Clash Royale CLAN TAG#URR8PPP

Listview not updating based on value on Array Adapter

I call the method below to update my listview

ListView list = (ListView) listView.findViewById(R.id.plan_list);
itemsList = sortAndAddSections(getItems_search(name));
ListAdapter adapter = new ListAdapter(getActivity(), itemsList);
list.setAdapter(adapter);


but that code is associated with a value that changes and also this is the other code

private ArrayList<plan_model> getItems_search(String param_cusname)
Cursor data = myDb.get_search_plan(pattern_email, param_name);
int i = 0;
while (data.moveToNext())
String date = data.getString(3);
String remarks = data.getString(4);
items.add(new plan_model(cusname, remarks);

return items;



and this is my sorter

private ArrayList sortAndAddSections(ArrayList<plan_model> itemList)

Collections.sort(itemList);
plan_model sectionCell;

tempList.clear();
tmpHeaderPositions.clear();

String header = "";
int addedRow = 0;
int bgColor = R.color.alt_gray;
for (int i = 0; i < itemList.size(); i++)

String remarks = itemList.get(i).getRemarks();
String date = itemList.get(i).getDate();

if (!(header.equals(itemList.get(i).getDate())))
sectionCell = new plan_model(remarks, date);
sectionCell.setToSectionHeader();
tmpHeaderPositions.add(i + addedRow);
addedRow++;
tempList.add(sectionCell);
header = itemList.get(i).getDate();
bgColor = R.color.alt_gray;

sectionCell = itemList.get(i);
sectionCell.setBgColor(bgColor);
tempList.add(sectionCell);
if (bgColor == R.color.alt_gray) bgColor = R.color.alt_white;
else bgColor = R.color.alt_gray;


tmpHeaderPositions.add(tempList.size());
for (int i = 0; i < tmpHeaderPositions.size() - 1; i++)
sectionCell = tempList.get(tmpHeaderPositions.get(i));
sectionCell.setDate(sectionCell.getDate() + " (" +
(tmpHeaderPositions.get(i + 1) - tmpHeaderPositions.get(i) - 1) + ")");


return tempList;



my question is the value name changes but my listview is not how can I update my listview? because i need to update it based on search parameter

name

notifydatasetchanged

edittext

DatabaseHelper

2 Answers
2

In getItems_search() add this line at the beginning:

getItems_search()

items.clear();


Every time the value of name changes you have to do the following:

itemsList.clear();
itemsList = sortAndAddSections(getItems_search(name));
list.setAdapter(new ListAdapter(getActivity(), itemsList));


itemsList.clear()

sortAndAddSections(getItems_search(name));

sortAndAddSections(getItems_search(name));

If your itemList is being updated properly, you don't need to create another instance of the adapter, just use notifyDataSetChanged():

itemList

notifyDataSetChanged()

private void createList()
ListView list = (ListView) listView.findViewById(R.id.plan_list);
itemsList = sortAndAddSections(getItems_search(name));
adapter = new ListAdapter(getActivity(), itemsList);
list.setAdapter(adapter);


private void updateList()
sortAndAddSections(getItems_search(name)); // Update itemList without re-assign its value, otherwise the adapter will loose reference
adapter.notifyDataSetChanged()



itemList = something

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