I have a list of elements that is editable: I can add/delete new elements to the list. Furthermore I can duplicate each Element - duplicated elements are appended to the end of the list. Each element is displayed with a corresponding EditText where users can input quantity of the given element. The Problem: After duplicating an Element E1, editing the quantity of E1 also changes quantity of E2.
Every ListItem looks like this: TextView(ElementTitle) / EditText(ElementQuantity) Everything works flawlessly on lists of many elements - until I use my "duplicate" function. I assume that the problem has something to do with the Recyclerview reusing the EditTextListeners. I am assigning these in onCreateViewHolder as described in this answer: https://stackoverflow.com/a/31860393/6551120.
I tried adding notifydatasetchanged() wherever I could imagine any value. In duplicatedSelected() I tried unregistering and clearing adapter and LayoutManager and creating a new Adapter - without any result.
This is the method that duplicates my elements (In ListActivity):
private void duplicateSelected(){
List selectedItemPositions = mAdapter.getSelectedItems();
for (int i = 0; i < selectedItemPositions.size(); i++) {
int j =(int) selectedItemPositions.get(i);
modulElements.add(modulElements.get(j));
}
mAdapter.notifyDataSetChanged();
In MyAdapter:
private class ModulElementEditTextListener implements TextWatcher {
private int position;
public void updatePosition(int position) {
this.position = position;
}
//Other Override Methods cut out for simplicity
@Override
public void afterTextChanged(Editable editable) {
updatePosition(position);
int timesMultiplied;
if(editable.toString().equals("")){
timesMultiplied=Integer.parseInt("0");
}else{
timesMultiplied = Integer.parseInt(editable.toString());
}
modulElements.get(position)
.setMultiplier(newModulElementMultiplier());
modulElements.get(position)
.getMultiplier().setTimesMultiplied(timesMultiplied);
}
}
Expected result when entering quantity for E1: Quantity for E1 changes
Actual result when entering quantity for E1: Quantity for E1 and E2 (And E3, E4,E5... when I duplicate multiple times) changes.
If I save the list of elements to a database and reopen it I can flawlessy edit quantity of E1 and it does NOT change quantity of E2 - as I would expect it to happen in the first case.
Every hint or idea welcome, thank you so much!
