Navigation Drawer in bottomappbar android

Navigation Drawer in bottomappbar android - android

class BottomNavigationDrawerFragment: BottomSheetDialogFragment(),
NavigationView.OnNavigationItemSelectedListener {
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_bottomsheet, container, false)
}
override fun onNavigationItemSelected(item : MenuItem): Boolean {
// Bottom Navigation Drawer menu item clicks
when (item.itemId) {
R.id.nav1 -> context!!.toast("oneeeeee")
R.id.nav2 -> context!!.toast("twoooooo")
R.id.nav3 -> context!!.toast("threeeee")
return true
}
// Add code here to update the UI based on the item selected
// For example, swap
}
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
navigation_view.setNavigationItemSelectedListener(this)
// Add code here to update the UI based on the item selected
// For example, swap
}
}
// This is an extension method for easy Toast call
fun Context.toast(message: CharSequence) {
val toast = Toast.makeText(this, message, Toast.LENGTH_SHORT)
toast.setGravity(Gravity.BOTTOM, 0, 600)
toast.show()
}
What I want to achieve is something given in image. I want to make a navigation drawer in bottom app bar. Above code doesn't work and it tells unresolved reference type setNavigationItemSelectedListener. What is the error in my code?

you should add a drawer icon in your bottomAppbar, then use a bottomsheet for the drawer.
for your drawer you have two choices:
1- go with google standards and add drawer items in menu folder (seems you dont want this)
2- replace a fragment in your bottom sheet, in this way you can customize your fragment and do whatever you like
------------------- replace a fragment in your bottom sheet -------------
your activity.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:custom="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="ltr"
android:background="#color/white"
android:orientation="vertical">
<FrameLayout
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:elevation="6dp"
android:visibility="visible"
app:layout_behavior="#string/bottom_sheet_behavior">
<FrameLayout
android:id="#+id/menu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" />
</FrameLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
your Activity.java
public class Activity extends AppCompatActivity implements
FragmentNavigation.OnFragmentInteractionListener {
private CoordinatorLayout coordinatorLayout;
private View bottomSheet;
private BottomSheetBehavior<View> behavior;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
FrameLayout bottomSheetLayout = (FrameLayout)
findViewById(R.id.menu);
FragmentNavigation fragmentNavigation = new FragmentNavigation();
androidx.fragment.app.FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(bottomSheetLayout.getId(),
fragmentNavigation, "k");
fragmentTransaction.commit();
coordinatorLayout = (CoordinatorLayout)
findViewById(R.id.main_content);
bottomSheet = coordinatorLayout.findViewById(R.id.bottom_sheet);
behavior = BottomSheetBehavior.from(bottomSheet);
}
#Override
public void onFragmentInteraction(Uri uri) {
}
}
your fragment navigation
public class FragmentNavigation extends androidx.fragment.app.Fragment {
private String descriptions;
public FragmentNavigation () {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view = inflater.inflate(R.layout.fragment_navigation, container, false);
return view;
}
}
your fragment_navigation.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:custom="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:orientation="vertical">
<TextView
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:elevation="6dp"
android:visibility="visible"
android:text="here is the navigation menu"
app:layout_behavior="#string/bottom_sheet_behavior"/>
</LinearLayout>

See this code it has a navigationIcon attribute but you can use as a bottom app bar. If you need navigation drawer on this click then you have to customize by our own.
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bottom_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:elevation="5dp"
android:elevation="5dp"
app:fabAttached="true"
app:fabCradleDiameter="0dp"
app:backgroundTint="#color/colorPrimary"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:fabAlignmentMode="center"
app:menu="#menu/bottom_bar_menu"/>
In res>menu>bottom_bar_menu, change showAsAction to always or ifRoom, put an icon for action_settings and remove orderInCategory
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_settings"
android:title="#string/action_settings"
android:showAsAction="always"
android:icon="" />
<item
android:title="#string/search"
android:id="#+id/search"
android:icon="#drawable/ic_search_black_24dp"
android:showAsAction="always" />
<item
android:id="#+id/app_bar_archieve"
android:icon="#drawable/ic_bottom_bar_hamburger" // navigation icon
android:title="#string/action_archieve"
app:showAsAction="ifRoom"/>
</menu>
in java :
BottomAppBar bar = (BottomAppBar) findViewById(R.id.bar);
setSupportActionBar(bar);
bar.setNavigationOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// Handle the navigation click by showing a BottomDrawer etc.
}
});
bar.setOnMenuItemClickListener(new OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
// Handle actions based on the menu item
return true;
}
});
Reference Link : https://material.io/develop/android/components/bottom-app-bar/

bottom_bar.replaceMenu(R.menu.bottomappbar_menu)
bottom_bar.setOnMenuItemClickListener {
when (it.itemId) {
R.id.app_bar_copy -> {
}
R.id.app_bar_fav -> {
}
R.id.app_bar_tra -> {
}
else -> {
}
}
true
}
Just add code in fragment to handle menu item.

