Change Spinner based on another Spinner Selection

Question

I have string array which contains all the country names and another string array with respective country codes. I am setting the country names string to spinner. When I sel

Answer 1

String[] countries = {"INDIA","DUBAI","KSA"};
        String[] country_code = {"91","971","966"};

        final Spinner spinnerCountry = (Spinner)findViewById (R.id.spinnerCountry);
        final Spinner spinnerCountryCode = (Spinner) findViewById (R.id.spinnerCountryCode);

        ArrayAdapter<String> countryAdapter =  new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,countries);

        ArrayAdapter<String> countryCodeAdapter =  new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,country_code);

        spinnerCountry.setAdapter(countryAdapter);
        spinnerCountryCode.setAdapter(countryCodeAdapter);
        
        spinnerCountry.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long arg3) {
                spinnerCountryCode.setSelection(position);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                
            }
            
        });
        
        spinnerCountryCode.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long arg3) {
                
                spinnerCountry.setSelection(position);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                
            }
            
        });

Here is some code that may fix your problem.

Explanation:

Assuming you have two spinners R.id.spinnerCountry and R.id.spinnerCountryCode.

As you can see i created two arrays which contains countryName and countryCode respectively.

Work Flow:-

When i select one item in a Spinner then the other spinner loads with another item corresponding to the position.

The code is Self-Explanatory!

Answer 2

String businesstype_array[] = {"Retail", "Vendor","Agriculture" };

public static final String JSON_STRING = "{\"Retail\":[\"General Stores\",\"Clothing\",\"Electronics\",\"Mobile Phones\"],\"Vendor\":[\"Gas agency\",\"newspaper\",\"vendor\",\"milk vendor\",\"laundry\"],\"Agriculture\":[\"lGas agency\",\"lnewspaper\",\"lvendor\",\"lmilk vendor\",\"llaundry\"]}";

ArrayAdapter adapter_business = new ArrayAdapter(getActivity(), R.layout.singlerow_businesstype_spinner, businesstype_array); businesstype.setAdapter(adapter_business);

    businesstype.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

            Log.d("jsonntring", "out tryy");
            try {
                Log.d("jsonntring", "in tryy");


                jsonObject = new JSONObject(JSON_STRING);
                Log.d("jsonntring", jsonObject.toString() + "length==" + jsonObject.length());


                JSONArray jsonarray = jsonObject.getJSONArray(businesstype.getSelectedItem().toString());

                Log.d("jsonarray&", jsonarray.toString());

                businesstype__subtype.clear();
                for (int j = 0; j < jsonarray.length(); j++) {
                    String s = jsonarray.getString(j);

                    businesstype__subtype.add(s);

                    Log.d("jsonarray&", jsonarray.toString());

                }

                ArrayAdapter adapter_sub_business = new ArrayAdapter(getActivity(), R.layout.singlerow_businesstype_spinner, businesstype__subtype);
                business_subtype.setAdapter(adapter_sub_business);

            } catch (JSONException e)
            {
                Log.d("jsonntring_exce", e.toString());

            }


        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {

        }
    });