OK, i can get the childs View with:
el.getChildAt(1);
el.getChildAt(2);
but... what shouild i do to notify these views that they must reload their
content from the adapter?
El viernes, 1 de febrero de 2013 11:38:42 UTC+1, Kostya Vasilyev escribió:
>
> While TreKing's advice to profile is of course excellent...
>
> ...rebuilding the entire {expandable} list view just to update one item is
> more work that necessary.
>
> When performance is important, you can walk the list of visible item
> views, find the one you need to update, and do it right there. You will
> want to use listView.getFirstVisibleItem / getLastVisibleItem / getChild.
>
> Also there is a callback, AbsListView.onScrollListener, which lets you
> know when the list view is scrolling, and perhaps suspend your updates if
> necessary.
>
> -- K
>
> 2013/2/1 saex <[email protected] <javascript:>>
>
>> I have a ExpandableListView with some groups, and each group haves only
>> one child, with a string on it.
>>
>> I have a thread that get's some updated data and *each second* calls a
>> handler that updates the string of one of the childs of the
>> ExpandableListView and then calls this method to refresh the view and show
>> the updated data to the user: ((BaseExpandableListAdapter)
>> mAdapter).notifyDataSetChanged();
>>
>> This is the update handler:
>>
>> infoUpdateHandler = new Handler(){
>> @Override
>> public void handleMessage(Message msg) {
>> super.handleMessage(msg);
>> children[2][0]=getUpdatedInfo();
>> ((BaseExpandableListAdapter)
>> mAdapter).notifyDataSetChanged();
>> }
>> };
>>
>> The problem is that when i'm scrolling the expandable list view, i can
>> see how the scroll is showing low performance, it stops sometimes. I think
>> that it is because this call ((BaseExpandableListAdapter)
>> mAdapter).notifyDataSetChanged(); is updating all the
>> ExpandableListView.
>>
>> *Does not exist a better way to update a expandable list view? Maybe a
>> way to update only the child that you want to update?*
>>
>> Thanks
>>
>> --
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Android Developers" group.
>> To post to this group, send email to
>> [email protected]<javascript:>
>> To unsubscribe from this group, send email to
>> [email protected] <javascript:>
>> For more options, visit this group at
>> http://groups.google.com/group/android-developers?hl=en
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "Android Developers" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to [email protected] <javascript:>.
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
>>
>
>
--
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
---
You received this message because you are subscribed to the Google Groups
"Android Developers" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/groups/opt_out.