Related

Materialio Appbar does not hide when scrolling down

I've followed the material documentation for top app bars and implemented a part of it in my app to be able to hide it, when scrolling down my list.
My Layout:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="#+id/ddd"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".pkgTestforend.DriverListFragment">
<com.example.dochjavatestimplementation.pkgTestforend.CustomLinearLayout
android:layout_width="match_parent"
android:id="#+id/cusLL"
android:layout_height="match_parent"
app:elevation="0dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/listAllDrivers"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
</com.example.dochjavatestimplementation.pkgTestforend.CustomLinearLayout>
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:liftOnScroll="true" >
<com.google.android.material.appbar.MaterialToolbar
android:id="#+id/topAppBar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:title="PageTitle"
app:menu="#menu/top_app_bar"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:navigationIcon="#drawable/baseline_menu_24"
style="#style/Widget.MaterialComponents.Toolbar.Primary"
/>
</com.google.android.material.appbar.AppBarLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
And the corresponding fragment:
public class DriverListFragment extends Fragment implements View.OnClickListener {
public DriverListFragment() {
}
public static DriverListFragment newInstance(String param1, String param2) {
return new DriverListFragment();
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_driver_list, container, false);
setUpToolbar(view);
return view;
}
private void setUpToolbar(View view) {
Toolbar toolbar = view.findViewById(R.id.topAppBar);
AppCompatActivity activity = (AppCompatActivity) getActivity();
if (activity != null) {
activity.setSupportActionBar(toolbar);
}
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
menuInflater.inflate(R.menu.top_app_bar, menu);
super.onCreateOptionsMenu(menu, menuInflater);
}
ListView listViewDriver;
DriverListAdapter adapter;
RoomWithRxJavaViewModel viewModel;
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
listViewDriver = view.findViewById(R.id.listAllDrivers);
viewModel = new RoomWithRxJavaViewModel(getActivity().getApplication());
Disposable d = viewModel.getDrivers()
.subscribe(allusers ->
{
adapter = new DriverListAdapter(getContext(), (ArrayList<Driver>) allusers);
listViewDriver.setAdapter(adapter);
}, e -> {
//show err mes
}
);
}
}
The setup is pretty simple build.
I just have a custom linearlayout which I am planning to modify later. And yes, the relative layout for the listview is on purpose so I can easily modify my future button positions.
The result looks like this:
So the issue is that, altough the app bar at the top is visible, it wont hide when I scroll down my list (see picture above), eventough I am using app:liftOnScroll="true" and app:layout_scrollFlags="scroll|enterAlways|snap".
What am I missing exactly? Is it cause I use my custom linearlayout?
Putting the appbar before the custom linearlayout didn't change the output unfourntatly.

Bottom Navigation - Make one of the items open a BottomSheet

I just want to have my "More" menu point open a BottomSheet:
I'm using the new Android navigation component with a navigation graph, but I can't figure out where I could override the behavior.
My menu.xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/navigation_home_screen"
android:icon="#drawable/ic_add_white_24dp"
android:title="#string/title_home" />
<item
android:id="#+id/navigation_sas"
android:icon="#drawable/ic_check_white_24dp"
android:title="#string/title_activity_sa" />
<item
android:id="#+id/navigation_profile"
android:icon="#drawable/ic_close_white_24dp"
android:title="#string/title_profile" />
<item
android:id="#+id/navigation_more_menu"
android:icon="#drawable/ic_more_horiz_24"
android:title="#string/title_more_menu" />
</menu>
My nav-graph:
<?xml version="1.0" encoding="utf-8"?>
<navigation 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/mobile_navigation"
app:startDestination="#id/navigation_home_screen">
<fragment
android:id="#+id/navigation_home_screen"
android:name="com.dev.solidmind.ui.HomeScreenFragment"
android:label="#string/title_home"
tools:layout="#layout/fragment_home_screen" />
<fragment
android:id="#+id/navigation_sas"
android:name="com.dev.solidmind.ui.SA_Fragment"
android:label="#string/title_activity_sa"
tools:layout="#layout/fragment_sa" />
<fragment
android:id="#+id/navigation_profile"
android:name="com.dev.solidmind.ui.ProfileFragment"
android:label="#string/title_profile"
tools:layout="#layout/fragment_profile" />
<dialog
android:id="#+id/navigation_more_menu"
android:label="#string/title_more_menu" />
</navigation>
As you can see I tried adding the more menu BottomSheet as a dialog or some other item, but nothing works.
I added everything in the set-up methods for the navigation component and thought I could override the behavior in the addOnDestinationChangedListener, but it throws an error because it tries to navigate to that menu point:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
BottomNavigationView bottomNavView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_home_screen, R.id.navigation_sas, R.id.navigation_profile, R.id.navigation_more_menu)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
NavigationUI.setupWithNavController(bottomNavView, navController);
navController.addOnDestinationChangedListener((controller, destination, arguments) -> {
if (destination.getId() == R.id.navigation_home_screen) {
Objects.requireNonNull(getSupportActionBar()).hide();
} else if (destination.getId() == R.id.navigation_more_menu) {
openBottomSheet();
} else {
Objects.requireNonNull(getSupportActionBar()).show();
}
});
}
openBottomSheet method:
public void openBottomSheet() {
View dialogView = getLayoutInflater().inflate(R.layout.main_bottom_sheet_menu, findViewById(R.id.main_root_layout), false);
BottomSheetDialog dialog = new BottomSheetDialog(this);
if (paidContentUnlocked)
adaptBottomSheetToPaidStatus(dialogView);
dialog.setContentView(dialogView);
dialog.show();
}
Can I prevent the navigation and only open my menu instead?
Without having to go back to manually managing Fragments with transactions etc...

