Question

I have a a listview with each row having a text field and edittext field. I have them all fight on screen. When I resume the activity by either getting a call, going back etc the input in the edittext fields does not match up with what was originally enter into. I was wondering how I could setup onresume or a saved instant state to prevent that and insure that the correct input is in the correct edittext field.

This is the code I’m working with.

public class editview extends ListActivity {
    private dbadapter mydbhelper;
    private PopupWindow pw;
    public static int editCount;
    public static ListView listView;
    public ItemAdapter adapter;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mydbhelper = new dbadapter(this);
        mydbhelper.open();


        View footer = getLayoutInflater().inflate(R.layout.footer_layout, null);
        ListView listView = getListView();
        listView.addFooterView(footer);
        showResults();
        }

    //Populate view
    private void showResults (){
        Cursor cursor = mydbhelper.getUserWord();
        startManagingCursor(cursor);
        String[] from = new String[] {dbadapter.KEY_USERWORD};
         int[] to = new int[] {R.id.textType};
         adapter = new ItemAdapter(this, R.layout.edit_row, cursor,
                        from, to);
            adapter.notifyDataSetChanged();
            this.setListAdapter(adapter);
            editCount = adapter.getCount();
            adapter.notifyDataSetChanged();
    }


            //footer button
            public void onClick(View footer){
                    final MediaPlayer editClickSound = MediaPlayer.create(this, R.raw.button50);
                    editClickSound.start();
                    if (ItemAdapter.inputValues.containsValue("")){
                        Toast.makeText(this, "Please fill in all fields", 1000).show();
                          }else{
                          startActivity(new Intent("wanted.pro.madlibs.OUTPUT"));
                                };

                }
...

            }
            @Override
            protected void onResume() {
                super.onResume();
            }

            @Override
            protected void onPause() {

                super.onPause();

            }


        }
//custom cursor adapter
class ItemAdapter extends SimpleCursorAdapter {

    private LayoutInflater mInflater;
    private Cursor cursor;
    static Map<Integer, String> inputValues = new LinkedHashMap<Integer, String>();
    static String oldText;


    public ItemAdapter(Context context, int layout, Cursor cursor, String[] from,
            int[] to) {
        super(context, layout, cursor, from, to);
        this.cursor = cursor;
        mInflater = LayoutInflater.from(context);

    }


    static class ViewHolder implements TextWatcher {
        protected TextView text;
        protected EditText edittext;
        protected int position;

        public void afterTextChanged(Editable editable) {
            Log.e(String.valueOf(position), "Position in array");
            inputValues.put(position, editable.toString());

        }
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
            // TODO Auto-generated method stub

        }

        }

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


        ViewHolder holder;
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.edit_row, null);


             holder = new ViewHolder();
            holder.text = (TextView) convertView.findViewById(R.id.textType);
            holder.edittext = (EditText) convertView.findViewById(R.id.editText);
            holder.edittext.addTextChangedListener(holder);
            holder.position = position;
            convertView.setTag(holder);

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

        }
        cursor.moveToPosition(position);
        int label_index = cursor.getColumnIndex("userword"); 
        String label = cursor.getString(label_index);

        holder.text.setText(label);
        oldText =  inputValues.get(position);
        holder.edittext.setText(oldText == null ? "" : oldText);

        return convertView;

    }
}

Answer 1

First of all, EditTexts in ListViews are a big pain in the butt, just in case you start running into issues. Second, you don’t seem to be saving the inputValue strings at any point. At least you should serialize the values in onSaveInstanceState() and read them back in onCreate(). You shouldn’t be storing them in the adapter either. You should really have a proper “model” (an object with label and input values) backing the adapter. A SimpleCursorAdapter is not very well suited for modifying data in parallel.