Adding expandableListView to NavigationView
I have a menu defined in xml:
<group android:checkableBehavior="single" android:id="@+id/group">
<item
android:id="@+id/grades"
android:icon="@drawable/ic_font_download_black_48dp"
android:checked="false"
android:title="Grades" >
<menu>
<item
android:id="@+id/mp1"
android:icon="@drawable/ic_looks_one_black_24dp"
android:checked="false"
android:title="MP1" />
<item
android:id="@+id/mp2"
android:icon="@drawable/ic_looks_two_black_24dp"
android:checked="false"
android:title="MP2" />
<item
android:id="@+id/mp3"
android:icon="@drawable/ic_font_download_black_48dp"
android:checked="false"
android:title="MP3" />
<item
android:id="@+id/mp4"
android:icon="@drawable/ic_font_download_black_48dp"
android:checked="false"
android:title="MP4" />
</menu>
</item>
<item
android:id="@+id/schedule"
android:icon="@drawable/ic_event_black_48dp"
android:checked="false"
android:title="Schedule" />
<item
android:id="@+id/attendance"
android:icon="@drawable/ic_assignment_ind_black_48dp"
android:checked="false"
android:title="Attendance" />
<item
android:id="@+id/assignments"
android:icon="@drawable/ic_assignment_black_48dp"
android:checked="false"
android:title="Assignments" />
<item
android:id="@+id/studentInfo"
android:icon="@drawable/ic_account_circle_black_48dp"
android:checked="false"
android:title="Student Details" />
</group>
<group android:id="@+id/group2" android:checkableBehavior="single">
<item
android:id="@+id/placeholder"
android:icon="@drawable/ic_android_black_48dp"
android:checked="false"
android:title="Placeholder" />
<item
android:id="@+id/placeholder2"
android:icon="@drawable/ic_android_black_48dp"
android:checked="false"
android:title="Placeholder" />
</group>
which adds a submenu which looks like this:
However, I am unable to make this submenu look like this: (collapsable)
I now know that I need to implement an expandableListView, but I am not sure how this would fit in with the menu I have already created.
Any advice is appreciated
Solution 1:
You can create it using custom ListView.
See the code below activity_navigation_view.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true">
<ExpandableListView
android:id="@+id/navigationmenu"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="192dp"
android:background="@android:color/white">
</ExpandableListView>
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
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<ExpandedMenuModel> mListDataHeader; // header titles
// child data in format of header title, child title
private HashMap<ExpandedMenuModel, List<String>> mListDataChild;
ExpandableListView expandList;
public ExpandableListAdapter(Context context, List<ExpandedMenuModel> listDataHeader, HashMap<ExpandedMenuModel, List<String>> 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.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/submenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:padding="10dp"
android:textColor="#000000"
android:textSize="18sp"/>
</LinearLayout>
listheader.xml is as follows.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="2dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="20dp"
android:orientation="horizontal">
<ImageView
android:id="@+id/iconimage"
android:layout_width="50dp"
android:layout_height="50dp"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp"/>
<TextView
android:id="@+id/submenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:textColor="#000000"
android:textSize="20sp"/>
</LinearLayout>
</LinearLayout>
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<ExpandedMenuModel> listDataHeader;
HashMap<ExpandedMenuModel, List<String>> 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<ExpandedMenuModel>();
listDataChild = new HashMap<ExpandedMenuModel, List<String>>();
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<String> heading1 = new ArrayList<String>();
heading1.add("Submenu of item 1");
List<String> heading2 = new ArrayList<String>();
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:
Solution 2:
MainActivity.java
import android.graphics.Color;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ExpandableListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
View view_Group;
private DrawerLayout mDrawerLayout;
ExpandableListAdapter mMenuAdapter;
ExpandableListView expandableList;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
//Icons, use as you want
static int[] icon = { R.drawable.ico1, R.drawable.ico1,
R.drawable.ico1, R.drawable.ico1,
R.drawable.ico1, R.drawable.ico1, R.drawable.ico1};
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
expandableList.setIndicatorBounds(expandableList.getRight()- 80, expandableList.getWidth());
} else {
expandableList.setIndicatorBoundsRelative(expandableList.getRight()- 80, expandableList.getWidth());
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
supportRequestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
//requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
expandableList = (ExpandableListView) findViewById(R.id.navigationmenu);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
navigationView.setItemIconTintList(null);
if (navigationView != null) {
setupDrawerContent(navigationView);
}
prepareListData();
mMenuAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expandableList.setAdapter(mMenuAdapter);
expandableList.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView expandableListView,
View view,
int groupPosition,
int childPosition, long id) {
//Log.d("DEBUG", "submenu item clicked");
Toast.makeText(MainActivity.this,
"Header: "+String.valueOf(groupPosition) +
"\nItem: "+ String.valueOf(childPosition), Toast.LENGTH_SHORT)
.show();
view.setSelected(true);
if (view_Group != null) {
view_Group.setBackgroundColor(Color.parseColor("#ffffff"));
}
view_Group = view;
view_Group.setBackgroundColor(Color.parseColor("#DDDDDD"));
mDrawerLayout.closeDrawers();
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<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding data header
listDataHeader.add("menu1");
listDataHeader.add("menu2");
listDataHeader.add("menu3");
listDataHeader.add("menu4");
listDataHeader.add("menu5");
listDataHeader.add("menu6");
listDataHeader.add("menu7");
// Adding child data
List<String> heading1 = new ArrayList<String>();
heading1.add("Submenu");
heading1.add("Submenu");
heading1.add("Submenu");
List<String> heading2 = new ArrayList<String>();
heading2.add("Submenu");
heading2.add("Submenu");
heading2.add("Submenu");
heading2.add("Submenu");
List<String> heading3 = new ArrayList<String>();
heading3.add("Submenu");
heading3.add("Submenu");
List<String> heading4 = new ArrayList<String>();
heading4.add("Submenu");
heading4.add("Submenu");
List<String> heading5 = new ArrayList<String>();
heading5.add("Submenu");
heading5.add("Submenu");
heading5.add("Submenu");
List<String> heading6 = new ArrayList<String>();
heading6.add("Submenu");
heading6.add("Submenu");
List<String> heading7 = new ArrayList<String>();
heading4.add("Submenu");
heading4.add("Submenu");
listDataChild.put(listDataHeader.get(0), heading1);// Header, Child data
listDataChild.put(listDataHeader.get(1), heading2);
listDataChild.put(listDataHeader.get(2), heading3);
listDataChild.put(listDataHeader.get(3), heading4);
listDataChild.put(listDataHeader.get(4), heading5);
listDataChild.put(listDataHeader.get(5), heading6);
listDataChild.put(listDataHeader.get(6), heading7);
}
private void setupDrawerContent(NavigationView navigationView) {
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
menuItem.setChecked(true);
mDrawerLayout.closeDrawers();
return true;
}
});
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
/*if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}*/
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
ExpandableListAdapter.java
import android.content.Context;
import android.graphics.Typeface;
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;
/**
* Created by Administrator on 9/1/16.
*/
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context mContext;
private List<String> mListDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> mListDataChild;
ExpandableListView expandList;
public ExpandableListAdapter(Context context,
List<String> listDataHeader,
HashMap<String,
List<String>> 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 i;
}
@Override
public int getChildrenCount(int groupPosition) {
return this.mListDataChild.get(
this.mListDataHeader.get(groupPosition))
.size();
}
@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) {
String headerTitle = (String) 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);
//lblListHeader.setText(headerTitle.getIconName());
headerIcon.setImageResource(MainActivity.icon[groupPosition]);
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
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textColor="#000000"
android:layout_marginLeft="44dp"
android:textSize="14sp"
android:id="@+id/submenu"/>
</LinearLayout>
listheader.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="2dp"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="45dp"
android:layout_height="45dp"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:id="@+id/iconimage"/>
<TextView
android:layout_width="match_parent"
android:layout_height="45dp"
android:padding="10dp"
android:textColor="#000000"
android:textSize="16sp"
android:id="@+id/submenu"
android:gravity="center_vertical" />
</LinearLayout>
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main">
<ExpandableListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/white"
android:layout_marginTop="160dp"
android:choiceMode="singleChoice"
android:id="@+id/navigationmenu">
</ExpandableListView>
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
Hope this will work and some other files are in this example... I think you can solve those matters... It will look like as you are wanted...