Develop Reference

Android - TabLayout & ViewPager > Fragments > OnListFragmentInteractionListener

I'm new to Android and I started building a "Navigation Drawer Activity" project. I added a TabLayout and ViewPager to my activity_main.xml and now I can swipe between different lists. When I click an item in a list, it calls onListFragmentInteraction in my MainActivity.java. I tried the code below to dynamically add a Detail fragment when a user clicks an item in the list, but I get this error. My MainActivity class does "implement CustomerFragment.OnListFragmentInteractionListener"
First, is my attempt at showing a detail fragment inside a ViewPager correct? Would the code I am attempting below add a fragment in the current tab?
Secondly, does anyone know why I am getting this error?
Thanks so much!
Error:
java.lang.RuntimeException: com.myproject.android.MainActivity#186e12d
must implement OnFragmentInteractionListener
MainActivity:
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener, TabLayout.OnTabSelectedListener, CustomerFragment.OnListFragmentInteractionListener, GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
private TabLayout tabLayout;
private ViewPager viewPager;
private Pager adapter;
public void onListFragmentInteraction(Customer customer){
FragmentManager fm = getSupportFragmentManager();
CustomerDetailFragment fragment = CustomerDetailFragment.newInstance(customer);
fm.beginTransaction().add(R.id.pager, fragment).commit();
}
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) { }
#Override
public void onTabReselected(TabLayout.Tab tab) { }
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
tabLayout.addTab(tabLayout.newTab().setText("Home"));
tabLayout.addTab(tabLayout.newTab().setText("Customers"));
tabLayout.addTab(tabLayout.newTab().setText("Jobs"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
viewPager = (ViewPager) findViewById(R.id.pager);
adapter = new Pager(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
tabLayout.addOnTabSelectedListener(this);
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.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FirebaseMessaging.getInstance().subscribeToTopic("global");
String token = FirebaseInstanceId.getInstance().getToken();
// Check Google Play Services
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.build();
// test
Date d = new Date();
DbHandler dbHandler = new DbHandler(this, null, null, 1);
Customer customer = new Customer(1, 1, 1, 1, "Test", "Test", "Test", false, d, 1, d, 1);
dbHandler.addCustomer(customer);
}
#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) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
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) {
startActivity(new Intent(this, LoginActivity.class));
} else if (id == R.id.nav_gallery) {
startActivity(new Intent(this, SyncActivity.class));
} 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;
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
}
Customer List Fragment:
public class CustomerFragment extends Fragment {
private OnListFragmentInteractionListener mListener;
public CustomerFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_customer_list, container, false);
SearchView sv = (SearchView) view.findViewById(R.id.searchview);
RecyclerView rv = (RecyclerView) view.findViewById(R.id.recyclerview);
// Adapter
rv.setLayoutManager(new LinearLayoutManager(view.getContext()));
final CustomerAdapter adapter = new CustomerAdapter(getCustomers(), mListener);
rv.setAdapter(adapter);
// Search
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String query) {
//adapter.getFilter().filter(query);
return false;
}
});
return view;
}
private ArrayList<Customer> getCustomers() {
DbHandler dbHandler = new DbHandler(this.getActivity(), null, null, 1);
ArrayList<Customer> customers = dbHandler.getCustomers();
return customers;
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnListFragmentInteractionListener) {
mListener = (OnListFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString() + " must implement OnListFragmentInteractionListener");
}
}
#Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnListFragmentInteractionListener {
void onListFragmentInteraction(Customer customer);
}
}
Customer Adapter:
public class CustomerAdapter extends RecyclerView.Adapter<CustomerAdapter.ViewHolder> {
private final List<Customer> mValues;
private final OnListFragmentInteractionListener mListener;
public CustomerAdapter(List<Customer> items, OnListFragmentInteractionListener listener) {
mValues = items;
mListener = listener;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.fragment_customer, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
Customer customer = mValues.get(position);
holder.mItem = customer;
holder.mIdView.setText(String.valueOf(customer.getId()));
holder.mContentView.setText(customer.getCompanyName());
holder.mView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (null != mListener) {
mListener.onListFragmentInteraction(holder.mItem);
}
}
});
}
#Override
public int getItemCount() {
return mValues.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public final View mView;
public final TextView mIdView;
public final TextView mContentView;
public Customer mItem;
public ViewHolder(View view) {
super(view);
mView = view;
mIdView = (TextView) view.findViewById(R.id.id);
mContentView = (TextView) view.findViewById(R.id.content);
}
#Override
public String toString() {
return super.toString() + " '" + mContentView.getText() + "'";
}
}
}
UPDATE: It looks like I needed to add both onListFragmentInteraction AND onFragmentInteraction. The first is for the CustomerListFragment and the 2nd is for the CustomerDetailFragment.
And to get the CustomerDetailFragment working with the tabs, I followed this and got it working:
https://medium.com/#nilan/separate-back-navigation-for-a-tabbed-view-pager-in-android-459859f607e4#.lrjeexdcp
#Override
public void onListFragmentInteraction(Customer customer){
FragmentManager fm = getSupportFragmentManager();
CustomerDetailFragment fragment = CustomerDetailFragment.newInstance(customer);
fm.beginTransaction().add(R.id.pager, fragment).commit();
}
#Override
public void onFragmentInteraction(Uri uri) {
}

