how can make name of the application movable in android?

Question

my Application name is too big ...it got truncate in the end of the toolbar ..how can I make title movable

I will not disclose my app name just take an example

here is the ss: enter image description here

I have only declared the name in strings.xml

<resources>
<string name="app_name">here is my title is too big to display in toolbar</string>
 </resources>