Issue with android TextWatcher with spinners

[ian bilgaen]

I have a small unit converter.
It has 2 edittexts and two spinners.
The user needs to input a value (edittext 1) and choose to convert from one unit (spinner 1) to another unit (spinner 2).
The problem is that the converted value (edittext 2) only works when the input is changed,
when the user selects different units for the spinner the converted value (edittext 2) doesn't change. Any solution?

See the two pictures as example. (mm to km, mm to mm - no changes to eddittext 2)

[ian bilgaen]

#Edit1 ignore the button.

[John Joe]

We need to see your code here

[ian bilgaen]

The above code has some useless code in it I updated it.

package com.mastercard.bilginemin.formulesberekenen;


import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;

import butterknife.BindView;
import butterknife.ButterKnife;

import static java.lang.Double.parseDouble;


/**
 * A simple {@link Fragment} subclass.
 */
public class DerdeFragment extends Fragment {
    private static final String TAG = "Tab3Fragment";

    //Variabels declareren
    Spinner spWaardeVan, spWaardeNaar;
    EditText etWaardeVan, etWaardeNaar;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.derde_fragment, container, false);
        ButterKnife.bind(getActivity());

        // An adapter to convert the String[] array from @strings.xml into something that can go into the Spinner
        ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), R.array.eenheden, android.R.layout.simple_spinner_item);
        //set the view that will be shown when a user taps on a Spinner and the dropdown appears with all of the options
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        //Variabels assignen
        spWaardeVan = (Spinner) view.findViewById(R.id.spWaardeVan);
        spWaardeNaar = (Spinner) view.findViewById(R.id.spWaardeNaar);
        etWaardeVan = (EditText) view.findViewById(R.id.etWaardeVan);
        etWaardeNaar = (EditText) view.findViewById(R.id.etWaardeNaar);

        //set the Spinner’s adapter to be the adapter we created
        spWaardeVan.setAdapter(adapter);
        spWaardeNaar.setAdapter(adapter);

        etWaardeVan.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            /**
             *  When the text changes the answer changes. When the spinner value changes
             *  the answer stays the same. -> problem
             */
            @Override
            public void afterTextChanged(Editable editable) {
                // get spinner and edittext value
                String strspWaardeVan = (String) spWaardeVan.getSelectedItem();
                String strspWaardeNaar = (String) spWaardeNaar.getSelectedItem();
                Double dbetWaardeVan = Double.parseDouble(!etWaardeVan.getText().toString().isEmpty() ?
                        etWaardeVan.getText().toString() : "0");


                /**Convert the strings to something in our Unit enu
                 */
                Converter.Eenheid vanEenheid = Converter.Eenheid.beginWaarde(strspWaardeVan);
                Converter.Eenheid naarEenheid = Converter.Eenheid.beginWaarde(strspWaardeNaar);

                /**
                 * Create a converter object and convert!
                 */
                Converter converterToepassen = new Converter(vanEenheid, naarEenheid);
                Double resultaat = converterToepassen.convert(dbetWaardeVan);
                //Display to etWaardeNaar
                etWaardeNaar.setText(String.valueOf(resultaat));
            }
        });
        return view;
    }
}

[Dave Tolls]

Put some logging in there so you can track where in the code it is getting to, and what the values of various things are.
At the moment you are flying blind.