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Handle clicks on menu item in toolbar in android

How to handle clicks from a toolbar with Navigation Component in android?
I have a MaterialToolbar in an activity with a menu in xml, the menu shows up and accepts clicks but no action is executed.
This is how I initialize the navigation component:
binding = DataBindingUtil.setContentView(this, R.layout.activity_home);
navController = Navigation.findNavController(this, R.id.fragment_container);
appBarConfiguration = new AppBarConfiguration.Builder(navController.getGraph())
.setDrawerLayout(binding.activityHome)
.build();
NavigationUI.setupWithNavController(binding.navigationView, navController);
NavigationUI.setupWithNavController(binding.toolBar, navController, appBarConfiguration);
This is my Toolbar menu, it has only one item that will open a DialogFragment:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/dialog_account"
android:icon="#drawable/icon_account"
android:title="#string/dialog_account"
app:showAsAction="always" />
</menu>
Then this is the dialog in the navigation_graph
<dialog
android:id="#+id/dialog_account"
android:name="my.package.name.dialogs.DialogAccount"
android:label="#string/dialog_account"
tools:layout="#layout/dialog_account" />
This is the activity layout, nothing fancy there:
<?xml version="1.0" encoding="utf-8"?>
<layout 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">
<data></data>
<androidx.drawerlayout.widget.DrawerLayout
android:id="#+id/activity_home"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="end">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimaryDark"
app:layout_constraintBottom_toTopOf="#+id/fragment_container"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.appbar.MaterialToolbar
android:id="#+id/tool_bar"
style="#style/toolbar_style"
app:menu="#menu/toolbar" />
</com.google.android.material.appbar.AppBarLayout>
<fragment
android:id="#+id/fragment_container"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="match_parent"
android:layout_height="#dimen/null_dimen"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/app_bar"
app:navGraph="#navigation/nav_graph" />
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigation_view"
style="#style/navigation_view" />
</androidx.drawerlayout.widget.DrawerLayout>
</layout>
The Activity layout has a NavigationView and a MaterialToolbar, the navigation from the NavigationView works fine, but I can't find a way to open my dialog from the Toolbar even though it seems like is taking clicks but doing nothing. I have tried with onCreateOptionsMenu but it does not get triggered, guess the Navigation Component is working but my dialog is not opening on touching of the menu.
What am I missing here, any hand?

To handle on click on Toolbar simply use "setOnMenuItemClickListener" by providing id of the toolbar.
mToolbar= findViewById(R.id.main_tollbar);
mToolbar.inflateMenu(R.menu.game_menu);
mToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch(item.getItemId()){
case R.id.search_menu:
Toast.makeText(MainActivity.this,"Search Successful",Toast.LENGTH_LONG).show();
break;
case R.id.menus_logout:
Toast.makeText(MainActivity.this,"Logout Successful",Toast.LENGTH_LONG).show();
break;
case R.id.acc_settings:
Toast.makeText(MainActivity.this,"Setting Successful",Toast.LENGTH_LONG).show();
break;
case R.id.about_menu:
Toast.makeText(MainActivity.this,"About Successful",Toast.LENGTH_LONG).show();
break;
case R.id.feedback_menu:
Toast.makeText(MainActivity.this,"Feedback Successful",Toast.LENGTH_LONG).show();
break;
}
return true;
}
});

If you are using the Toolbar (without using setSupportActionBar(toolbar);) you have to use:
NavigationUI.setupWithNavController(toolbar,navController,mAppBarConfiguration);
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
NavController navController = Navigation.findNavController(context, R.id.nav_host_fragment);
return NavigationUI.onNavDestinationSelected(item, navController);
}
});
In your case it is enough since the id in the menu matches with the id in the navigation graph.
In general you can also use:
public boolean onMenuItemClick(MenuItem item) {
Navigation.findNavController(view).navigate(R.id.action...);
//....
}
Final note: the method onCreateOptionsMenu is only triggered if your are using an ActionBar.