I've been able to do by simply surrounding my <fragment> tag with a CoordinatorLayout just like below
activity_main.xml
<LinearLayout
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:orientation="vertical">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<fragment
android:id="#+id/nav_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:defaultNavHost="true"
app:navGraph="#navigation/nav_graph"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottom_nav_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:menu="#menu/bottom_navigation_menu"
app:labelVisibilityMode="labeled"
/>
</LinearLayout>
MyBottomSheet
class BottomSheetFragment: BottomSheetDialogFragment(), View.OnClickListener {
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog = BottomSheetDialog(requireContext(), theme)
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_bottom_sheet, container, false)
}
}
OR the Answer of #Naveen Rao
findViewById(R.id.nav_bottom_view).setOnNavigationItemSelectedListener {
// This is to avoid going to startDestination of opening of the BottomSheet
navController.navigate(it.itemId)
true
}

Two different menus for Top App Bar and Bottom App bar with Navigation Components

I was trying out Android Navigation Architecture Component and was also looking into Material design guidelines. I really got inspired by the design below:
For the top toolbar I can set it by setSupportActionBar(toolbar) and then in MainActivity:
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
But while trying it out I cannot figure it out how to implement menus on both Top and Bottom app bars for different fragments, specially for bottom app bar.
For example, I want to show a favorite icon on bottom app bar only on DetailFragment, but on MainActivity, it should be gone.
My current codes:
MainActivity
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
NavController navController = Navigation.findNavController(this, R.id.nav_host);
NavigationUI.setupActionBarWithNavController(this, navController);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(view -> Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show());
}
#Override
public boolean onSupportNavigateUp() {
return Navigation.findNavController(this, R.id.nav_host).navigateUp();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return super.onCreateOptionsMenu(menu);
}
}
MainFragment
public class MainFragment extends Fragment {
public MainFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_main, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
Button buttonOne = view.findViewById(R.id.button_one);
buttonOne.setOnClickListener(Navigation.createNavigateOnClickListener(R.id.detailFragment));
}
}
DetailFragment
public class DetailFragment extends Fragment {
public DetailFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_detail, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:theme="#style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<fragment
android:id="#+id/nav_host"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:layout_marginTop="?android:attr/actionBarSize"
app:defaultNavHost="true"
app:layout_anchor="#id/bottom_appbar"
app:layout_anchorGravity="top"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:navGraph="#navigation/mobile_navigation" />
<com.google.android.material.bottomappbar.BottomAppBar
android:id="#+id/bottom_appbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:layout_gravity="bottom" />
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchor="#id/bottom_appbar" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
mobile_navigation.xml
<navigation 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/mobile_navigation"
app:startDestination="#id/mainFragment">
<fragment
android:id="#+id/mainFragment"
android:name="com.example.MainFragment"
android:label="fragment_main"
tools:layout="#layout/fragment_main" >
<action
android:id="#+id/toAccountFragment"
app:destination="#id/detailFragment" />
</fragment>
<fragment
android:id="#+id/detailFragment"
android:name="com.example.DetailFragment"
android:label="fragment_account"
tools:layout="#layout/fragment_detail" />
</navigation>
menu.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/app_bar_settings"
android:title="#string/action_settings"
app:showAsAction="never" />
</menu>
bottom_appbar_menu.xml for DetialFragment only
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_bottom_fav"
android:icon="#drawable/ic_favorite"
android:title="#string/action_favorite"
app:showAsAction="ifRoom" />
</menu>
Any help is appreciated.
Updated with possible solution:
This is what I'm able to come up with but is not satisfied as I don't know if it's the write way to do it. I'm posting a possible solution:
1- MainActivity
NavController navController = Navigation.findNavController(this, R.id.nav_host);
NavigationUI.setupWithNavController(toolbar, navController);
2- Creating two different menus for bottom app bar (I didn't tried adding menu items dynamically), one with a blank menu xml for MainFragment and another one that contains a favorite icon for DetailFragment.
For simplicity, overriding onCreateOptionsMenu in MainActivity rather than overriding it with the MainFragment:
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
bottomAppBar.replaceMenu(R.menu.bottom_menu_blank);
return super.onCreateOptionsMenu(menu);
}
3- Thanks to #ʍѳђઽ૯ท for letting me know about replaceMenu method of Bottom App Bar. In DetailFragment use setHasOptionsMenu(true) and override onCreateOptionsMenu:
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
BottomAppBar bottomAppBar = requireActivity().findViewById(R.id.bottom_appbar);
bottomAppBar.replaceMenu(R.menu.bottom_menu_fav);
}
If anyone has a better way then please do let know.

Just use onCreateOptionsMenu() for the Toolbar as usual: (Kotlin)
override fun onCreateOptionsMenu(menu: Menu?): Boolean {
menuInflater.inflate(R.menu.menu_first, menu)
return super.onCreateOptionsMenu(menu)
}
Then declare the Toolbar inside onCreate() and use setSupportActionBar():
val toolbar = findViewById<Toolbar>(R.id.myToolbar)
setSupportActionBar(toolbar)
And after that, replaceMenu() will do the trick: (Inside onCreate())
val bottomBar = findViewById<BottomAppBar>(R.id.bottomAppBar)
bottomBar.replaceMenu(R.menu.menu_main)
Note that if you wanted to use BottomSheetFragment for the NavigationView opening, you'll need setSupportActionBar in order to set menus for the BottomAppBar and I couldn't still find a way to fix this.

