在下拉菜单中显示类别

Question

通常，android微调器将提供一种从值列表中选择一项的快速方法，当我们单击或点击它时，它将显示一个包含所有值列表的下拉菜单。默认情况下，Android微调器将显示其当前选定的值，通过使用Adapter，我们可以将项目绑定到微调器对象。

         ArrayList CaregoryID = new ArrayList();
         ArrayList Category = new ArrayList();
         ArrayAdapter categoryAdapter;
        ============================================================
        HashMap<String, String> map = new HashMap<>();
        map.put("token", "");
        map.put("u_id", "");
        CaregoryID.add("0");
        Category.add("Select Category");
        appDialogs.showProgressDialog();
        callAPiActivity.doPost((Activity) mContext,Constant.URL, new GetApiResult() {
        @Override
      public void onSuccesResult(JSONObject result) throws JSONException {
                                    appDialogs.hideProgressDialog();
                                    JSONArray countryArray = result.getJSONArray("data");
                                    for (int i = 0; i < countryArray.length(); i++) {
                                        JSONObject countryObj = countryArray.getJSONObject(i);
                                        CaregoryID.add(countryObj.getString("id"));
                                        Category.add(countryObj.getString("abc"));
                                    }

                                    categoryAdapter = new ArrayAdapter(mContext, R.layout.simple_spinner_item, Category);
                                    categoryAdapter.setDropDownViewResource(android.R.layout.simple_list_item_1);
                                    spinnerCategory.setAdapter(categoryAdapter);

                                }

                                @Override
                                public void onFailureResult(String messgae) throws JSONException {
                                    appDialogs.hideProgressDialog();
                                    appDialogs.setErrorToast(messgae);
                                }

                                @Override
                                public void onNetworkRetry(String message) throws JSONException {

                                }

                            });