You need to put
public void onListFragmentInteraction(Customer customer){
FragmentManager fm = getSupportFragmentManager();
CustomerDetailFragment fragment = CustomerDetailFragment.newInstance(customer);
fm.beginTransaction().add(R.id.pager, fragment).commit();
}
Inside your MainActivity class instead of outside of it.
If that's not actually how your code is, edit your answer to break up the blocks to accurately represent how your code is built and include your interfance inside the fragment for the listener. You also may need the #Override tag above the onListFragmentInteraction implementation
Edit
As I mentioned above you need to put the #Override tag above the onListFragmentInteraction implementation, look at every other listener implementation you already have.

Update an TextView in NavigationDrawer after input from user in previous activity

There is some information that I want to display in the NavigationDrawer. This information is entered by the user in a previous activity. I use an intent to send the information to the Main Activity for the Drawer.
MainActivity (After user entered details)
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = getIntent();
String info = intent.getStringExtra("info");
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(0);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.nav_item_dashboard);
break;
......
}
I have a specific layout for the navigation drawer and it contains a textview which I want to update with the String test. This is the fragment code and the xml for it.
FragmentDrawer Class
public FragmentDrawer() {
}
public void setDrawerListener(FragmentDrawerListener listener) {
this.drawerListener = listener;
}
public static List<NavDrawerItem> getData() {
List<NavDrawerItem> data = new ArrayList<>();
// preparing navigation drawer items
for (int i = 0; i < titles.length; i++) {
NavDrawerItem navItem = new NavDrawerItem();
navItem.setTitle(titles[i]);
navItem.setIcon(icons.getResourceId(i,-1));
data.add(navItem);
}
return data;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// drawer labels
titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
icons = getResources().obtainTypedArray(R.array.nav_drawer_icons);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflating view layout
View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
TextView userID = (TextView) layout.findViewById(R.id.nav_title_user);
adapter = new NavigationDrawerAdapter(getActivity(), getData());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
drawerListener.onDrawerItemSelected(view, position);
mDrawerLayout.closeDrawer(containerView);
}
#Override
public void onLongClick(View view, int position) {
}
}));
return layout;
}
public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
containerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
super.onDrawerSlide(drawerView, slideOffset);
toolbar.setAlpha(1 - slideOffset / 2);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerLayout.post(new Runnable() {
#Override
public void run() {
mDrawerToggle.syncState();
}
});
}
FramgentDrawer.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white">
<RelativeLayout
android:id="#+id/nav_header_container"
android:layout_width="match_parent"
android:layout_height="140dp"
android:layout_alignParentTop="true"
android:background="#color/colorPrimary">
......
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceInverse"
android:text="#string/welcome_user"
android:id="#+id/nav_title_user"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"/>
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/drawerList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
android:layout_below="#id/nav_header_container" />
I have managed to update the list in the drawer with Icons, Labels and a Header. I have done so by using a RecyclerViewAdapter.
The problem that I am having is that these details were from the resources (strings.xml).
How can I update a textview on a NavigationFragment when it has been created? How can I send a value to the fragment so that it will be used during OnCreateView of the fragment?