To have more than one Toolbar (or BottomAppBar), you will have to inflate the other one manually. When you call setSupportActionBar() and onCreateOptionsMenu(), you are essentially doing this:
private boolean inflateBottomAppBar() {
BottomAppBar bottomAppBar = findViewById(R.id.bottomAppBar);
Menu bottomMenu = bottomAppBar.getMenu();
getMenuInflater().inflate(R.menu.menu_bottom, bottomMenu);
for (int i = 0; i < bottomMenu.size(); i++) {
bottomMenu.getItem(i).setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem menuItem) {
return onOptionsItemSelected(menuItem);
}
});
}
return super.onCreateOptionsMenu(menu);
}
Where R.id.bottomAppBar is the id of the BottomAppBar and R.menu.menu_bottom is the id of the menu items.
Call this method in your onCreateOptionsMenu() after you inflate the main toolbar and you will be good to go. All the item clicks will be handled normally by the onOptionsItemSelected() method.
This will also work if you are making two or more regular toolbars.

ActionBar and Toolbar in a fragment

I am struggling to get my fragment child views to take ActionBar/Toolbar into account when displaying.
I have followed a sample from here which has very nicely partitioned the layout into activity layout and fragments with include tags for AppBar/Toolbar and, in my case, floating action button (fab). I have refactored my already working code from having the AppBar/Toolbar and fab on the activity layout with just the fragment being in a separate layout. But the approach of including the AppBar/Toolbar and fab on the fragment gives me the ability to have a clean activity which can accomodate any fragment, with or without AppBar/Toolbar or fab (or any other UI elements). Below is my basic layout setup. The problem I am straggling with is that my RecyclerView is obscured on the the by the Appbar/Toolbar.
activity_main.axml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_coordinator_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- Actual content of the screen -->
<FrameLayout
android:id="#+id/main_content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true" />
</android.support.design.widget.CoordinatorLayout>
fragment_list.axml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/list_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<include
layout="#layout/include_toolbar_actionbar" />
<MvvmCross.Droid.Support.V4.MvxSwipeRefreshLayout
android:id="#+id/listsRefresher"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:MvxBind="Refreshing IsLoading; RefreshCommand ReloadCommand">
<MvvmCross.Droid.Support.V7.RecyclerView.MvxRecyclerView
android:id="#+id/listsRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:MvxItemTemplate="#layout/item_list"
app:MvxBind="ItemsSource Lists; ItemClick ShowListItemsCommand" />
</MvvmCross.Droid.Support.V4.MvxSwipeRefreshLayout>
<include
layout="#layout/include_floatingactionbutton" />
</FrameLayout>
include_toolbar_actionbar.axml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/main_tool_bar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.ToolBar"
app:layout_scrollFlags="scroll|enterAlways" />
</android.support.design.widget.AppBarLayout>
include_floatingactionbutton.axml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.FloatingActionButton
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_margin="#dimen/margin_medium"
android:src="#drawable/ic_add_white_24dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_anchor="#id/main_content_frame"
app:layout_anchorGravity="bottom|right|end" />
MainActivity.cs
namespace List.Mobile.Droid.Activities
{
[Activity(
Label = "#string/applicationName",
Icon = "#drawable/ic_icon",
Theme = "#style/AppTheme.Default",
LaunchMode = LaunchMode.SingleTop,
ScreenOrientation = ScreenOrientation.Portrait,
Name = "list.droid.mobile.activities.MainActivity")]
public class MainActivity : MvxAppCompatActivity<MainViewModel>
{
...
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_main);
ViewModel.ShowLists();
}
}
}
ListsFragment.cs
namespace List.Mobile.Droid.Views
{
[MvxFragmentPresentation(typeof(MainViewModel), Resource.Id.main_content_frame, true)]
[Register("list.mobile.droid.views.ListsFragment")]
public class ListsFragment : BaseFragment<ListsViewModel>, ActionMode.ICallback
{
...
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
base.OnCreateView(inflater, container, savedInstanceState);
var swipeToRefresh = FragmentView.FindViewById<MvxSwipeRefreshLayout>(Resource.Id.refresher);
if (AppBar != null)
AppBar.OffsetChanged += (sender, args) => swipeToRefresh.Enabled = args.VerticalOffset == 0;
var listsRecyclerView = FragmentView.FindViewById<MvxRecyclerView>(Resource.Id.listsRecyclerView);
...
return FragmentView;
}
}
}
BaseFragment.cs
namespace List.Mobile.Droid.Views
{
public abstract class BaseFragment<T> : MvxFragment<T> where T : MvxViewModel
{
protected abstract int FragmentResourceId { get; }
protected View FragmentView { get; set; }
protected AppBarLayout AppBar { get; set; }
protected FloatingActionButton Fab { get; set; }
protected Toolbar Toolbar { get; set; }
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
var view = base.OnCreateView(inflater, container, savedInstanceState);
FragmentView = this.BindingInflate(FragmentResourceId, null);
AppBar = FragmentView.FindViewById<AppBarLayout>(Resource.Id.main_app_bar);
Fab = FragmentView.FindViewById<FloatingActionButton>(Resource.Id.fab);
Toolbar = FragmentView.FindViewById<Toolbar>(Resource.Id.main_tool_bar);
AppCompatActivity parentActivity = ((AppCompatActivity)Activity);
parentActivity.SetSupportActionBar(Toolbar);
parentActivity.SupportActionBar.SetDisplayHomeAsUpEnabled(false);
parentActivity.SupportActionBar.SetHomeButtonEnabled(false);
return view;
}
}
}

If you combine the layout structure of activity+fragment+include you'll see something like this:
CoordinatorLayout
--FrameLayout -> id=main_content_frame
----FrameLayout -> id=list_frame
------AppBarLayout
--------Toolbar
------SwipeRefresh
--------Recycler
------Fab
That means, you have the toolbar and swipe/recycler in a FrameLayout, and this one on top of the other is exactly the expected behavior.
To fix you should make the AppBar+Swipe+Fab as children of the CoordinatorLayout (which is the layout that properly handles interactions between Toolbar/Fab/Scrolling Content. So change your activity to be just the FrameLayout and re-order the fragment to be:
CoordinatorLayout
--AppBarLayout
----Toolbar
--SwipeRefresh
----RecyclerView
--Fab
and don't forget to add app:layout_behavior="#string/appbar_scrolling_view_behavior" to the SwipeRefreshLayout, that's for the Coordinator to properly position it.

