Navigation Drawer Menu Item Title Color in Android

Just add app:itemTextColor="@color/accent property in your Navigation view tag like below.

<com.google.android.material.navigation.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:backgroundTint="@color/primary"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer"
    app:itemTextColor="@color/accent"/>

You can also define new style in styles.xml:

<style name="NavigationView">
    <item name="android:textColorSecondary">@color/white</item>
</style>

and then applying this style in NavigationView's theme:

<android.support.design.widget.NavigationView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:theme="@style/NavigationView" />

To give Menu item title color and textSize Create this way..

add this to your styles.xml file.

 <style name="TextAppearance44">
        <item name="android:textColor">#FF0000</item>
        <item name="android:textSize">20sp</item>
 </style>

now in activity_main_drawer.xml file give id attribute to title..

<item android:title="Tools"
       android:id="@+id/tools">
        <menu>
            <item
                android:id="@+id/nav_settings"
                android:icon="@mipmap/settings"
                android:title="Settings" />
            <item
                android:id="@+id/nav_help"
                android:icon="@mipmap/information"
                android:title="Help" />
            <item
                android:id="@+id/nav_about"
                android:icon="@mipmap/team"
                android:title="About Us" />
        </menu>
    </item>

now In MainActivity.java file use this way..

 NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);

        Menu menu = navigationView.getMenu();

        MenuItem tools= menu.findItem(R.id.tools);
        SpannableString s = new SpannableString(tools.getTitle());
        s.setSpan(new TextAppearanceSpan(this, R.style.TextAppearance44), 0, s.length(), 0);
        tools.setTitle(s);
        navigationView.setNavigationItemSelectedListener(this);

It will change your tools color to Red and TextSize to 20sp.. Implement it..

In my case Output :