Getchildview Gets Not Called

I have searched similar threads but they didn't help me and they were light different or they still are unanswered, so I'll describe my trouble. I have an ExpandableListView with a

Solution 1:

Solved

In my first level Adapter (An adapter for the first level ExpandableListView) I modified the getChildView Method

...
// Member Fieldprivate ExpandableListView expandable_field_list;
...

@Overridepublic View getChildView(int groupPosition, int childPosition,boolean isLastChild, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stubif ( groupPosition == 1 ) {
        if ( expandable_field_list == null ) {
            expandable_field_list = newCustomExpandableListView(context);

            // Here I initialize the second and third Level
            client_adapter        = newClientAdapter(context, groups, children);
            expandable_field_list.setAdapter(client_adapter);

        } else {
            client_adapter.notifyDataSetChanged();
        }
        convertView = expandable_field_list;
    }


    return convertView;
}

...

And CustomExpandableListView looks like this

publicclassCustomExpandableListViewextendsExpandableListView {

    privatebooleanexpanded=true;

    publicCustomExpandableListView(Context context) {
        super(context);
    }


    @OverridepublicvoidonMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (isExpanded()) {
            // View.MEASURED_SIZE_MASK represents the largest height possible.intexpandSpec= MeasureSpec.makeMeasureSpec(MEASURED_SIZE_MASK,
                MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, expandSpec);

            ViewGroup.LayoutParamsparams= getLayoutParams();
            params.height = getMeasuredHeight();
        } else {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }    


    @OverrideprotectedvoidonDetachedFromWindow() {
        try {
            super.onDetachedFromWindow();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
    }

    publicvoidsetIsExpanded(boolean expanded) {
        this.expanded = expanded;
    }   

    publicbooleanisExpanded() {
        return expanded;
    }    
}

That is its aspect now as desired