Android new Bottom Navigation bar or BottomNavigationView

Saw the new guideline came out, and used in google photos latest app.
Have no idea how to use the new Bottom Navigation Bar.
See through the new support lib, didn't find any lead.
Can not find any official sample.
How to use the new Bottom bar? Don't want to do any customize.

I think you might looking for this.
Here's a quick snippet to get started:
public class MainActivity extends AppCompatActivity {
private BottomBar mBottomBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Notice how you don't use the setContentView method here! Just
// pass your layout to bottom bar, it will be taken care of.
// Everything will be just like you're used to.
mBottomBar = BottomBar.bind(this, R.layout.activity_main,
savedInstanceState);
mBottomBar.setItems(
new BottomBarTab(R.drawable.ic_recents, "Recents"),
new BottomBarTab(R.drawable.ic_favorites, "Favorites"),
new BottomBarTab(R.drawable.ic_nearby, "Nearby"),
new BottomBarTab(R.drawable.ic_friends, "Friends")
);
mBottomBar.setOnItemSelectedListener(new OnTabSelectedListener() {
#Override
public void onItemSelected(final int position) {
// the user selected a new tab
}
});
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mBottomBar.onSaveInstanceState(outState);
}
}
Here is reference link.
https://github.com/roughike/BottomBar
EDIT New Releases.
The Bottom Navigation View has been in the material design guidelines for some time, but it hasn’t been easy for us to implement it into our apps. Some applications have built their own solutions, whilst others have relied on third-party open-source libraries to get the job done. Now the design support library is seeing the addition of this bottom navigation bar, let’s take a dive into how we can use it!
How to use ?
To begin with we need to update our dependency!
compile ‘com.android.support:design:25.0.0’
Design 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">
<!-- Content Container -->
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
app:itemBackground="#color/colorPrimary"
app:itemIconTint="#color/white"
app:itemTextColor="#color/white"
app:menu="#menu/bottom_navigation_main" />
</RelativeLayout>
Create menu as per your requirement.
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_favorites"
android:enabled="true"
android:icon="#drawable/ic_favorite_white_24dp"
android:title="#string/text_favorites"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_schedules"
android:enabled="true"
android:icon="#drawable/ic_access_time_white_24dp"
android:title="#string/text_schedules"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_music"
android:enabled="true"
android:icon="#drawable/ic_audiotrack_white_24dp"
android:title="#string/text_music"
app:showAsAction="ifRoom" />
</menu>
Handling Enabled / Disabled states. Make selector file.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:state_checked="true"
android:color="#color/colorPrimary" />
<item
android:state_checked="false"
android:color="#color/grey" />
</selector>
Handle click events.
BottomNavigationView bottomNavigationView = (BottomNavigationView)
findViewById(R.id.bottom_navigation);
bottomNavigationView.setOnNavigationItemSelectedListener(
new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.action_favorites:
break;
case R.id.action_schedules:
break;
case R.id.action_music:
break;
}
return false;
}
});
Edit : Using Androidx you just need to add below dependencies.
implementation 'com.google.android.material:material:1.2.0-alpha01'
Layout
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:layout_gravity="bottom"
app:menu="#menu/bottom_navigation_menu"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</FrameLayout>
If you want to read more about it's methods and how it works read this.
Surely it will help you.

You should use BottomNavigationView from v25 Android Support Library.
It represents a standard bottom navigation bar for application.
Here is a post on Medium that has a step by step guide:
https://medium.com/#hitherejoe/exploring-the-android-design-support-library-bottom-navigation-drawer-548de699e8e0#.9vmiekxze

My original answer dealt with the BottomNavigationView, but now there is a BottomAppBar. I added a section at the top for that with an implementation link.
Bottom App Bar
The BottomAppBar supports a Floating Action Button.
Image from here. See the documentation and this tutorial for help setting up the BottomAppBar.
Bottom Navigation View
The following full example shows how to make a Bottom Navigation View similar to the image in the question. See also Bottom Navigation in the documentation.
Add the design support library
Add this line to your app's build.grade file next to the other support library things.
implementation 'com.android.support:design:28.0.0'
Replace the version number with whatever is current.
Create the Activity layout
The only special thing we have added to the layout is the BottomNavigationView. To change the color of the icon and text when it is clicked, you can use a selector instead of specifying the color directly. This is omitted for simplicity here.
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">
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
app:menu="#menu/bottom_nav_menu"
app:itemBackground="#color/colorPrimary"
app:itemIconTint="#android:color/white"
app:itemTextColor="#android:color/white" />
</RelativeLayout>
Notice that we used layout_alignParentBottom to actually put it at the bottom.
Define the menu items
The xml above for Bottom Navigation View referred to bottom_nav_menu. This is what defines each item in our view. We will make it now. All you have to do is add a menu resource just like you would for an Action Bar or Toolbar.
bottom_nav_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_recents"
android:enabled="true"
android:icon="#drawable/ic_action_recents"
android:title="Recents"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_favorites"
android:enabled="true"
android:icon="#drawable/ic_action_favorites"
android:title="Favorites"
app:showAsAction="ifRoom" />
<item
android:id="#+id/action_nearby"
android:enabled="true"
android:icon="#drawable/ic_action_nearby"
android:title="Nearby"
app:showAsAction="ifRoom" />
</menu>
You will need to add the appropriate icons to your project. This is not very difficult if you go to File > New > Image Asset and choose Action Bar and Tab Icons as the Icon Type.
Add an item selected listener
There is nothing special happening here. We just add a listener to the Bottom Navigation Bar in our Activity's onCreate method.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_navigation);
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.action_recents:
Toast.makeText(MainActivity.this, "Recents", Toast.LENGTH_SHORT).show();
break;
case R.id.action_favorites:
Toast.makeText(MainActivity.this, "Favorites", Toast.LENGTH_SHORT).show();
break;
case R.id.action_nearby:
Toast.makeText(MainActivity.this, "Nearby", Toast.LENGTH_SHORT).show();
break;
}
return true;
}
});
}
}
Need more help?
I learned how to do this watching the following YouTube video. The computer voice is a little strange, but the demonstration is very clear.
Android Studio Tutorial - Bottom Navigation View

