ExpandableListView - hide indicator for groups with no children

In an ExpandableListView, is there a way to hide the group indicator for groups with no children?

Solution 1:

Try this >>>

for all items

 getExpandableListView().setGroupIndicator(null);

In xml

android:groupIndicator="@null"

Solution 2:

The android:groupIndicator property takes a state enabled drawable. That is, you can set different image for different states.

When the group has no children, the corresponding state is 'state_empty'

See these reference links:

this and this

For state_empty, you can set a different image which is not confusing, or, simply use transparent color to display nothing...

Add this item in your stateful drawable along with others....

<item android:state_empty="true" android:drawable="@android:color/transparent"/>

So, your statelist can be like this:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_empty="true" android:drawable="@android:color/transparent"/>
    <item android:state_expanded="true" android:drawable="@drawable/my_icon_max" />
    <item android:drawable="@drawable/my_icon_min" />
</selector>

In case you are using an ExpandableListActivity, you can set the groupindicator in onCreate as follows:

getExpandableListView().setGroupIndicator(getResources().getDrawable(R.drawable.my_group_statelist));

I have tested this to be working.