Refreshing an ExpandableListView from within the adapter on Android

Question

I'm having trouble on how to refresh an ExpandableListView from within one of its childViews.

The listView contains a list of files, and I want to offer a possibility to delete those files. But after a deletion is performed, the ExpandableListView needs to be refreshed. I implemented my own adapter which extends the BaseExpandableListAdapter. It seems there is no way to get my parent object from within the overwritten getChildView() method to send a notifyDataSetChanged(). :-s

I thought about sending an intent to my activity which contains information on the state of the groups (collapsed/expanded) and to refresh on receive, but even for this I would need the ExpandableListView object.

How can this be done?

Thanks in advance!

Be well
S.

score 7 · Accepted Answer · answered Jul 09 '11 at 19:46

7

You have to

remove the corresponding item from your adapter
and then call adapter.notifyDataSetChanged()

Then the ListView will reload the data.

answered Jul 09 '11 at 19:46

thaussma

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46

Thanks. But doing this is my basic problem. :) I need to refresh *from within* the adapter. – Dennis Winter Jul 09 '11 at 19:52
it just by design doesn't work the way I tried to do it. thanks for your help. – Dennis Winter Oct 11 '11 at 12:15

Refreshing an ExpandableListView from within the adapter on Android

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