You can also use Tab Layout with custom tab view to achieve this.
custom_tab.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?attr/selectableItemBackground"
android:gravity="center"
android:orientation="vertical"
android:paddingBottom="10dp"
android:paddingTop="8dp">
<ImageView
android:id="#+id/icon"
android:layout_width="24dp"
android:layout_height="24dp"
android:scaleType="centerInside"
android:src="#drawable/ic_recents_selector" />
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLines="1"
android:textAllCaps="false"
android:textColor="#color/tab_color"
android:textSize="12sp"/>
</LinearLayout>
activity_main.xml
<?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">
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
style="#style/AppTabLayout"
android:layout_width="match_parent"
android:layout_height="56dp"
android:background="?attr/colorPrimary" />
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
private TabLayout mTabLayout;
private int[] mTabsIcons = {
R.drawable.ic_recents_selector,
R.drawable.ic_favorite_selector,
R.drawable.ic_place_selector};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Setup the viewPager
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
MyPagerAdapter pagerAdapter = new MyPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(pagerAdapter);
mTabLayout = (TabLayout) findViewById(R.id.tab_layout);
mTabLayout.setupWithViewPager(viewPager);
for (int i = 0; i < mTabLayout.getTabCount(); i++) {
TabLayout.Tab tab = mTabLayout.getTabAt(i);
tab.setCustomView(pagerAdapter.getTabView(i));
}
mTabLayout.getTabAt(0).getCustomView().setSelected(true);
}
private class MyPagerAdapter extends FragmentPagerAdapter {
public final int PAGE_COUNT = 3;
private final String[] mTabsTitle = {"Recents", "Favorites", "Nearby"};
public MyPagerAdapter(FragmentManager fm) {
super(fm);
}
public View getTabView(int position) {
// Given you have a custom layout in `res/layout/custom_tab.xml` with a TextView and ImageView
View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.custom_tab, null);
TextView title = (TextView) view.findViewById(R.id.title);
title.setText(mTabsTitle[position]);
ImageView icon = (ImageView) view.findViewById(R.id.icon);
icon.setImageResource(mTabsIcons[position]);
return view;
}
#Override
public Fragment getItem(int pos) {
switch (pos) {
case 0:
return PageFragment.newInstance(1);
case 1:
return PageFragment.newInstance(2);
case 2:
return PageFragment.newInstance(3);
}
return null;
}
#Override
public int getCount() {
return PAGE_COUNT;
}
#Override
public CharSequence getPageTitle(int position) {
return mTabsTitle[position];
}
}
}
Download Complete Sample Project

Google has launched the BottomNavigationView after the version 25.0.0 of the design support library. But it came with the following limitations:
You can't remove titles and center icon.
You cant't change titles text size.
Y̶o̶u̶ ̶c̶a̶n̶'̶t̶ ̶c̶h̶a̶n̶g̶e̶ ̶t̶h̶e̶ ̶b̶a̶c̶k̶g̶r̶o̶u̶n̶d̶ ̶c̶o̶l̶o̶r̶ ̶i̶t̶ ̶i̶s̶ ̶a̶l̶w̶a̶y̶s̶ ̶t̶h̶e̶ ̶c̶o̶l̶o̶r̶P̶r̶i̶m̶a̶r̶y̶.̶
It doesn't have a BottomNavigationBehavior: so no integration with FAB or SnackBar through CordinatorLayout.
Every menuItem is a pure extension of FrameLayout so it doesn't have any nice circle reveal effect
So the max you can do with this fist version of BottomNavigationView is: (without any reflection or implementing the lib by yourself).
So, If you want any of these. You can use a third part library like roughike/BottomBar or implement the lib by yourself.