I was looking too much into it. The solution was quite simple...Even though it took me 3 hrs to figure this out :/
In the NavigationFragment, I created a method to update a textview with a string. In the MainActivity where I get the information from the intent, I just called the method like this:
drawerFragment.setUserTextView(info);
This is why taking breaks are important... ^^

BaseActivity for Navigation

I'm building a base activity for navigation and want something flexible so the Activity dictates to the Base Activity which layout to inflate.
I have the following
public abstract class BaseActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private int mLayoutRes;
protected void setLayout(int layoutRes) {
mLayoutRes = layoutRes;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(mLayoutRes);
// Layout implements toolbar
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null){
setSupportActionBar(toolbar);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
// The layout implements the nav
if (drawer != null){
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
}
// Other Nav code ommitted as its too verbose
}
Then the Layout is passed from the activity as folows
public class Home extends BaseActivity {
private final String TAG = "Home";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.setLayout(R.layout.activity_home);
super.onCreate(savedInstanceState);
// Other Activity code
}
}
Is there a better way to achieve this?
Maybe setting a base layout with a content frame and inflating into that?
Any suggestions would be appreciated.

You can follow BaseActivity from Google IO application. Just override setContentView and you dont need setLayout
Here is my BaseActivity
package com.vtcmobile.kqviet.activity;
public class BaseActivity extends AppCompatActivity {
private Toolbar toolbar;
private DrawerLayout drawerLayout;
private ActionBarDrawerToggle drawerToggle;
private NavigationView navigationView;
protected Context mContext;
public NavigationView getNavigationView() {
return navigationView;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContext = BaseActivity.this;
}
#Override
public void setContentView(int layoutResID) {
super.setContentView(layoutResID);
initToolbar();
}
private void initToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
private void setUpNav() {
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = new ActionBarDrawerToggle(BaseActivity.this, drawerLayout, R.string.app_name, R.string.app_name);
drawerLayout.setDrawerListener(drawerToggle);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
navigationView = (NavigationView) findViewById(R.id.navigation);
// Setting Navigation View Item Selected Listener to handle the item
// click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Checking if the item is in checked state or not, if not make
// it in checked state
if (menuItem.isChecked())
menuItem.setChecked(false);
else
menuItem.setChecked(true);
// Closing drawer on item click
drawerLayout.closeDrawers();
// Check to see which item was being clicked and perform
// appropriate action
Intent intent;
switch (menuItem.getItemId()) {
case R.id.xxxx:
return true;
}
return false;
}
});
// Setting the actionbarToggle to drawer layout
// calling sync state is necessay or else your hamburger icon wont show
// up
drawerToggle.syncState();
}
#Override
public void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
setUpNav();
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item))
return true;
// 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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

I make some changes in BaseActivity class using inflating layout of baseactivity and reuse, you can use following class for extend only into any one of your activity class.
import android.content.Context;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
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.widget.FrameLayout;
public class BaseActivity extends AppCompatActivity {
public Toolbar toolbar;
public DrawerLayout drawerLayout;
public ActionBarDrawerToggle drawerToggle;
public NavigationView navigationView;
public Context mContext;
public NavigationView getNavigationView() {
return navigationView;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContext = BaseActivity.this;
setContentView(R.layout.base_activity);
}
#Override
public void setContentView(int layoutResID) {
DrawerLayout fullView = (DrawerLayout)getLayoutInflater().inflate(R.layout.base_activity, null);
FrameLayout activityContainer = (FrameLayout) fullView.findViewById(R.id.activity_content);
getLayoutInflater().inflate(layoutResID, activityContainer, true);
super.setContentView(fullView);
initToolbar();
}
private void initToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
private void setUpNav() {
drawerLayout = (DrawerLayout) findViewById(R.id.activity_container);
drawerToggle = new ActionBarDrawerToggle(BaseActivity.this, drawerLayout, R.string.app_name, R.string.app_name);
drawerLayout.setDrawerListener(drawerToggle);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
navigationView = (NavigationView) findViewById(R.id.navigation);
// Setting Navigation View Item Selected Listener to handle the item
// click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
public boolean onNavigationItemSelected(MenuItem menuItem) {
// Checking if the item is in checked state or not, if not make
// it in checked state
if (menuItem.isChecked())
menuItem.setChecked(false);
else
menuItem.setChecked(true);
// Closing drawer on item click
drawerLayout.closeDrawers();
// Check to see which item was being clicked and perform
// appropriate action
Intent intent;
switch (menuItem.getItemId()) {
case R.id.xxxx:
return true;
}
return false;
}
});
// Setting the actionbarToggle to drawer layout
// calling sync state is necessay or else your hamburger icon wont show
// up
drawerToggle.syncState();
}
#Override
public void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
setUpNav();
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (drawerToggle.onOptionsItemSelected(item))
return true;
// 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();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
This is my base_activity.xml,
<android.support.v4.widget.DrawerLayout
android:id="#+id/activity_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
/>
<FrameLayout
android:id="#+id/activity_content"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
/>
</android.support.v4.widget.DrawerLayout>

