Adding Menu
on your Activity in Android can be a simple three step process:
Step 1:
Create your Menu Resource Files
Step 2:
Create your android activity’s layout resource file. drawerlayout.widget should be your parent
element for your menu resources to be rendered on the app.
Step 3: Create
your Java Class file and activate your menu widget programmatically,
Here is the code:
Step 1: Start
out by creating two menu resource file under menu tab:
First File: menu_main.xml
<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.example.epbr.Second_Activity">
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:title="@string/action_settings"
app:showAsAction="never" />
</menu>
SeSecond File: navigation_menu
<?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:ignore="HardcodedText">
<item
android:id="@+id/nav_account"
android:title="My Account" />
<item
android:id="@+id/nav_custom"
android:title="My Contribution"
/>
<item
android:id="@+id/nav_settings"
android:title="Settings" />
<item
android:id="@+id/nav_logout"
android:title="Logout" />
</menu>
String Resources: Set Open/Close navigation drawer in String Resource File.
Add the following code to string.xml:
<!--to toggle the open close button of the navigation drawer-->
<string name="nav_open">Open</string>
<string name="nav_close">Close</string>
Step 2: Adding menu on your android activity
<?xml version="1.0" encoding="utf-8"?>
<!--the root view must be the DrawerLayout-->
<androidx.drawerlayout.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/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Second_Activity"
tools:ignore="HardcodedText">
<com.google.android.material.navigation.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="@menu/navigation_menu" />
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".YOUR_Activity">
//YOUR LAYOUT ELEMENTS WILL GO HERE
</LinearLayout>
</androidx.drawerlayout.widget.DrawerLayout>
Step 3: Activate the Menu elements on Java Class file.
public class YOUR_Activity extends AppCompatActivity {
public DrawerLayout drawerLayout;
public ActionBarDrawerToggle actionBarDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_activity);
if(savedInstanceState == null) { // If you are using fragments you can call them here
}
// drawer layout instance to toggle the menu icon to open
drawerLayout = findViewById(R.id.my_drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout,
R.string.nav_open, R.string.nav_close);
// pass the Open and Close toggle for the drawer layout listener
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
// to make the Navigation drawer icon always appear on the action bar
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
// drawer when the icon is clicked
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
