Question

我的问题是当我从autocompletetextview中选择状态时，它总是返回1作为id。但是我希望根据我的json显示相应的状态。示例（StateName = Assam然后StateId = 4）。但我总是将id设为1.我正在使用模型类设置id并从中获取。但是没有变化我将id作为1。如果有人知道我怎么能解决这个问题。那么请告诉我。提前谢谢。

This is my jsonResponce :-   

 {
      "ReplyCode": 1,
      "Message": "Franchisee and Plans List",

     "data2": [
        {
          "StateId": 1,
          "StateName": "Andaman and Nicobar Island",
          "CountryId": 1
        },
        {
          "StateId": 2,
          "StateName": "Andhra Pradesh",
          "CountryId": 1
        },
        {
          "StateId": 3,
          "StateName": "Arunachal Pradesh",
          "CountryId": 1
        },
        {
          "StateId": 4,
          "StateName": "Assam",
          "CountryId": 1
        },

这是我从json获取数据的方法： -

public void volleyStatedata() {

        if (mGeneralUtilities.isConnected()) {
            mProgressDialog.show();
            StringRequest stateRequest = new StringRequest(Request.Method.POST, GlobalData.REGISTER_DATA_URL,
                    new Response.Listener<String>() {
                        @Override
                        public void onResponse(String response) {


                            mProgressDialog.dismiss();

                            try {
                                JSONObject jsonObject = new JSONObject(response);
                                JSONArray jsonArray = jsonObject.getJSONArray("data2");
                                for (int i = 0; i < jsonArray.length(); i++) {
                                    PojoState pojoState = new PojoState();
                                    JSONObject jsonObject1 = jsonArray.getJSONObject(i);
                                    String stateId = jsonObject1.getString("StateId");
                                    String stateName = jsonObject1.getString("StateName");
                                    mStateList.add(stateName);
                                    mStateIdList.add(stateId);
                                    pojoState.setmStateList(mStateList);
                                    pojoState.setmStateId(stateId);
                                    mpojoStateList.add(pojoState);



                                }


                            } catch (JSONException e) {
                                e.printStackTrace();
                            }
                        }
                    },
                    new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError volleyError) {

                            Log.e("error", "" + volleyError.getMessage());


                        }
                    }) {
                @Override
                protected Map<String, String> getParams() throws AuthFailureError {

                    Map<String, String> params = new HashMap<String, String>();


                    return params;
                }
            };

            RequestQueue stateQueue = Volley.newRequestQueue(getContext());

            stateQueue.add(stateRequest);
        } else {

            mGeneralUtilities.showAlertDialog("Hey User !", "Please connect to the internet", "Ok");

        }
    }

这是我的适配器，我在autocompltetextview上应用onItemclick listner： -

 ArrayAdapter<String> mStateAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1, mStateList);
        mActState.setAdapter(mStateAdapter);
        mActState.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                mpojoStateList.get(i).getmStateId();


            }
        });

Answer 1

您的代码使用在i回调中返回的onItemClick，该回调是指您从自动完成列表中的可见项目中点击的项目，而不是原始列表。当您点击自动完成列表中的第一项i=0时，这意味着它始终会返回“{em> Andaman和Nicobar Island ”项目StateId=1。

在我的头顶，您可以从mStateAdapter获取项目字符串，并将其与您的mpojoStateList进行比较，然后找到相应的项目。（查看示例代码）

    final ArrayAdapter<String> mStateAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1, mStateList);
    mActState.setAdapter(mStateAdapter);
    mActState.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

            String itemName = mStateAdapter.getItem(i);

            for (PojoState pojo : mpojoStateList) {
                if (pojo.mStateName.equals(itemName)) {
                    String id = pojo.getmStateId(); // This is the correct ID
                    break; // No need to keep looping once you found it.
                }
            }
        }
    });

最好还是在PojoState对象中覆盖toString()方法并使其返回mStateName，然后将mpojoStateList传递给适配器必须做3 ArrayLists。这样，mStateAdapter.getItem(i)将返回PojoState对象而不是String，您可以使用其ID而不引用返回的位置（i）。

如何在android中获取Autocompletetextview的所选项目的ID？

1 个答案: