well i´m trying to create a ExpandableListView like Spotify it does... But i don´t have any idea how do disable the LinearLayout to act like a button (Expand the list) I have created a image which should describe what i like. I like to have the possibility to handle a click on the text / image (parent) as a normal interaction. A click on the right button should expand the list like in Spotify...
This is a bit old question, but this answer might help someone.
If you want to expand/collapse group by clicking on specific Button
or some other View
, you have to get that Button in getGroupView
method in your Adapter class. Then, in onClick
method of your Button
you have, either to cast parent
to ExpandableListView
, or to pass List's reference in constructor when you create adapter.
I prefer the first approach. Here's the code, assuming that you have one TextView
and an ImageView
that is the arrow. I've added changing the arrow state too.
@Override
public View getGroupView(final int groupPosition, final boolean isExpanded,
View convertView, final ViewGroup parent) {
String headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.left_drawer_list_group, parent, false);
}
TextView listHeaderText = (TextView) convertView
.findViewById(R.id.left_menu_list_header_text);
ImageView listHeaderArrow = (ImageView) convertView.findViewById(R.id.left_menu_list_header_arrow);
listHeaderText.setText(headerTitle);
//Set the arrow programatically, so we can control it
int imageResourceId = isExpanded ? android.R.drawable.arrow_up_float : android.R.drawable.arrow_down_float;
listHeaderArrow.setImageResource(imageResourceId);
listHeaderArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(isExpanded) ((ExpandableListView) parent).collapseGroup(groupPosition);
else ((ExpandableListView) parent).expandGroup(groupPosition, true);
}
});
return convertView;
}
Additionally, you would like to disable expanding/collapsing in onGroupClick
listener.
@Override
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {
//Do some other stuff, but you shall not expand or collapse
return true;
}
There is another method, but the fairly bad one, and that is that you copy entire Adapter
class inside the class where you create ExpandableListView
and set Adapter
. But do not do that.
Seriously! ;)