Here we will learn how to create custom toolbar and use it in different activity using <include> tag in xml file of the activity.

1) We will design the layout for the toolbar in our project's layout directory, I have named it as mtoolbar.xml.

mtoolbar.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ff9999"
        android:minHeight="?attr/actionBarSize">

        <RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_alignParentRight="true"
        android:id="@+id/refresh"
        android:layout_marginTop="3dp"
        android:layout_width="25dp"
        android:layout_height="27dp"
        android:background="@drawable/refresh"/>
    <ImageView
        android:layout_toLeftOf="@+id/refresh"
        android:id="@+id/search"
        android:layout_marginTop="5dp"
        android:layout_width="25dp"
        android:layout_height="23dp"
        android:background="@drawable/srch"/>


</RelativeLayout>



    </android.support.v7.widget.Toolbar>


</LinearLayout>

2)Now make use of the above toolbar in your activity using <include> tag in your activity xml file.

activity_main.xml

<LinearLayout
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    tools:context=".MainActivity"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    
    <include layout="@layout/mtoolbar"/>
    
    
<android.support.v4.widget.DrawerLayout
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <FrameLayout
        android:id="@+id/main_fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </FrameLayout>

    <ListView
        android:id="@+id/list_slidermenu"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@color/list_devider"
        android:dividerHeight="1dp"
        />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>

3) Finally add the toolbar in your MainActivity.java file as shown below in the code.

MainActivity.java

public class MainActivity extends AppCompatActivity
{
   
     private Toolbar toptoolbar;
    
     @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    
         toptoolbar=(Toolbar)findViewById(R.id.toolbar);

        setSupportActionBar(toptoolbar);


    }
}