How To Get Spinners Selected Item's Id That Comes From Json

I have two spinners that second spinner's value depend on the first spinner. every item in spinner has an id that came from JSON. Now, I want to get second spinner's item id. I get

Solution 1:

You have to create a Listener for cities too:

spinner_city.setOnItemSelectedListener(citiesListener);

Then with this code you are able to get the cityId

privateAdapterView.OnItemSelectedListener citiesListener = newAdapterView.OnItemSelectedListener() {
        @OverridepublicvoidonItemSelected(AdapterView<?> parent, View view, int position, long id) {
            String citySelected = spinner_city.getItemAtPosition(position).toString();
            String provinceSelected = spinner_province.getSelectedItem().toString();
            for(Map.Entry<String, ResponseJSON> e : responseJson.entrySet())
            {
                if(e.getKey().equals(provinceSelected)){
                    for(City c : e.getValue().getCity()){
                        if(citySelected.equals(c.getCityName())){
                            tv_city_id.setText(String.format("City id for %s is %s", citySelected, c.getCityId()));
                        }
                    }
                }
            }
        }

        @OverridepublicvoidonNothingSelected(AdapterView<?> parent) {

        }
    };

Solution 2:

can replace activity full code

publicclassMainActivityextendsAppCompatActivity {

        privateApiInterface apiService;
        privateSpinner spinner_province;
        privateSpinner spinner_city;
        privateArrayAdapter<String> provinceAdapter;
        privateArrayAdapter<String> cityAdapter;
        privateArrayList<String> provincesList = newArrayList<>();
        privateArrayList<String> citiesList = newArrayList<>();
        privateArrayList<String> citiesIdList = newArrayList<>();
        privateMap<String, ResponseJSON> responseJson;


        @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            initUI();

            apiService = ApiClient.getClient().create(ApiInterface.class);

            Call<Map<String, ResponseJSON>> call = apiService.getProvinceAndCity();
            call.enqueue(newCallback<Map<String, ResponseJSON>>() {
                @OverridepublicvoidonResponse(Call<Map<String, ResponseJSON>> call, Response<Map<String, ResponseJSON>> response) {
                    responseJson = response.body();
                    for (Map.Entry<String, ResponseJSON> e : responseJson.entrySet()) {
                        provincesList.add(e.getKey());

                        for (City c : e.getValue().getCity()) {
                            citiesList.add(c.getCityName());
                        }
                    }
                    createAdapter();
                }

                @OverridepublicvoidonFailure(Call<Map<String, ResponseJSON>> call, Throwable t) {

                }
            });
        }

        privatevoidinitUI() {
            spinner_city = findViewById(R.id.spinner_cities);
            spinner_province = findViewById(R.id.spinner_provinces);
        }

        privatevoidcreateAdapter() {

            provinceAdapter = newArrayAdapter<String>(this,
                    android.R.layout.simple_spinner_dropdown_item, provincesList);

            provinceAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner_province.setAdapter(provinceAdapter);
            cityAdapter = newArrayAdapter<String>(this,
                    android.R.layout.simple_spinner_dropdown_item, citiesList);

            cityAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner_city.setAdapter(cityAdapter);

            spinner_province.setOnItemSelectedListener(provinceListener);

            spinner_city.setOnItemSelectedListener(citiesListener);


        }

        privateAdapterView.OnItemSelectedListener provinceListener = newAdapterView.OnItemSelectedListener() {
            @OverridepublicvoidonItemSelected(AdapterView<?> parent, View view, int position, long id) {
                citiesList.clear();
                citiesIdList.clear();
                String provinceSelected = spinner_province.getItemAtPosition(position).toString();
                for (Map.Entry<String, ResponseJSON> e : responseJson.entrySet()) {
                    if (e.getKey().equals(provinceSelected)) {
                        for (City c : e.getValue().getCity()) {
                            citiesList.add(c.getCityName());
                            citiesIdList.add(c.getCityId());


                        }
                    }
                }
                cityAdapter.notifyDataSetChanged();
            }

            @OverridepublicvoidonNothingSelected(AdapterView<?> parent) {

            }
        };


        privateAdapterView.OnItemSelectedListener citiesListener = newAdapterView.OnItemSelectedListener() {
            @OverridepublicvoidonItemSelected(AdapterView<?> parent, View view, int position, long id) {
                int city_id = Integer.parseInt(citiesIdList.get(position));
                Log.i("your_city_id", String.valueOf(city_id));

            }

            @OverridepublicvoidonNothingSelected(AdapterView<?> parent) {

            }
        };

    }