Update ListView on item delete or rename

Question

I have the following code in a tabbed Fragment:

    private SetRowsCustomAdapter adapter;
private ArrayList<SetRows> rowsArray = new ArrayList<SetRows>();

    for (Map.Entry<String, String> current_file:filesInFolder.entrySet()) {
     rowsArray.add(new SetRows(R.drawable.ic_launcher, current_file.getKey().toString(), current_file.getValue().toString()));
        }
         adapter = new SetRowsCustomAdapter(getActivity(), R.layout.customlist, rowsArray);
     dataList = (ListView) mFrame3.findViewById(R.id.lvFiles);
     dataList.setAdapter(adapter);
     }

getActivity().deleteFile(txt + ".trp");
adapter.remove(adapter.getItem(info.position));
adapter.notifyDataSetChanged();
startActivity(new Intent(getActivity(), MainActivity.class).putExtra("tab", 2));

which deletes a row within my ListView and starts a new activity to show the changes. Although I have the adapter.notifyDataSetChanged(), it doesn't display the changes once a row is deleted without the last line on the code above.

Can someone please help me fix that so it shows the changes without starting a new activity.

I removed the last two lines but my ListView does not update unless I go out of the tab and come back to it again. — Si8, Dec 02 '13 at 21:45
are you sure this adapter is the adapter for the list being viewed? — njzk2, Dec 02 '13 at 21:47
I updated the above code with more info. I am pretty sure it is. — Si8, Dec 02 '13 at 21:50
what is funny is that when you reload the page it updates. it means the filesInfolder map is also updated. — njzk2, Dec 02 '13 at 21:56
Any idea how to do it without reloading the Fragment activity? — Si8, Dec 02 '13 at 21:58
from your code, reloading should restore the original state, unless there is something else you are doing. — njzk2, Dec 02 '13 at 21:59
It reloads the activity, so when I press the Back button it goes back to the old activity again. — Si8, Dec 02 '13 at 22:00
what i mean is, if you don't change the content of filesInFolder, there is no reason why reloading the view should display anything else but what is in filesInFolder. — njzk2, Dec 02 '13 at 22:24

score 0 · Accepted Answer · edited May 23 '17 at 12:13

0

Use of custom adapter is better for it, these link will help you for it Remove ListView items in Android How to remove arraylist item and then update listview

I think you require to delete from arraylist then call adapter setNotifyDataChange(), b'cos when you call this function it reload the adapter from arraylist.

edited May 23 '17 at 12:13

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answered Dec 03 '13 at 06:48

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Update ListView on item delete or rename

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