CODEWITHSUNDEEP
javaandroidnullpointerexceptionexpandablelistview
user2784435
user2784435

Reputation: 329

Hide group with no child - ExpandableListView

I want to hide the whole group from ExpandableListView if it has no child(s). I've tried to use this in the public View getGroupView:

if (getChildrenCount(groupPosition) == 0) {
    convertView.setVisibility(View.INVISIBLE);
    lblListHeader.setVisibility(View.INVISIBLE);
} else {
    convertView.setVisibility(View.VISIBLE);
    lblListHeader.setVisibility(View.VISIBLE);
}

But that is not working I still see the indicator (the text is removed) and a empty space.

Also I've tried this:

if (getChildrenCount(groupPosition) == 0) {
    convertView = layoutInflater.inflate(R.layout.blank_layout, null);
}

That's working but when I try to open another group I get a java.lang.NullPointerException.

Is it possible to hide group(s) from ExpandableListView if it has no child(s)?

Upvotes: 3

Views: 1973

Answers (1)

Manfred Moser
Manfred Moser

Reputation: 29912

You have to implement the datamodel in the adapter so that it allows removal and then once you have it removed you set invoke notifyDataSetChanged() on the adapter.

Upvotes: 1

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