As Sanf0rd mentioned, Google launched the BottomNavigationView as part of the Design Support Library version 25.0.0. The limitations he mentioned are mostly true, except that you CAN change the background color of the view and even the text color and icon tint color. It also has an animation when you add more than 4 items (sadly it cannot be enabled or disabled manually).
I wrote a detailed tutorial about it with examples and an accompanying repository, which you can read here:
https://blog.autsoft.hu/now-you-can-use-the-bottom-navigation-view-in-the-design-support-library/
The gist of it
You have to add these in your app level build.gradle:
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.android.support:design:25.0.0'
You can include it in your layout like this:
<android.support.design.widget.BottomNavigationView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/bottom_navigation_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:itemBackground="#color/darkGrey"
app:itemIconTint="#color/bottom_navigation_item_background_colors"
app:itemTextColor="#color/bottom_navigation_item_background_colors"
app:menu="#menu/menu_bottom_navigation" />
You can specify the items via a menu resource like this:
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/action_one"
android:icon="#android:drawable/ic_dialog_map"
android:title="One"/>
<item
android:id="#+id/action_two"
android:icon="#android:drawable/ic_dialog_info"
android:title="Two"/>
<item
android:id="#+id/action_three"
android:icon="#android:drawable/ic_dialog_email"
android:title="Three"/>
<item
android:id="#+id/action_four"
android:icon="#android:drawable/ic_popup_reminder"
android:title="Four"/>
</menu>
And you can set the tint and text color as a color list, so the currently selected item is highlighted:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:color="#color/colorAccent"
android:state_checked="false"/>
<item
android:color="#android:color/white"
android:state_checked="true"/>
</selector>
Finally, you can handle the selection of the items with an OnNavigationItemSelectedListener:
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.action_one:
// Switch to page one
break;
case R.id.action_two:
// Switch to page two
break;
case R.id.action_three:
// Switch to page three
break;
}
return true;
}
});

Other alternate library you can try :- https://github.com/Ashok-Varma/BottomNavigation
<com.ashokvarma.bottomnavigation.BottomNavigationBar
android:layout_gravity="bottom"
android:id="#+id/bottom_navigation_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
BottomNavigationBar bottomNavigationBar = (BottomNavigationBar) findViewById(R.id.bottom_navigation_bar);
bottomNavigationBar
.addItem(new BottomNavigationItem(R.drawable.ic_home_white_24dp, "Home"))
.addItem(new BottomNavigationItem(R.drawable.ic_book_white_24dp, "Books"))
.addItem(new BottomNavigationItem(R.drawable.ic_music_note_white_24dp, "Music"))
.addItem(new BottomNavigationItem(R.drawable.ic_tv_white_24dp, "Movies & TV"))
.addItem(new BottomNavigationItem(R.drawable.ic_videogame_asset_white_24dp, "Games"))
.initialise();

i've made a private class which uses a gridview and a menu resource:
private class BottomBar {
private GridView mGridView;
private Menu mMenu;
private BottomBarAdapter mBottomBarAdapter;
private View.OnClickListener mOnClickListener;
public BottomBar (#IdRes int gridviewId, #MenuRes int menuRes,View.OnClickListener onClickListener) {
this.mGridView = (GridView) findViewById(gridviewId);
this.mMenu = getMenu(menuRes);
this.mOnClickListener = onClickListener;
this.mBottomBarAdapter = new BottomBarAdapter();
this.mGridView.setAdapter(mBottomBarAdapter);
}
private Menu getMenu(#MenuRes int menuId) {
PopupMenu p = new PopupMenu(MainActivity.this,null);
Menu menu = p.getMenu();
getMenuInflater().inflate(menuId,menu);
return menu;
}
public GridView getGridView(){
return mGridView;
}
public void show() {
mGridView.setVisibility(View.VISIBLE);
mGridView.animate().translationY(0);
}
public void hide() {
mGridView.animate().translationY(mGridView.getHeight());
}
private class BottomBarAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public BottomBarAdapter(){
this.mInflater = LayoutInflater.from(MainActivity.this);
}
#Override
public int getCount() {
return mMenu.size();
}
#Override
public Object getItem(int i) {
return mMenu.getItem(i);
}
#Override
public long getItemId(int i) {
return 0;
}
#Override
public View getView(int i, View view, ViewGroup viewGroup) {
MenuItem item = (MenuItem) getItem(i);
if (view==null){
view = mInflater.inflate(R.layout.your_item_layout,null);
view.setId(item.getItemId());
}
view.setOnClickListener(mOnClickListener);
view.findViewById(R.id.bottomnav_icon).setBackground(item.getIcon());
((TextView) view.findViewById(R.id.bottomnav_label)).setText(item.getTitle());
return view;
}
}
your_menu.xml:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/item1_id"
android:icon="#drawable/ic_item1"
android:title="#string/title_item1"/>
<item android:id="#+id/item2_id"
android:icon="#drawable/ic_item2"
android:title="#string/title_item2"/>
...
</menu>
and a custom layout item your_item_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_margin="16dp">
<ImageButton android:id="#+id/bottomnav_icon"
android:layout_width="24dp"
android:layout_height="24dp"
android:layout_gravity="top|center_horizontal"
android:layout_marginTop="8dp"
android:layout_marginBottom="4dp"/>
<TextView android:id="#+id/bottomnav_label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:layout_marginBottom="8dp"
android:layout_marginTop="4dp"
style="#style/mystyle_label" />
</LinearLayout>
usage inside your mainactivity:
BottomBar bottomBar = new BottomBar(R.id.YourGridView,R.menu.your_menu, mOnClickListener);
and
private View.OnClickListener mOnClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.item1_id:
//todo item1
break;
case R.id.item2_id:
//todo item2
break;
...
}
}
}
and in layout_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
...
<FrameLayout android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<GridView android:id="#+id/bottomNav"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/your_background_color"
android:verticalSpacing="0dp"
android:horizontalSpacing="0dp"
android:numColumns="4"
android:stretchMode="columnWidth"
app:layout_anchor="#id/fragment_container"
app:layout_anchorGravity="bottom"/>
</android.support.design.widget.CoordinatorLayout>