For Navigation component you can use inflator
val view-inflater.inflate(R.Layout.fragment_main, container, false)
view.textview1.setonClickListener{
Navigation.findNavController(view).navigate(R.id.settings)
}

Navigation Drawer App does not change fragments when clicked

Good Morning, I am a newbie programmer, and I use Navigation Drawer Android Studio Activity to start. Everything is ok when I compile, but when I use the app and click on the different options, nothing happens (I mean that the layout doesn't change and remain on the activity_main.xml). I look for other questions but (I think) no one has had my problem.
MainActivity:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private DrawerLayout drawer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Ma giusto a provare", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
}
#Override
public void onBackPressed() {
DrawerLayout drawer = findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
switch(item.getItemId()) {
case R.id.nav_home:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit();
break;
case R.id.nav_gallery:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit();
break;
}
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
main.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_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
</menu>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/app_bar_main">
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"></FrameLayout>
</android.support.constraint.ConstraintLayout>
activity_main_drawer.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:showIn="navigation_view">
<group android:checkableBehavior="single">
<item
android:id="#+id/nav_home"
android:icon="#drawable/ic_menu_camera"
android:title="#string/menu_home" />
<item
android:id="#+id/nav_gallery"
android:icon="#drawable/ic_menu_gallery"
android:title="#string/menu_Cultura" />
<item
android:id="#+id/nav_slideshow"
android:icon="#drawable/ic_menu_slideshow"
android:title="#string/menu_organizer" />
<item
android:id="#+id/nav_tools"
android:icon="#drawable/ic_menu_manage"
android:title="#string/menu_tools" />
</group>
<item android:title="Communicate">
<menu>
<item
android:id="#+id/nav_share"
android:icon="#drawable/ic_menu_share"
android:title="#string/menu_share" />
<item
android:id="#+id/nav_send"
android:icon="#drawable/ic_menu_send"
android:title="#string/menu_send" />
</menu>
</item>
</menu>
fragment_cultura.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cultura generale!"
tools:layout_editor_absoluteX="171dp"
tools:layout_editor_absoluteY="320dp" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="VVVVai!"
tools:layout_editor_absoluteX="161dp"
tools:layout_editor_absoluteY="403dp" />
</android.support.constraint.ConstraintLayout>
CulturaClass.java
public class CulturaClass extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_cultura,container,false);
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_main"
app:menu="#menu/activity_main_drawer" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="hello" />
</android.support.v4.widget.DrawerLayout>

Instead of R.id.fragment_container provide name for FrameLayout in activity_main.xml and pass that name while replacing fragment i.e.
case R.id.nav_home:
ft.replace(R.id.<name_of_framelayout>, new CulturaClass()).commit();
break;
case R.id.nav_gallery:
ft.replace(R.id.<name_of_framelayout>, new CulturaClass()).commit();
break;
This might work for you

Because you are replacing fragment with same class:
case R.id.nav_home:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit(); //Same Class
break;
case R.id.nav_gallery:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit(); //Same Class
break;

You can do this thing simple and easy way using common function or method and You never do mistake.
You have two option to use this One is using JAVA and second, is KOTLIN
The first Method I write below check this:
If you are using java, use like this method
First, create one function i.e name setFragment and pass the parameter Fragment class and second is a title (a Title is an optional if you use or not)
Declare the globally variable
private Fragment fragment = null;
//create function for replace fragment
private void setFragment(Fragment fragmentName, String title) {
fragment = fragmentName;
if (fragment != null) {
// Insert the fragment by replacing any existing fragment
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.framelayout, fragment, fragment.getTag()).commit();
}
setTitle("Dashboard");
// Close the navigation drawer
drawerLayout.closeDrawers();
}
If you are using KOTLIN:
First, create one function i.e name openFragment and pass the parameter Fragment class and second is a title (a Title is an optional if you use or not)
Declare the globally variable
private var fragment: Fragment? = null
//create function for replace fragment
fun openFragment(fragmentClass: Fragment, titleName: String) {
//pass the current fragment class name which you replace
fragment = fragmentClass
//check first fragment is null or not
if (fragment != null) {
val fragmentManager = supportFragmentManager
fragmentManager.beginTransaction()
.replace(R.id.framelayout, fragment!!, fragment!!.tag).commit()
}
title = titleName // replace the titlename
//check the drawerLayout close or not
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START)
}
}

