public class EActivity extends Fragment {
    ArrayList<Countries> countries;
    JSONArray countryArray;
    Spinner e_country;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        MainActivity.fragmentName="eR";
        final View v= inflater.inflate(R.layout.activity_e,null);
        e_country=(Spinner)v.findViewById(R.id.txtECountry);
        progressDialog=new ProgressDialog(v.getContext());

        getCountry(v);
        return v;

    }
    void getCountry(final View view){

        progressDialog.setMessage("Loading, Please wait...");
        progressDialog.setIndeterminate(true);
        progressDialog.show();
        JsonObjectRequest objectRequest=new JsonObjectRequest(Request.Method.GET, ApiLinks.countryPoint, null,
                new  Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            String status = response.getString("status");
                            if(status.equals("success")){
                                countryArray=response.getJSONArray("country");
                                countries=new ArrayList<Countries>();
                                for(int i=0;i<countryArray.length();i++){
                                    JSONObject object=countryArray.getJSONObject(i);
                                    Countries country=new Countries();
                                    country.setId(object.getInt("id"));
                                    country.setName(object.getString("country"));
                                    countries.add(country);
                                }
                                ArrayAdapter<Countries> adapter=new ArrayAdapter<Countries>(view.getContext(),android.R.layout.simple_spinner_dropdown_item
                                ,countries);
                                e_country.setAdapter(adapter);
                                e_country.setPrompt("-- Select Country --");
                            }

                        }catch(Exception e){
                            Toast.makeText(view.getContext(),"Country not loaded.Please go back and try again.",Toast.LENGTH_SHORT).show();
                        }
                        progressDialog.cancel();
                    }

                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(view.getContext(),"Country not loaded.Please go back and try again.",Toast.LENGTH_SHORT).show();
                        progressDialog.cancel();
                    }
                });
        AppSingleton.getInstance(view.getContext().getApplicationContext()).addToRequestQueue(objectRequest,ApiLinks.REQUEST_TAG);
    }

<Spinner
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/txtECountry"
            android:layout_below="@+id/textView18"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:paddingTop="10dp"
            android:paddingBottom="10dp"
            android:layout_marginTop="8dp"
            android:layout_marginBottom="8dp"
            android:background="@drawable/textbox_style"/>