You can refer to my following code, pay attention to addContentView in my base activity (here I name it NavigationDrawerActivity)
Base activity:
public class NavigationDrawerActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_navigation_drawer);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, mDrawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close);
mDrawerLayout.setDrawerListener(toggle);
toggle.syncState();
}
/**
* called in extending activities instead of setContentView...
*
* #param layoutId The content Layout Id of extending activities
*/
public void addContentView(int layoutId) {
LayoutInflater inflater = (LayoutInflater) this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View contentView = inflater.inflate(layoutId, null, false);
mDrawerLayout.addView(contentView, 0);
}
}
Then in other activities, for example, MainActivity:
public class MainActivity extends NavigationDrawerActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.addContentView(R.layout.activity_main);
}
}
Hope this helps!

you could either override setContentView in your BaseActivity and initialised everything after the super call or move all the DrawerLayout related stuff to a protected method and call it from each children of BaseActivity, after you call setContentView. I think the first should be straightforward an, from what you posted, you can avoid to override onCreate in the BaseActivity

Common Navigation DraweFor All Activity
## BaseActivity.java ##
public class BaseActivity extends FragmentActivity
{
final String[] navDrawMenuItems = {"My Project" , "My Project1", "MyProject2", "MyProject3" ,"MyProject4","MyProject5","MyProject6"};
final int[] navDrawMenuIcons = {R.drawable.vendor,
R.drawable.vendor,
R.drawable.vendor,
R.drawable.vendor,
R.drawable.log_icon,
R.drawable.vendor,
};
public RelativeLayout mRelativeLayout;
public FrameLayout actContent;
public ListView navList;
LinearLayout drawer_List;
TextView text_emp_name;
public MenuDrawerAdapter menuDrawerAdapter;
public ArrayList<Vendor_Wrapper> menuDrawerList = new ArrayList<>();
public DrawerArrowDrawable drawerArrowDrawable;
public ImageView drawer_indicator;
public DrawerLayout drawer_layout;
public float offset;
public boolean flipped;
SharedPreferences _SP;
SharedPreferences.Editor _EDITOR;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
for (int i = 0; i < navDrawMenuItems.length; i++)
{
menuDrawerList.add(new Vendor_Wrapper(""+i,navDrawMenuItems[i], navDrawMenuIcons[0]));
}
}
#Override
public void setContentView(int layoutResID)
{
mRelativeLayout = (RelativeLayout) getLayoutInflater().inflate(R.layout.activity_base, null);
actContent = (FrameLayout) mRelativeLayout.findViewById(R.id.main);
// set the drawer dialog_view as main content view of Activity.
setContentView(mRelativeLayout);
// add dialog_view of BaseActivities inside framelayout.i.e. frame_container
getLayoutInflater().inflate(layoutResID, actContent, true);
drawer_layout = (DrawerLayout) findViewById(R.id.drawer_layout);
// =========================================
final Resources resources = getResources();
drawerArrowDrawable = new DrawerArrowDrawable(resources);
drawer_indicator = (ImageView) findViewById(R.id.drawer_indicator);
drawerArrowDrawable.setStrokeColor(resources.getColor(android.R.color.white));
drawer_indicator.setImageDrawable(drawerArrowDrawable);
// =========================================
text_emp_name=(TextView)findViewById(R.id.text_emp_name) ;
_SP = getSharedPreferences(Constants.pref_name, MODE_PRIVATE);
text_emp_name.setText(_SP.getString("empName",""));
drawer_List=(LinearLayout)findViewById(R.id.drawer_List);
navList = (ListView) findViewById(R.id.drawer_List1);
menuDrawerAdapter = new MenuDrawerAdapter(BaseActivity.this, menuDrawerList);
navList.setAdapter(menuDrawerAdapter);
navList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
Intent intent;
// Toast.makeText(getApplicationContext(),"position "+position,30).show();
Log.i(Constants.TAG,"drawer_position: "+position);
switch (position)
{
case 0:
intent = new Intent(BaseActivity.this, List_of_projects.class);
startActivityForResult(intent,Constants.EXIT);
//
break;
