You can create it using custom ListView.
See the code below activity_navigation_view.xml
The adapter for expandable list view is as follows.
ExpandableListAdapter.java
import android.content.Context;
import android.graphics.Typeface;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.HashMap;
import java.util.List;
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context mContext;
private List mListDataHeader; // header titles
// child data in format of header title, child title
private HashMap> mListDataChild;
ExpandableListView expandList;
public ExpandableListAdapter(Context context, List listDataHeader, HashMap> listChildData, ExpandableListView mView) {
this.mContext = context;
this.mListDataHeader = listDataHeader;
this.mListDataChild = listChildData;
this.expandList = mView;
}
@Override
public int getGroupCount() {
int i = mListDataHeader.size();
Log.d("GROUPCOUNT", String.valueOf(i));
return this.mListDataHeader.size();
}
@Override
public int getChildrenCount(int groupPosition) {
int childCount = 0;
if (groupPosition != 2) {
childCount = this.mListDataChild.get(this.mListDataHeader.get(groupPosition))
.size();
}
return childCount;
}
@Override
public Object getGroup(int groupPosition) {
return this.mListDataHeader.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
Log.d("CHILD", mListDataChild.get(this.mListDataHeader.get(groupPosition))
.get(childPosition).toString());
return this.mListDataChild.get(this.mListDataHeader.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) {
ExpandedMenuModel headerTitle = (ExpandedMenuModel) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.listheader, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.submenu);
ImageView headerIcon = (ImageView) convertView.findViewById(R.id.iconimage);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle.getIconName());
headerIcon.setImageResource(headerTitle.getIconImg());
return convertView;
}
@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.mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_submenu, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.submenu);
txtListChild.setText(childText);
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
list_submenu.xml is as follows.
listheader.xml is as follows.
In your navigation view activity, set the adapter for the expandable list view.
NavigationViewActivity.java
public class NavigationViewActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
ExpandableListAdapter mMenuAdapter;
ExpandableListView expandableList;
List listDataHeader;
HashMap> listDataChild;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_navigation_view);
final ActionBar ab = getSupportActionBar();
/* to set the menu icon image*/
ab.setHomeAsUpIndicator(android.R.drawable.ic_menu_add);
ab.setDisplayHomeAsUpEnabled(true);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
expandableList = (ExpandableListView) findViewById(R.id.navigationmenu);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
if (navigationView != null) {
setupDrawerContent(navigationView);
}
prepareListData();
mMenuAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild, expandableList);
// setting list adapter
expandableList.setAdapter(mMenuAdapter);
expandableList.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView expandableListView, View view, int i, int i1, long l) {
//Log.d("DEBUG", "submenu item clicked");
return false;
}
});
expandableList.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView expandableListView, View view, int i, long l) {
//Log.d("DEBUG", "heading clicked");
return false;
}
});
}
private void prepareListData() {
listDataHeader = new ArrayList();
listDataChild = new HashMap>();
ExpandedMenuModel item1 = new ExpandedMenuModel();
item1.setIconName("heading1");
item1.setIconImg(android.R.drawable.ic_delete);
// Adding data header
listDataHeader.add(item1);
ExpandedMenuModel item2 = new ExpandedMenuModel();
item2.setIconName("heading2");
item2.setIconImg(android.R.drawable.ic_delete);
listDataHeader.add(item2);
ExpandedMenuModel item3 = new ExpandedMenuModel();
item3.setIconName("heading3");
item3.setIconImg(android.R.drawable.ic_delete);
listDataHeader.add(item3);
// Adding child data
List heading1 = new ArrayList();
heading1.add("Submenu of item 1");
List heading2 = new ArrayList();
heading2.add("Submenu of item 2");
heading2.add("Submenu of item 2");
heading2.add("Submenu of item 2");
listDataChild.put(listDataHeader.get(0), heading1);// Header, Child data
listDataChild.put(listDataHeader.get(1), heading2);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
private void setupDrawerContent(NavigationView navigationView) {
//revision: this don't works, use setOnChildClickListener() and setOnGroupClickListener() above instead
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
menuItem.setChecked(true);
mDrawerLayout.closeDrawers();
return true;
}
});
}
}
ExpandedMenuModel class contains menu item details as follow.
ExpandedMenuModel.java
public class ExpandedMenuModel {
String iconName = "";
int iconImg = -1; // menu icon resource id
public String getIconName() {
return iconName;
}
public void setIconName(String iconName) {
this.iconName = iconName;
}
public int getIconImg() {
return iconImg;
}
public void setIconImg(int iconImg) {
this.iconImg = iconImg;
}
}
[Side note]:
Don't put import android.widget.ExpandableListAdapter; in NavigationViewActivity.java. This mistake can happen if you resolve import by Alt+Enter before create the file ExpandableListAdapter.java.
Put compile 'com.android.support:design:23.3.0' in app's build.gradle, it's for "NavigationView" and its "import android.support.design.widget.NavigationView;" After that (Might require rebuild first) you can do Alt-Enter to resolve import.
The file hierarchy should look like (3 .java and 3 .xml from above):
The output screenshot:
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