Add/delete a value from hashmap onClick of a button

Question

I want to update the listView when user adds a value... I used SimpleAdapter and hashmap But shows only one value when add button is clicked. When I enter a value again and press the add button, ListView does not show it! Please help....

Post some code to identify the problem. – Margarita Litkevych Feb 17 '14 at 13:19 — Margarita Litkevych, Feb 17 '14 at 13:19
Try cid's answer. That would work. – San Feb 17 '14 at 13:27 — San, Feb 17 '14 at 13:27

score 1 · Accepted Answer · answered Feb 17 '14 at 13:24

1

Maybe a missing :

adapter.notifyDataSetChanged();

answered Feb 17 '14 at 13:24

cid

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adapter.notifyDataSetChanged(); is not there.... I'm using list adapter. That function is not there... Only notify() and notifyAll() is shown – saeedar Feb 18 '14 at 14:41
"list adapter", you mean SimpleAdapter? That's because SimpleAdapter is intended to be used only for _static_ data. Try to use another adapter, like ArrayAdapter for example. – cid Feb 18 '14 at 21:35

score 0 · Answer 2 · edited May 23 '17 at 10:31

0

Once you have added or deleted a value from the hashmap associated with your list adapter, call:

adapter.notifyDataSetChanged();

If its still not updating, check this answer.

edited May 23 '17 at 10:31

Community

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answered Feb 17 '14 at 13:22

amalBit

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adapter.notifyDataSetChanged(); is not there.... I'm using list adapter. That function is not there... Only notify() and notifyAll() is shown – saeedar Feb 18 '14 at 14:50

Add/delete a value from hashmap onClick of a button

2 Answers2