case 1:
intent = new Intent(BaseActivity.this, List_of_projects.class);
startActivityForResult(intent,Constants.EXIT);
// drawer_indicator.performClick();
break;
case 2:
intent = new Intent(BaseActivity.this, List_of_projects.class);
startActivityForResult(intent,Constants.EXIT);
// drawer_indicator.performClick();
break;
case 3:
intent = new Intent(BaseActivity.this, List_of_projects.class);
startActivityForResult(intent,Constants.EXIT);
// drawer_indicator.performClick();
break;
case 4:
intent = new Intent(BaseActivity.this, List_of_projects.class);
intent.putExtra("Type","Complaints");
startActivityForResult(intent,Constants.EXIT);
// drawer_indicator.performClick();
break;
case 5:
intent = new Intent(BaseActivity.this, List_of_projects.class);
intent.putExtra("Type","Suggestions");
startActivityForResult(intent,Constants.EXIT);
break;
case 6:
intent = new Intent(BaseActivity.this, List_of_projects.class);
startActivityForResult(intent,Constants.EXIT);
break;
case 7:
System.out.println("Logout clickedddddd ");
SharedPreferences.Editor editor = getSharedPreferences("my_pref", MODE_PRIVATE).edit();
editor.clear();
editor.commit();
setResult(Constants.EXIT);
finish();
break;
default:
break;
}
}
});
initViewsandSharedPreferencesandSQLiteAdapter();
clickToViews();
}
public void setMenuDrawer(ArrayList<Vendor_Wrapper> menuDrawerList, String email)
{
navList = (ListView) findViewById(R.id.drawer_List1);
menuDrawerAdapter = new MenuDrawerAdapter(BaseActivity.this, menuDrawerList);
navList.setAdapter(menuDrawerAdapter);
}
public void initViewsandSharedPreferencesandSQLiteAdapter()
{
_SP = getSharedPreferences(Constants.TAG, MODE_PRIVATE);
_EDITOR = _SP.edit();
drawer_indicator_LL = (LinearLayout) findViewById(R.id.drawer_indicator_LL);
}
/**
* Take care of popping the fragment back stack or finishing the activity
* as appropriate.
*/
#Override
public void onBackPressed()
{
super.onBackPressed();
if (drawer_layout.isDrawerVisible(Gravity.RIGHT))
{
drawer_layout.closeDrawer(drawer_List);
}
else
{
finish();
}
}
public void clickToViews()
{
drawer_layout.setDrawerListener(new DrawerLayout.SimpleDrawerListener()
{
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
offset = slideOffset;
// Sometimes slideOffset ends up so close to but not quite 1 or 0.
if (slideOffset >= .995)
{
flipped = true;
drawerArrowDrawable.setFlip(flipped);
} else if (slideOffset <= .005)
{
flipped = false;
drawerArrowDrawable.setFlip(flipped);
}
drawerArrowDrawable.setParameter(offset);
}
});
drawer_indicator.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
if (drawer_layout.isDrawerVisible(Gravity.RIGHT))
{
drawer_layout.closeDrawer(drawer_List);
}
else
{
drawer_layout.openDrawer(drawer_List);
}
}
});
drawer_indicator_LL.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (drawer_layout.isDrawerVisible(Gravity.RIGHT)) {
drawer_layout.closeDrawer(drawer_List);
} else {
drawer_layout.openDrawer(drawer_List);
}
}
});
}
public void NavigationPerformClick()
{
drawer_indicator.performClick();
}
private class MenuDrawerAdapter extends BaseAdapter
{
ArrayList<Vendor_Wrapper> menuDrawerList;
Context context;
public MenuDrawerAdapter(Context context, ArrayList<Vendor_Wrapper> menuDrawerList)
{
super();
this.context = context;
this.menuDrawerList = menuDrawerList;
}
#Override
public int getCount()
{
return menuDrawerList.size();
}
#Override
public Object getItem(int position)
{
return position;
}
#Override
public long getItemId(int position)
{
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent)
{
LayoutInflater layoutInflater = LayoutInflater.from(BaseActivity.this);
ViewHolder viewHolder;
if (convertView == null)
{
viewHolder = new ViewHolder();
convertView = layoutInflater.inflate(R.layout.row_menu_drawer, null);
viewHolder.tvTitle = (TextView) convertView.findViewById(R.id.tv_title);
viewHolder.imgIcon = (ImageView) convertView.findViewById(R.id.img_icon);
viewHolder.main_RL = (RelativeLayout)convertView.findViewById(R.id.main_RL);
viewHolder.imgIcon.setVisibility(View.GONE);
convertView.setTag(viewHolder);
}
else
{
viewHolder = (ViewHolder) convertView.getTag();
}
Vendor_Wrapper menuDrawerModel = menuDrawerList.get(position);
