ExpandableListView Group View Expand Default

Question

I have develop ExpandableListView perfectly.

In My ExpandableListView five groups are there. load first time then collapse all five group. it is default.

now my question is load first time expandablelistview at that time 2 groups are expand and other 3 groups are collapse.

so please guide me how to do?

You want to open 2 of the 5 groups when the list is loaded? – Flo May 31 '11 at 07:58 — Flo, May 31 '11 at 07:58

score 116 · Accepted Answer · edited Oct 24 '12 at 10:43

116

Now I got solution and it will work perfectly.. Please use this..

ExpandableListView Exlist;

Exlist.expandGroup(0);
Exlist.expandGroup(1);

edited Oct 24 '12 at 10:43

Mehul Mistri

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answered May 31 '11 at 09:29

Nikhil

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This works great! I wanted my first section to be expanded by default when the app started, so I simply added MyListName.expandGroup(0); into onCreate and it worked perfectly! Thank you! – LargeGlasses Nov 01 '13 at 18:00
how to make all list in expandableListview to expand? – Anuraj R Feb 22 '17 at 07:49
Make sure you set this after `setAdapter`. and you need to set this with index equal time with headers. – Rumit Patel Oct 08 '18 at 12:30
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It doesnt matter where you put this code, before or after `setAdapter`. But you should put that after your set your data for adapter. This makes sens if you sets adapter and then loads your data over a network – Anatolii Shuba Aug 01 '21 at 19:35

score 78 · Answer 2 · edited May 23 '17 at 11:47

78

I built this snippet based off Nikhil's answer. Thought others might find it useful as well. Only works if you are using BaseExpandableListAdapter. elv

ExpandableListView elv = (ExpandableListView) findViewById(R.id.elv_main);
elv.setAdapter(adapter);
for(int i=0; i < adapter.getGroupCount(); i++)
    elv.expandGroup(i);

edited May 23 '17 at 11:47

Community

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answered Jun 24 '12 at 07:59

bhekman

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How can I expand 3 level expandableListView ? – vrunoa Jan 30 '14 at 19:23
thanq yar...helped me – madhu527 Aug 13 '15 at 14:28
This answer is best as the group count might be dynamic – CrazyLearner Sep 04 '16 at 06:54
@CrazyLearner: No, the Op specifically asked for another scenario: 2 groups should be opened, not all – Bondax Nov 09 '16 at 09:51
i try this solution.but in my expandable listview only first and inbetween two groups only expanded not all.how can i resolve it? – S HemaNandhini Jan 02 '18 at 05:15

score 6 · Answer 3 · edited Feb 27 '17 at 16:49

This is a perfect solution, it will increase automatically

ExpandableListView elv = (ExpandableListView) findViewById(R.id.elv_main);
elv.setAdapter(adapter);
for(int i=0; i < adapter.getGroupCount(); i++)
    elv.expandGroup(i);

but this is based on the item positions

ExpandableListView Exlist;
Exlist.expandGroup(0);// first item of listview
Exlist.expandGroup(1);//second item of listview

score 1 · Answer 4 · edited Mar 04 '19 at 06:02

1

Perfect solution for expanding expandable listview

ExpandableListAdapter expandableListAdapter;
ExpandableListView expandableListView;

expandableListView.expandGroup(0);
expandableListView.expandGroup(1);

expandableListAdapter.notifyDataSetChanged();

edited Mar 04 '19 at 06:02

Andreas

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answered Mar 04 '19 at 05:00

Jose

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ExpandableListView Group View Expand Default

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