData);
JSONObject categoryObject = jObject.getJSONObject("categories");
JSONArray jarray = new JSONArray("["+categoryObject.toString().substring(1,categoryObject.toString().length() - 1) + "]");
for(int i=0;i<jarray.length();i++)
{
JSONObject jobj = jarray.getJSONObject(i);
String term_id=jobj.getString("term_id");
String name=jobj.getString("name");
}
and the categoryObject
looks like this:
{
"0": {
"term_id": "247",
"name": "Content Curation"
},
"1": {
"term_id": "50",
"name": "Content Marketing"
},
"2": {
"term_id": "2",
"name": "Curation"
},
"3": {
"term_id": "246",
"name": "Inbound Marketing"
},
"4": {
"term_id": "47",
"name": "Marketing"
},
"5": {
"term_id": "4",
"name": "News Curation"
},
"6": {
"term_id": "36",
"name": "SEO"
},
"8": {
"term_id": "248",
"name": "Wordpress Content Curation"
}
}
But after that I don't know how to get the fields. Is there any way to get all JSONObject children from the JSONObject?
If you have a source code or can give me an example please share it with me.
here you can retrieve all your json data, ask for a specific key and innerKey to get what you want, cheers
try
{
String jsonString="";//your json string here
JSONObject jObject= new JSONObject(jsonString).getJSONObject("categories");
Iterator<String> keys = jObject.keys();
while( keys.hasNext() )
{
String key = keys.next();
Log.v("**********", "**********");
Log.v("category key", key);
JSONObject innerJObject = jObject.getJSONObject(key);
Iterator<String> innerKeys = innerJObject.keys();
while( innerKeys.hasNext() )
{
String innerKkey = keys.next();
String value = innerJObject.getString(innerKkey);
Log.v("key = "+key, "value = "+value);
}
}
}
catch (JSONException e)
{ e.printStackTrace(); }
Check this answer , that way you don't need to know the keys, and can just loop through and access the inner object, but categories would be better as a JSONArray rather than an Object, that way you could just normally loop through
for(int i = 0; i < array.length(); i++) {
JSONObject obj = myArray.get(i);
....
}
Big thanks to Ahmad Dwaik and Tom Hart fot the answers. This is the code for solution.
try
{
JSONObject jObject= new JSONObject(responseData).getJSONObject("categories");
Iterator<String> keys = jObject.keys();
while( keys.hasNext() )
{
String key = keys.next();
Log.v("**********", "**********");
Log.v("category key", key);
JSONObject innerJObject = jObject.getJSONObject(key);
String name = innerJObject.getString("name");
String term_id = innerJObject.getString("term_id");
Log.v("name = "+name, "term_id = "+term_id);
}
}
catch (JSONException e){
e.printStackTrace();
}
Use the keys() iterator to iterate over all the properties, and call get() for each.
Iterator<String> iter = json.keys();
while (iter.hasNext()) {
String key = iter.next();
try {
Object value = json.get(key);
} catch (JSONException e) {
// Something went wrong!
}
}
See this : https://stackoverflow.com/a/13573965/2480911
try this
JSONObject jObject = new JSONObject(responceData);
JSONObject categoryObject = jObject.getJSONObject("categories");
JSONObject obj0 = categoryObject.getJSONObject("0");
String termId0 obj0.getString("term_id");
String name0 obj0.getString("name");
JSONObject obj1 = categoryObject.getJSONObject("1");
String termId1 obj1.getString("term_id");
String name1 obj1.getString("name");
but i agree with wqrahd, categories should be an array