//## Setup Data below
String Name = menuDrawerModel.getName();
String id = menuDrawerModel.getId();
viewHolder.tvTitle.setText(menuDrawerModel.getName());
// viewHolder.main_RL.setOnClickListener(new ClickToView(BaseActivity.this,position,id,Name));
viewHolder.imgIcon.setImageResource(menuDrawerModel.getDrawable_icon());
return convertView;
}
public class ViewHolder
{
TextView tvTitle;
ImageView imgIcon;
RelativeLayout main_RL;
}
}
protected class MenuDrawerModel
{
private String title;
private int icon;
public String Icon_url;
public MenuDrawerModel(String title, int icon, String icon_url) {
this.title = title;
this.icon = icon;
Icon_url = icon_url;
}
public MenuDrawerModel(String title, int icon)
{
super();
this.title = title;
this.icon = icon;
}
public MenuDrawerModel() {
super();
}
public String getTitle() {
return title;
}
public void setTitle(String title)
{
this.title = title;
}
public int getIcon() {
return icon;
}
public void setIcon(int icon)
{
this.icon = icon;
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
System.out.println("Logout onActivityResult "+resultCode);
if(resultCode==Constants.EXIT)
{
setResult(Constants.EXIT);
finish();
}
}
}
## MainActivity.java ##
public class MainActivity extends BaseActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
## activity_base.xml ##
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white">
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="#+id/header_view"
layout="#layout/layout_header_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/header_view">
</FrameLayout>
</RelativeLayout>
<LinearLayout
android:id="#+id/drawer_List"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layout_marginTop="50dp"
android:background="#color/white"
android:choiceMode="singleChoice"
android:orientation="vertical"
android:weightSum="10">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
android:background="#drawable/bagroundg"
android:orientation="vertical"
android:visibility="gone"
android:weightSum="5">
</LinearLayout>
<ListView
android:id="#+id/drawer_List1"
android:layout_width="200dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/white"
android:choiceMode="singleChoice" />
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
## activity_main.xml ##
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Hello World!"
android:textSize="30dp" />
</LinearLayout>
</RelativeLayout>
public class Vendor_Wrapper
{
private String id;
public Vendor_Wrapper(String id, String name, int drawable_icon)
{
this.id = id;
Name = name;
this.drawable_icon = drawable_icon;
}
private String Name;
private String contact_no;
private String Email_id;
private String Address;
private String img;
private String PAY_MODE;
private String min;
private String max;
private String imgs;
private int drawable_icon;
public int getDrawable_icon() {
return drawable_icon;
}
public void setDrawable_icon(int drawable_icon) {
this.drawable_icon = drawable_icon;
}
public String getEmail_id() {
return Email_id;
}
public void setEmail_id(String email_id) {
Email_id = email_id;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getContact_no() {
return contact_no;
}
public void setContact_no(String contact_no) {
this.contact_no = contact_no;
}
public String getAddress() {
return Address;
}
public void setAddress(String address) {
Address = address;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
public String getPAY_MODE() {
return PAY_MODE;
}
public void setPAY_MODE(String PAY_MODE) {
this.PAY_MODE = PAY_MODE;
}
public String getMin() {
return min;
}
public void setMin(String min) {
this.min = min;
}
public String getMax() {
return max;
}
public void setMax(String max) {
this.max = max;
}
public String getImgs() {
return imgs;
}
public void setImgs(String imgs) {
this.imgs = imgs;
}
public Vendor_Wrapper(String id, String name, String contact_no, String email_id, String address, String img, String PAY_MODE, String min, String max, String imgs) {
this.id = id;
Name = name;
this.contact_no = contact_no;
Email_id = email_id;
Address = address;
this.img = img;
this.PAY_MODE = PAY_MODE;
this.min = min;
this.max = max;
this.imgs = imgs;
}
}

