java - 如何在 Spinner 中从 JSON 获取所选项目 id？

Question

如何从 Spinner 中的 JSON 获取 id？

如果我在微调器中选择项目，我想要获取城市 ID

示例:/image/aTCJ2.jpg ,如果我选择“ACEH BARAT”，我将获得 ID“512”

public void displayCities(List<CityResponse.City> cities) {
        for (CityResponse.City city : cities) {
            Log.d(TAG, city.getNama());
            spinnerItem.add(city.getNama());
            adapter.notifyDataSetChanged();
        }

    }

private void setSpinner(Context context){
        adapter = new ArrayAdapter<>(context, R.layout.spinner_item, spinnerItem);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mainBinding.spinnerCity.setAdapter(adapter);
        mainBinding.spinnerCity.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                String citySelected = parent.getItemAtPosition(position).toString();
                Toast.makeText(context, "City : " + citySelected, Toast.LENGTH_LONG).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                Toast.makeText(context, "Not Selected", Toast.LENGTH_LONG).show();
            }
        });
    }

Answer 1

您需要创建另一个数组列表来存储 id

 locationId.add(i, response.getData());

现在您需要在微调器中获取 Id

  spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {
                try {

                    selectedId = (String) locationId.get(position);


                } catch (Exception e) {

                }
            }

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

            }
        });