android - Manually parse a portion of dynamic JSON object alongside Gson deserializer -

i want parse following json response dynamic json object,

{   "id": 1,   "last_login": "2016-07-16t12:46:29.621996z",   "point_of_sales": [     {       "counter 4": {         "type": "retail",         "id": 6       }     },     {       "counter 5": {         "type": "retail",         "id": 7       }     },     {       "counter 6": {         "type": "retail",         "id": 8       }     }   ] } 

here objects name inside "point_of_sales" array dynamic makes difficult parse using gson. here's i've tried far,

@serializedname("id") @expose private integer id; @serializedname("last_login") @expose private string lastlogin; @serializedname("point_of_sales") @expose private list<map<string, counter>> pointofsales = new arraylist<map<string, counter>>();  .......  getter & setters 

counter class,

@serializedname("type") @expose private string type; @serializedname("id") @expose private integer id;  .......  getter & setters 

by following procedure can convert objects can't extract them map pojo classes.

 (map<string, counter> objectmap : response.getpointofsales()) { // how extract counter pojo data map list? } 

i tried way nothing works,

arraylist<counter> pojos = new arraylist<counter>();                     try {                         (map<string, counter> objectmap : result.getpointofsales()) {                             counter pojo = new counter();                             (map.entry<string, counter> property : objectmap.entryset()) {                                 method setter = counter.class.getmethod("set" + property.getkey().substring(0, 1).touppercase() + property.getkey().substring(1), property.getvalue().getclass());                                 setter.invoke(pojo, property.getvalue());                             }                             pojos.add(pojo);                         }                     } catch (exception e) {                         e.printstacktrace();                     }                      (counter pojo : pojos) {                         log.e("result", "" + pojo.getid() + " " + pojo.gettype());                     } 

is there way parse specific array using,

1. gson

2. using duel parsing technique parse specific portion manually , rest of response in gson?

i want make dynamic objects wrapped pojo class.

you need 2 things.

1. you need little bit of refactoring on model classes.
2. you need add jsondeserializer handle dynamic parsing.

here's how it:

mainobject.java

..... @serializedname("point_of_sales") salespoints msales points ..... 

salespoints.java

private list<counter>mcounters; //getter & setters. 

counter.java

serializedname("type") private string type; @serializedname("id") private int id; // use primitives instead of boxed primitives private string mcounterstring; // maybe need it. 

now when run parsing you'll have this:

 mainobject object = new gsonbuilder().registertypeadapter(salespoints.class, new jsondeserializer< salespoints >() {         @override         public salespoints deserialize(jsonelement json, type typeoft, jsondeserializationcontext context) throws jsonparseexception {             salespoints sales = new salespoints();             arraylist<counter>counters = new arraylist<counter>();             jsonarray salesjson = json.getasjsonarray();             for(jsonelement object : json.getasjsonarray()) {                    iterator<map.entry<string,jsonelement>> iterator = object.getasjsonobject().entryset().iterator();                    while (iterator.hasnext())){                           map.entry<string,jsonelement> entry = iterator.next();                             string counterstring = entry.getkey();                             jsonelement counterobject =                                                      entry.getvalue();                             counter counter = context.deserialize(counterobject, counter.class);                             counter.setcounterstring(counterstring);                             counters.add(counter);                         }                       }             sales.setcounters(counters);             return sales;         }     }).create().fromjson(thejson); 

now when mainobject parsed contain salespoints contains counters.

note: might misspelled words, or might forgot add getas.. methods because didn't have possibility test code, way go , can debug it.

edit

for retrofit you'll need this:

gson gson = new gsonbuilder().registertypeadapter(salespoints.class, new jsondeserializer< salespoints >() {         @override         public salespoints deserialize(jsonelement json, type typeoft, jsondeserializationcontext context) throws jsonparseexception {             salespoints sales = new salespoints();             arraylist<counter>counters = new arraylist<counter>();             jsonarray salesjson = json.getasjsonarray();             for(jsonelement object : json.getasjsonarray()) {                    iterator<map.entry<string,jsonelement>> iterator = object.getasjsonobject().entryset().iterator();                    while (iterator.hasnext())){                           map.entry<string,jsonelement> entry = iterator.next();                             string counterstring = entry.getkey();                             jsonelement counterobject =                                                      entry.getvalue();                             counter counter = context.deserialize(counterobject, counter.class);                             counter.setcounterstring(counterstring);                             counters.add(counter);                         }                       }             sales.setcounters(counters);             return sales;         }     }).create();   new retrofit.builder().addconverterfactory(gsonconverterfactory.create(gson))//set remaining things fro retrofit builder.