Here is my example of implementing to BaseActivity, I found I did it differently and it worked for me.
My Base Activity
public abstract class BaseActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
//swap this to a switch statement
if (id == R.id.nav_newgame) {
// Start new game
Log.e("Base","new Game");
} else if (id == R.id.nav_players) {
} else if (id == R.id.nav_history) {
} else if (id == R.id.nav_tools) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_about) {
}
DrawerLayout drawer = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Any activity sharing the same Navigation Drawer
public class MainActivity extends BaseActivity
{
NavigationView navigationView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
Allowing one dynamic Nav Drawer in your base activity saving you the trouble of writing code over and over. Additionally you can override the Base Activity's Nav Drawer and make different results for different situations.

How to Create Multi-Level menus in navigation drawer layout

I want to create Multi-Level Menus in drawer Layout. My Activity.xml:-
<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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
<FrameLayout
android:id="#+id/container_body"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="com.android.ShoppingMazza.activity.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
Here My fragment_navigation_drawer.xml:-
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white">
<android.support.v7.widget.RecyclerView
android:id="#+id/drawerList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp" />
Here My FragmentDrawer.java
public class FragmentDrawer extends Fragment {
private static String TAG = FragmentDrawer.class.getSimpleName();
private RecyclerView recyclerView;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private NavigationDrawerAdapter adapter;
private View containerView;
private static String[] titles = null;
private FragmentDrawerListener drawerListener;
public FragmentDrawer() {
}
public void setDrawerListener(FragmentDrawerListener listener) {
this.drawerListener = listener;
}
public static List<NavDrawerItem> getData() {
List<NavDrawerItem> data = new ArrayList<>();
// preparing navigation drawer items
for (int i = 0; i < titles.length; i++) {
NavDrawerItem navItem = new NavDrawerItem();
navItem.setTitle(titles[i]);
data.add(navItem);
}
return data;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// drawer labels
titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflating view layout
View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
adapter = new NavigationDrawerAdapter(getActivity(), getData());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
drawerListener.onDrawerItemSelected(view, position);
mDrawerLayout.closeDrawer(containerView);
}
#Override
public void onLongClick(View view, int position) {
}
}));
return layout;
}
public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
containerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
super.onDrawerSlide(drawerView, slideOffset);
toolbar.setAlpha(1 - slideOffset / 2);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerLayout.post(new Runnable() {
#Override
public void run() {
mDrawerToggle.syncState();
}
});
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
public interface FragmentDrawerListener {
public void onDrawerItemSelected(View view, int position);
}
}
Here My MainActivity.java:-
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(0);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.title_home);
break;
case 1:
fragment = new FriendsFragment();
title = getString(R.string.title_friends);
break;
case 2:
fragment = new MessagesFragment();
title = getString(R.string.title_messages);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(title);
}
}
}
My Current View of App below:-
but i want multi-level submenus (more than 3) in Home menu.
I am new in android developing help me. Thanks in advance

You can simply use Android TreeView Library.
Reference: https://github.com/bmelnychuk/AndroidTreeView
And if you just need three levels, you can create a threelevel custom expandable listview.
Reference: https://github.com/talhahasanzia/Three-Level-Expandable-Listview

You can use ExpandableListView instead of RecyclerView. Here is a nice tutorial to implement it.
Expandable ListView
And if you really want to use RecyclerView you can look at the following library:
Expandable RecyclerView