I think this is also be useful.
Snippet
public class MainActivity : AppCompatActivity, BottomNavigationBar.Listeners.IOnTabSelectedListener
{
private BottomBar _bottomBar;
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.MainActivity);
_bottomBar = BottomBar.Attach(this, bundle);
_bottomBar.SetItems(
new BottomBarTab(Resource.Drawable.ic_recents, "Recents"),
new BottomBarTab(Resource.Drawable.ic_favorites, "Favorites"),
new BottomBarTab(Resource.Drawable.ic_nearby, "Nearby")
);
_bottomBar.SetOnItemSelectedListener(this);
_bottomBar.HideShadow();
_bottomBar.UseDarkTheme(true);
_bottomBar.SetTypeFace("Roboto-Regular.ttf");
var badge = _bottomBar.MakeBadgeForTabAt(1, Color.ParseColor("#f02d4c"), 1);
badge.AutoShowAfterUnSelection = true;
}
public void OnItemSelected(int position)
{
}
protected override void OnSaveInstanceState(Bundle outState)
{
base.OnSaveInstanceState(outState);
// Necessary to restore the BottomBar's state, otherwise we would
// lose the current tab on orientation change.
_bottomBar.OnSaveInstanceState(outState);
}
}
Links
https://github.com/pocheshire/BottomNavigationBar
It's https://github.com/roughike/BottomBar ported to C# for Xamarin developers

There is a new official BottomNavigationView in version 25 of the Design Support Library
https://developer.android.com/reference/android/support/design/widget/BottomNavigationView.html
add in gradle
compile 'com.android.support:design:25.0.0'
XML
<android.support.design.widget.BottomNavigationView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:design="http://schema.android.com/apk/res/android.support.design"
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
design:menu="#menu/my_navigation_items" />

This library, BottomNavigationViewEx, extends Google's BottomNavigationView. You can easily customise Google's library to have bottom navigation bar the way you want it to be. You can disable the shifting mode, change visibility of the icons and texts and so much more. Definitely try it out.

I have referred this github post and I have set the three layouts for three fragment pages in bottom tab bar.
FourButtonsActivity.java:
bottomBar.setFragmentItems(getSupportFragmentManager(), R.id.fragmentContainer,
new BottomBarFragment(LibraryFragment.newInstance(R.layout.library_fragment_layout), R.drawable.ic_update_white_24dp, "Recents"),
new BottomBarFragment(PhotoEffectFragment.newInstance(R.layout.photo_effect_fragment), R.drawable.ic_local_dining_white_24dp, "Food"),
new BottomBarFragment(VideoFragment.newInstance(R.layout.video_layout), R.drawable.ic_favorite_white_24dp, "Favorites")
);
To set the badge count :
BottomBarBadge unreadMessages = bottomBar.makeBadgeForTabAt(1, "#E91E63", 4);
unreadMessages.show();
unreadMessages.setCount(4);
unreadMessages.setAnimationDuration(200);
unreadMessages.setAutoShowAfterUnSelection(true);
LibraryFragment.java:
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class LibraryFragment extends Fragment {
private static final String STARTING_TEXT = "Four Buttons Bottom Navigation";
public LibraryFragment() {
}
public static LibraryFragment newInstance(int resource) {
Bundle args = new Bundle();
args.putInt(STARTING_TEXT, resource);
LibraryFragment sampleFragment = new LibraryFragment();
sampleFragment.setArguments(args);
return sampleFragment;
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = LayoutInflater.from(getActivity()).inflate(
getArguments().getInt(STARTING_TEXT), null);
return view;
}

<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="#menu/navigation" />
navigation.xml(inside menu)
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/navigation_home"
android:icon="#drawable/ic_home_black_24dp"
android:title="#string/title_home"
app:showAsAction="always|withText"
android:enabled="true"/>
Inside onCreate() method,
BottomNavigationView navigation = (BottomNavigationView)findViewById(R.id.navigation);
//Dont forgot this line
BottomNavigationViewHelper.disableShiftMode(navigation);
And Create class as below.
public class BottomNavigationViewHelper {
public static void disableShiftMode(BottomNavigationView view) {
BottomNavigationMenuView menuView = (BottomNavigationMenuView) view.getChildAt(0);
try {
Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
shiftingMode.setAccessible(true);
shiftingMode.setBoolean(menuView, false);
shiftingMode.setAccessible(false);
for (int i = 0; i < menuView.getChildCount(); i++) {
BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);
//noinspection RestrictedApi
item.setShiftingMode(false);
// set once again checked value, so view will be updated
//noinspection RestrictedApi
item.setChecked(item.getItemData().isChecked());
}
} catch (NoSuchFieldException e) {
Log.e("BNVHelper", "Unable to get shift mode field", e);
} catch (IllegalAccessException e) {
Log.e("BNVHelper", "Unable to change value of shift mode", e);
}
}
}

You can create the layouts according to the above-mentioned answers
If anyone wants to use this in kotlin:-
private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
when (item.itemId) {
R.id.images -> {
// do your work....
return#OnNavigationItemSelectedListener true
}
R.id.videos ->
{
// do your work....
return#OnNavigationItemSelectedListener true
}
}
false
}
then in oncreate you can set the above listener to your view
mDataBinding?.navigation?.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Navigation Drawer in bottomappbar android - android

bottom_bar.replaceMenu(R.menu.bottomappbar_menu) bottom_bar.setOnMenuItemClickListener { when (it.itemId) { R.id.app_bar_copy -> { } R.id.app_bar_fav -> { } R.id.app_bar_tra -> { } else -> { } } true } Just add code in fragment to handle menu item.

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