Plus Button

    <phelat.widget.PlusButton
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:gravity="center"
        android:textSize="50sp"
        app:font="Your font in assets folder"/>

also you can use this widget in your java class

PlusButton plusButton = (PlusButton) findViewById(R.id.yourPlusButton);
plusButton.setFont("Font name in assets folder");