OnOptionsItemSelected doesn't work on android API 19 (but works on android 24)

I have the following code in my activity class
public class admin_fab_features_grid extends
base_activity_for_admin_home_page implements Parcelable {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activity_context = getApplicationContext();
Intent iIntent= getIntent();
Bundle b = iIntent.getExtras();
// display the admin_fab_features_grid that contain the dashboard list of all the admin options
setContentView(R.layout.admin_fab_features_grid);
Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar_toolbar);
setSupportActionBar(toolbar);
}
The base_activity_for_admin_home_page.java has the following code
public class base_activity_for_admin_home_page extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(Tag, " Into base activity for parent menu");
_context = getApplicationContext();
// display the admin_fab_features_grid that contain the dashboard list of all the admin options
setContentView(R.layout.admin_fab_features_grid);
Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar_toolbar);
setSupportActionBar(toolbar);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_admin_home_page, menu);
Log.d(Tag, "inflate done");
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.actionbar_settings:
return true;
}
}
}
The menu_admin_home_page has the following 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"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MyActivity">
<item android:id="#+id/actionbar_settings"
android:title="#string/actionbar_settings"
android:orderInCategory="100"
app:showAsAction="never" />
<!--
<item android:id="#+id/actionbar_dropoff"
android:title="#string/actionbar_dropoff"
android:orderInCategory="90"
app:showAsAction="never" />
<item android:id="#+id/actionbar_signin"
android:title="#string/actionbar_signin"
android:orderInCategory="85"
app:showAsAction="never" />
-->
<item android:id="#+id/actionbar_logout"
android:title="#string/actionbar_logout"
android:orderInCategory="80"
app:showAsAction="never" />
</menu>
The "Settings" menu is enabled in the Toolbar. I can see ":" in the Toolbar. On a device that has Android API24 I am able to click on it and the OnOptionsItemSelected function is getting called. But the same application on a device that has Android API 19 the OnOptionsItemSelected does not get called. Can someone help?

change onOptionsItemSelected() to this and try
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.actionbar_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}

Since you set the showAsAction attribute to never, then these menu items will never show as action views. Try this:
showAsAction = ifRoom|withText
switch (item.getItemId()) {
case R.id.actionbar_settings:
doyouraction();
return true;
default: return super.onOptionsItemSelected(item);
} }

Solved it after 4 days of pain.
What occurred is that the CoordinatorLayout overlays the GridView on top of the toolbar and that is why the onOptionsItemSelected icons were not getting called. They're being blocked. Toolbar doesn't overlay on-top of the GridView like an actionbar. Its a view itself. To solve this I removed the CoordinatorLayout add an id to the Toolbar and then add android:layout_below="#id/toolbar".
<?xml version="1.0" encoding="utf-8"?>
<!--
// <android.support.design.widget.CoordinatorLayout
-->
<LinearLayout
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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="fab_features.admin_fab_features_grid">
<android.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#id/app_bar_toolbar"
style="#style/Widget_v7_Toolbar_style"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.Toolbar
android:id="#id/app_bar_toolbar"
style="#style/Widget_v7_Toolbar_style"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#id/admin_fab_features_grid"
style="#style/admin_fab_features_grid_gridview"
android:layout_below="#id/app_bar_toolbar"
/>
</LinearLayout>

