EditText content contained in Android ListView not saved

Question

In my project, I have to show the user a ListView, which is contained mainly from EditText.

This is like a questionnaire when it answers a question that it can go to and answer the next question. (and come back)

public class onAdapter extends BaseAdapter {
    List<PointVerification> mObjects;
    Context mContext;
    LayoutInflater mInflater;

    HashMap<Integer, List<ChoixPointVerification>> mChoix;
    HashMap<Integer, ReponsePointVerification> mReponses;
    HashMap<Integer, String> mReponsesActuel;
    Integer mPositionSelectionne;
    Integer mIdIntervention;


    /**
     * Constructeur
     * @param context

     * @param listePointsVerification Liste des points de vérification à afficher.
     * @param listeChoixPointsVerification liste des choix de points de vérification pour chaque point de vérification.
     * @param listeReponsesPointsVerification réponses déjà fournies pour chaque point de vérification
     * @param idIntervention Identifiant de l'intervention
     */
    public onAdapter(
            Context context,

            Integer idIntervention, 
            List<PointVerification> listePointsVerification,
            List<ChoixPointVerification>> listeChoixPointsVerification,
            ReponsePointVerification> listeReponsesPointsVerification) {

        this.mInflater = LayoutInflater.from(context);
        this.mContext = context;
        this.mObjects = listePointsVerification;

        this.mChoix = listeChoixPointsVerification;
        this.mReponses = listeReponsesPointsVerification;
        this.mIdIntervention = idIntervention;


        // préparation des réponses par position
        this.mReponsesActuel = new HashMap<Integer, String>();
    }


    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row;

        final Integer idPointVerification = getItem(position).id;

        if (convertView == null)
        {
            row = mInflater.inflate(R.layout.intervention_reponses_controle_nombre, null);

            EditText edValeur = (EditText) row.findViewById(R.id.edValeur);
            // Ajout de l'évènement lorsque l'on change la valeur
            // evènement d'enregistrement
            edValeur.addTextChangedListener(new TextWatcher() 

                @Override
                public void onTextChanged(CharSequence s, int start, int before, int count) {
                }

                @Override
                public void beforeTextChanged(CharSequence s, int start, int count,
                        int after) {
                }

                @Override
                public void afterTextChanged(Editable s) {
                    // This hashmap is a try workaround to the bug
                    // i register all modifications into this hashmap
                    mReponsesActuel.put(
                            idPointVerification,
                            s.toString());

                    // SAVE PROCEDURE
                    // REMOVED FOR THE EXAMPLE
                    // BUT I UPDATE MY DATABASE
                }
            });
        }
        else
        {
            row = convertView;
        }

        EditText edValeur = (EditText) row.findViewById(R.id.edValeur);

        // update of the text
        // it is the contained in the hashmap
        if (mReponsesActuel.containsKey(idPointVerification)) {
            String valeur = mReponsesActuel.get(idPointVerification);
            edValeur.setText(valeur);
        // otherwhise i will look into the database
        } else if (mReponses != null && mReponses.containsKey(idPointVerification)
                && mReponses.get(idPointVerification).valeur != null) {
            edValeur.setText(mReponses.get(idPointVerification).valeur);
        }
        else
        {
            edValeur.setText("");
        }

        return row;
    }
}

I don’t know why, but the user goes into the ListView, the content is unsaved and shows some special values, such as other EditText. I have not found how to fix this behavior, and it is really in a hurry.

Basically, I created a TextWatcher that registers data in a database, as well as a temporary HashMap that contains all the values. This data is returned when GetView is called. If I remove this initialization, the EditText will be deleted.

. , .

Edit

: http://dl.free.fr/rbqOhUfJF

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Answer 1

(Android iOS...), . . . , / . - . , hashmap.

.

" " , , , . hashmap - .

, getItem(position).id getItemId(position), .

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TextWatcher , .

setOnFocusChangeListener . , , .

public final class PointVerificationAdapter extends BaseAdapter {
    List<BasicNameValuePair> mObjects;
    Context mContext;
    LayoutInflater mInflater;
    HashMap<Integer, String> mReponsesActuel;
    ArrayList<String> myItems = new ArrayList<String>();

    public PointVerificationAdapter(
            Context context,
            List<BasicNameValuePair> listObjets
            ) {

        this.mInflater = LayoutInflater.from(context);
        this.mContext = context;
        this.mObjects = listObjets;

        for (int i = 0; i < 30; i++) {
            myItems.add(Integer.toString(i));
        }
    }

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

    @Override
    public BasicNameValuePair getItem(int position) {
        return mObjects.get(position);
    }

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

    static class ViewHolder {
        EditText yourEditText;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder = null;

        if (convertView == null)
        {
            holder = new ViewHolder();
            convertView = mInflater.inflate(R.layout.intervention_reponses_controle_nombre, parent, false);
            convertView.setId(position);
            holder.yourEditText = (EditText) convertView.findViewById(R.id.edValeur);

            convertView.setTag(holder);
        }
        else
        {
            holder = (ViewHolder) convertView.getTag();
        }

        ((TextView) convertView.findViewById(R.id.tvNom)).setText(Integer.toString(position));

        holder.yourEditText.setText(myItems.get(position));
        holder.yourEditText.setId(position);
        holder.yourEditText.setOnFocusChangeListener(new OnFocusChangeListener() {
            public void onFocusChange(View view, boolean hasFocus) {
                if (!hasFocus){
                    final int position = view.getId();
                    final EditText editText = (EditText) view;
                    myItems.set(position, editText.getText().toString());
                }
            }
        });

        return convertView;
    }

}

, , addTextChangedListener, onFocusChange.

, :

public final class PointVerificationAdapter extends BaseAdapter {
    List<BasicNameValuePair> mObjects;
    Context mContext;
    LayoutInflater mInflater;
    HashMap<Integer, String> mReponsesActuel;
    ArrayList<String> myItems = new ArrayList<String>();

    public PointVerificationAdapter(
            Context context,
            List<BasicNameValuePair> listObjets
            ) {

        this.mInflater = LayoutInflater.from(context);
        this.mContext = context;
        this.mObjects = listObjets;

        for (int i = 0; i < 30; i++) {
            myItems.add(Integer.toString(i));
        }
    }

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

    @Override
    public BasicNameValuePair getItem(int position) {
        return mObjects.get(position);
    }

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

    static class ViewHolder {
        EditText yourEditText;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        ViewHolder holder = null;

        if (convertView == null)
        {
            holder = new ViewHolder();
            convertView = mInflater.inflate(R.layout.intervention_reponses_controle_nombre, parent, false);
            convertView.setId(position);
            holder.yourEditText = (EditText) convertView.findViewById(R.id.edValeur);
            holder.yourEditText.setId(position);
            holder.yourEditText.addTextChangedListener(new GenericTextWatcher(holder.yourEditText));
            convertView.setTag(holder);
        }
        else
        {
            holder = (ViewHolder) convertView.getTag();
            holder.yourEditText.setId(position);
        }

        ((TextView) convertView.findViewById(R.id.tvNom)).setText(Integer.toString(position));

        holder.yourEditText.setText(myItems.get(position));

        return convertView;
    }

    private class GenericTextWatcher implements TextWatcher{

        private View view;
        private GenericTextWatcher(View view) {
            this.view = view;
        }

        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

        public void afterTextChanged(Editable editable) {
            final int position = view.getId();
            final EditText editText = (EditText) view;
            myItems.set(position, editText.getText().toString());
        }
    }
}