Items of Navigation works in Emulator but not on my Device

after some modifications on my app, i can see that it works on abdroid studio emulator, the items in the navigation drawer are there, but when i install the app with apk on my mobile, i cant see the items but i can click on.
MainActivity.java:
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(0);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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 Accueil/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);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new Accueil();
title = getString(R.string.title_accueil);
break;
case 1:
fragment = new NosOffres();
title = getString(R.string.title_nosoffres);
break;
case 2:
fragment = new ContactezNous();
title = getString(R.string.title_contact);
break;
case 3:
fragment = new Actualites();
title = getString(R.string.title_actu);
break;
case 4:
fragment = new MentionsLegales();
title = getString(R.string.title_mentions);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
TextView titlet;
titlet = (TextView) findViewById(R.id.main_toolbar_title);
titlet.setText(title);
titlet.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/GothamBook.ttf"));
}
}
}
NavigationDrawerAdapter.java:
public class NavigationDrawerAdapter extends RecyclerView.Adapter<NavigationDrawerAdapter.MyViewHolder> {
List<NavDrawerItem> data = Collections.emptyList();
private LayoutInflater inflater;
private Context context;
public NavigationDrawerAdapter(Context context, List<NavDrawerItem> data) {
this.context = context;
inflater = LayoutInflater.from(context);
this.data = data;
}
public void delete(int position) {
data.remove(position);
notifyItemRemoved(position);
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.nav_drawer_row, parent, false);
MyViewHolder holder = new MyViewHolder(view);
return holder;
}
#Override
public void onBindViewHolder(MyViewHolder holder, int position) {
NavDrawerItem current = data.get(position);
holder.title.setText(current.getTitle());
}
#Override
public int getItemCount() {
return data.size();
}
class MyViewHolder extends RecyclerView.ViewHolder {
TextView title;
public MyViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.title);
title.setTypeface(Typeface.createFromAsset(context.getAssets(), "fonts/GothamBook.ttf"));
}
}
}
FragmentDrawer.java:
public class FragmentDrawer extends Fragment {
private static String TAG = FragmentDrawer.class.getSimpleName();
private RecyclerView recyclerView;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private NavigationDrawerAdapter adapter;
private View containerView;
private static String[] titles = null;
private FragmentDrawerListener drawerListener;
public FragmentDrawer() {
}
public void setDrawerListener(FragmentDrawerListener listener) {
this.drawerListener = listener;
}
public static List<NavDrawerItem> getData() {
List<NavDrawerItem> data = new ArrayList<>();
// preparing navigation drawer items
for (int i = 0; i < titles.length; i++) {
NavDrawerItem navItem = new NavDrawerItem();
navItem.setTitle(titles[i]);
data.add(navItem);
}
return data;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// drawer labels
titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflating view layout
View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
adapter = new NavigationDrawerAdapter(getActivity(), getData());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
drawerListener.onDrawerItemSelected(view, position);
mDrawerLayout.closeDrawer(containerView);
}
#Override
public void onLongClick(View view, int position) {
}
}));
return layout;
}
public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
containerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
super.onDrawerSlide(drawerView, slideOffset);
toolbar.setAlpha(1 - slideOffset / 2);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerLayout.post(new Runnable() {
#Override
public void run() {
mDrawerToggle.syncState();
}
});
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildAdapterPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
}
public interface FragmentDrawerListener {
public void onDrawerItemSelected(View view, int position);
}
}
But i think the error is in the xml files, because i haven't touched the java class, but only xml layout files before the problem:
nav_drawer_row.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true">
<TextView
android:id="#+id/title"
android:layout_width="fill_parent"
android:layout_height="50px"
android:paddingLeft="30dp"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:textSize="15dp"
android:textColor="#ffffff"
android:gravity="center_vertical"
android:textIsSelectable="false" />
</RelativeLayout>
activity_main.xml:
<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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
<FrameLayout
android:id="#+id/container_body"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="fr.solutis.solutis.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
These 2 xml layour are in res/layout but i didn't do the same in res/layout-normal, but i think it's not a problem.

That was the height, it was so small ! So edit nav_drawer_row.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true">
<TextView
android:id="#+id/title"
android:layout_width="fill_parent"
android:layout_height="150px"
android:paddingLeft="30dp"
android:paddingTop="10dp"
android:paddingBottom="10dp"
android:textSize="15dp"
android:textColor="#ffffff"
android:gravity="center_vertical"
android:textIsSelectable="false" />
</RelativeLayout>