Android: Toolbar in multiple activities

I am trying to create a toolbar in my activities. However, it doesn't work, there is nothing in the action bar. I tried to make my activities extend from BaseActivity, which has toolbar configuration.
I think that there is problem with
onCreateOptionsMenu(Menu menu)
BaseActivity.java
public abstract class BaseActivity extends AppCompatActivity {
private Toolbar toolbar;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(getLayoutResource());
configureToolbar();
}
protected abstract int getLayoutResource();
private void configureToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
// Menu icons are inflated just as they were with actionbar
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
//Handle an option being selected on the menu
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch(item.getItemId())
{
case R.id.selPg:
SelectionPage();
return true;
case R.id.choosePg:
ChoosingPage();
return true;
case R.id.addPg:
AddingPage();
return true;
default:
return super.onOptionsItemSelected(item);
}
//....//
}
ChildActivity.java
public class form_activity extends BaseActivity {
#Override
public int getLayoutResource() {
return R.layout.add_form;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_form);
initializeUI();
}
.....}
Child.xml
<!-- Load the toolbar here -->
<include
android:id="#+id/toolbar"
layout="#layout/tool_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
main_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/selPg"
android:icon="#android:drawable/ic_menu_help"
android:title="Selecton Page"/>
<item android:id="#+id/choosePg"
android:icon="#android:drawable/ic_menu_directions"
android:title="Choosing Page"/>
<item android:id="#+id/addPg"
android:icon="#android:drawable/ic_menu_add"
android:title="Adding Page"/>
</menu>
tool_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:minHeight="?attr/actionBarSize"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:titleTextColor="#android:color/white"
android:background="?attr/colorPrimary">
</android.support.v7.widget.Toolbar>
styles.xml
<style name="AppCompatTheme" parent="#style/Theme.AppCompat.NoActionBar">
manifest
android:theme="#style/AppCompatTheme">

You set setContentView twice (in BaseActivity and in ChildActivity).

In your manifest do like this:
<activity
android:name=".MainActivity"
android:theme="#style/AppTheme.NoActionBar" />
Override in styles xml file
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
In your Layout XML add the toolbar:
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:background="#color/colorPrimary"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
xmlns:android="http://schemas.android.com/apk/res/android">
Finally in your Main Activity which extends AppCompatActivity inflate the toolbar:
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setTitle("My Activity");
setSupportActionBar(toolbar);

Android Search menu item disappears when pressing back button/collapsing search field

I'm using android SearchView to have a search button in my action bar. I followed this tutorial from Google Developers on YouTube, and added a few tweaks based on my own needs. However, whenever I exit the search field that comes up when clicking the button, the search button disappears!
Here is my onCreateOptionsMenu and onOptionsItemSelected functions
onCreateOptionsMenu:
#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;
}
onOptionsItemSelected:
#Override
public boolean onOptionsItemSelected(final 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();
switch (id) {
case R.id.action_settings:
// TODO: settings activity
break;
case R.id.action_logout:
FirebaseAuth.getInstance().signOut();
break;
case R.id.action_search:
// Initialize everything here, because it produces a NullPointerException if initialized in onCreateOptionsMenu
SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);
SearchManager searchManager = (SearchManager)getSystemService(Context.SEARCH_SERVICE);
ComponentName componentName = new ComponentName(this, SearchableActivity.class);
searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName));
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
return false;
}
});
break;
}
return super.onOptionsItemSelected(item);
}
And here's my menu_main.xml layout file
<menu 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"
tools:context="com.magnus.inline.MainActivity">
<item
android:id="#+id/action_search"
android:icon="#drawable/ic_action_search"
android:title="Search"
app:actionViewClass="android.support.v7.widget.SearchView"
app:showAsAction="ifRoom|collapseActionView"/>
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
<item
android:id="#+id/action_logout"
android:orderInCategory="200"
android:title="#string/action_logout"
app:showAsAction="never" />
And searchable.xml layout file
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="#string/app_name"
android:hint="Search"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</searchable>
Images
EDIT:
I noticed that the only time the search button disappears is when I've pressed the options button while in "search mode"(see the last image in link). I have a feeling that when the options menu is displayed, the "action_search" is somehow converted to a options menu item, instead of an action bar item (?). For anyone asking, whenever I try to call MenuItemCompat.getActionView() of a searchview MenuItem in the onCreateOptionsMenu function, my app just crashes and says that it tries to perform it on a null object reference.
Here's my activity_main.xml layout file
<?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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.magnus.inline.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/main_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/main_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AlertDialog.AppCompat.Light"
android:background="#color/colorPrimaryDark" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

Instead of
app:showAsAction="ifRoom|collapseActionView"
Change to
app:showAsAction="always|collapseActionView