OnItemSelected not working on custom spinner adapter class

Question

I can populate my spinner with the array list from API. But unable to select or populate the selected item from spinner and display to the user.

The onItemSelected method does not get the position of the selected item in the spinner.

CustomSpinnerAdapter.java

public class CustomSpinnerAdapter extends BaseAdapter {
Context context;
List<String> userNames;
LayoutInflater inflter;

public CustomSpinnerAdapter(Context applicationContext, List<String> userNames) {
    this.context = applicationContext;
    this.userNames = userNames;
    inflter = (LayoutInflater.from(applicationContext));
}

@Override
public int getCount() {
    return userNames.size();
}

@Override
public Object getItem(int i) {
    return userNames.get(i);
}

@Override
public long getItemId(int i) {
    return 0;
}

@NonNull
@SuppressLint({"ViewHolder", "InflateParams"})
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
    view = inflter.inflate(R.layout.custom_spinner_item, null);
    CustomTextView names = (CustomTextView) view.findViewById(R.id.tv_spinner_item);
    names.setText(userNames.get(i));
    return view;
   }
}

My logic in fragment.

private SpinnerAdapter customAdapter;
private List<String> eqIds = new ArrayList<>;

 apiInterface = ApiRequest.createService(ApiInterface.class);
    Call<EquipmentTypeModel> call = apiInterface.getEquipmentType("application/json", token, id);

    call.enqueue(new Callback<EquipmentTypeModel>() {
        @Override
        public void onResponse(Call<EquipmentTypeModel> call, Response<EquipmentTypeModel> response) {
            if (response.isSuccessful()) {
                eqIds.addAll(response.body().getData().getEquipmentList().getEquipIds());
            }
        }

        @Override
        public void onFailure(Call<EquipmentTypeModel> call, Throwable t) {

        }
    });
    customAdapter = new CustomSpinnerAdapter(mContext, eqIds);
    spTypeModel.setAdapter(customAdapter);
    spTypeModel.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            Toast.makeText(mContext, String.valueOf(parent.getAdapter().getItem(position)), Toast.LENGTH_SHORT).show();
        }

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

        }
    });

Answer 1

To get the selected value from spinner you should you

String selectedValue = spTypeModel.getSelectedItem().toString();

or

String selectedValue = String.valueOf(parent.getAdapter().getItem(position));

instead of

String selectedValue = String.valueOf(position);

Update: Change getItem method in your custom adapter to

@Override
public Object getItem(int i) {
    return userNames.get(i);
}

Update 2: I saw your problem, please change your code.

private SpinnerAdapter customAdapter;

to

private CustomSpinnerAdapter customAdapter;

then add this line after you add new data to your adapter.

eqIds.addAll(response.body().getData().getEquipmentList().getEquipIds());
customAdapter.notifyDataSetChanged(); // Add this line to notify your adapter about new data

Update 3: From your xml file, because your spinner height is 18dp.

• In spinner you set padding to 4dp (will be 8dp for top and bot)
• In custom text view you also set padding 4dp (will be 8dp for top and bot)
• So you only have equal or less than 2dp to display text content, it really small that why you can't see the content.

You can set your spinner height to wrap_content or keep current height but remove padding from spinner or from the custom text view. It's up to you.

Answer 2

Try if this works (It will show you the value, not the position)

  @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(mContext, parent.getItemAtPosition(position).toString(), Toast.LENGTH_SHORT).show();
    }