Android: 2 or more ExpandableListView inside Navigation Drawer

Question

How could I do something like this?

Two expandable listview inside nav

Answer 1

Finally i have got it! This is the code I created to get an ExpandableListView with section titles. Now it's I can easily create three xml custom layouts for titles, groups and childrens.

It work for me, but I accept any code improvements to optimize memory usage, speed and so on.

// ---------------------------------------------------------------------------------------------
// NAVIGATION DRAWER SIDE FRAGMENT
// ---------------------------------------------------------------------------------------------

private ExpandableListView mDrawerListView;
private List<Elemento> mainActions = new ArrayList<>();
private HashMap<Integer, List<String>> childActions = new HashMap<>();

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View v = inflater.inflate(R.layout.frg_navigation_drawer, container, false);

    assert v != null;

    mDrawerListView = (ExpandableListView) v.findViewById(R.id.elvHome);
    mDrawerListView.setGroupIndicator(null);

    // add first title
    mainActions.add(new TitoloGruppo("Good guys"));                     // 0
    mainActions.add(new Azione("Admiral Ackbar", "Dagobah System"));    // 1
    mainActions.add(new Azione("Han Solo", "Millenium Falcon"));        // 2
    mainActions.add(new Azione("Yoda", "Dagobah System"));              // 3
    // add second title
    mainActions.add(new TitoloGruppo("Bad guys"));                      // 4
    mainActions.add(new Azione("Emperor", "Death star 2"));             // 5
    mainActions.add(new Azione("Jabba", "Tatooine"));                   // 6
    mainActions.add(new Azione("Grand Moff Tarkin", "Death star 1"));   // 7

    // Adding child quotes to Ackbar
    List<String> mainSubFive = new ArrayList<>();
    mainSubFive.add("It's a trap!");

    // Adding child quotes to Yoda
    List<String> mainSubThree = new ArrayList<>();
    mainSubThree.add("Do or do not; there is no try.");
    mainSubThree.add("There is … another … Sky … walker.…");
    mainSubThree.add("When 900 years old you reach, look as good you will not ehh.");

    childActions.put(0, new ArrayList<String>());
    childActions.put(1, mainSubFive);
    childActions.put(2, new ArrayList<String>());
    childActions.put(3, mainSubThree);
    childActions.put(4, new ArrayList<String>());
    childActions.put(5, new ArrayList<String>());
    childActions.put(6, new ArrayList<String>());

    mDrawerListView.setAdapter(new ExpandableAdapter(getActivity(), mainActions, childActions));
    mDrawerListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
        @Override
        public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
            List<String> list = childActions.get(groupPosition);
            if(list.size() > 0)
                return false;
            else
                Toast.makeText(getActivity(), ""+ ((Azione) mainActions.get(groupPosition)).getSubtitle(), Toast.LENGTH_LONG).show();
            return false;
        }
    });

    mDrawerListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
            List<String> list = childActions.get(groupPosition);

            Toast.makeText(getActivity(), "" + list.get(childPosition).toString(), Toast.LENGTH_LONG).show();
            return false;
        }
    });
    return v;
}


// ---------------------------------------------------------------------------------------------
// INTERNAL CLASS
// ---------------------------------------------------------------------------------------------

protected class ExpandableAdapter extends BaseExpandableListAdapter {

    private Context context;
    private List<Elemento> mainElements;
    private HashMap<Integer, List<String>> childElements;
    private LayoutInflater vi;

    public ExpandableAdapter(Context context, List<Elemento> mainElements, HashMap<Integer, List<String>> childElements) {
        this.context = context;
        this.mainElements = mainElements;
        this.childElements = childElements;
        vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getGroupCount() {
        return this.mainElements.size();
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        if(this.childElements.get(groupPosition) == null)
            return 0;
        return this.childElements.get(groupPosition).size();
    }

    @Override
    public Object getGroup(int groupPosition) {
        return this.mainElements.get(groupPosition);
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return this.childElements.get(groupPosition).get(childPosition);
    }

    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        View v = convertView;

        final Elemento i = mainElements.get(groupPosition);
        if (i != null) {
            if(i.isGroupSection()){
                final TitoloGruppo si = (TitoloGruppo)i;
                v = vi.inflate(android.R.layout.simple_list_item_1, null);
                v.setOnClickListener(null);
                v.setOnLongClickListener(null);
                v.setLongClickable(false);
                final TextView sectionView = (TextView) v.findViewById(android.R.id.text1);
                sectionView.setTextColor(Color.parseColor("#FFC800"));
                sectionView.setText(si.getTitle());
            }else if(i.isAction()){
                Azione ei = (Azione)i;
                v = vi.inflate(android.R.layout.simple_list_item_2, null);
                final TextView title = (TextView)v.findViewById(android.R.id.text1);
                final TextView subtitle = (TextView)v.findViewById(android.R.id.text2);

                if (title != null)
                    title.setText(ei.title);
                if(subtitle != null)
                    subtitle.setText("count: " + getChildrenCount(groupPosition));
            }
        }
        return v;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

        final String childText = (String) getChild(groupPosition, childPosition);

        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this.context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(android.R.layout.simple_list_item_1, null);
        }

        TextView txtListChild = (TextView) convertView.findViewById(android.R.id.text1);
        txtListChild.setText(childText);
        return convertView;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return true;
    }
}   

    public class TitoloGruppo implements Elemento {

    private final String titolo;

    public TitoloGruppo(String titolo) {
        this.titolo = titolo;
    }

    public String getTitle(){
        return titolo;
    }

    @Override
    public boolean isGroupSection() {
        return true;
    }

    @Override
    public boolean isAction() {
        return false;
    }
}

protected interface Elemento {
    public boolean isGroupSection();
    public boolean isAction();
}

protected class Azione implements Elemento {
    public final String title;
    public final String subtitle;

    public Azione(String title, String subtitle) {
        this.title = title;
        this.subtitle = subtitle;
    }

    public String getTitle() {
        return this.title;
    }

    public String getSubtitle() {
        return this.subtitle;
    }

    @Override
    public boolean isGroupSection() {
        return false;
    }

    @Override
    public boolean isAction() {
        return true;
    }
}

Ps. thank you all

Answer 2

FYI the screen shot you have shown in your qsn also have Pinnned or sectioned listview.

ExpandableListView in navigation drawer:

Use this code DrawerLayoutTest for ExpandableListView in navigation drawer.

Update: Here is exactly what you looking for, give it at try for this michenux navigation-drawer , Git

Logic:

1>use ExpandableListView + michenux navigation-drawer drawer for design and Expandable list view and for that count of "3" items inside use jgilfelt's android-viewbadger lib.

2>You have to play around in getview(..) in the listview for disabling enabling the drop down icon of the expandable listview, it the item has no child (check for array or arraylist is null/empty) and make visible invisible the badger (drop down count icon/badger) thats it or simply change the list view item layout depending on the each item values Ex: for list row contains expandable childs load different layout with view badger !

Credits: Michenaud,Jgilfelt