checkbox how to set the background image adaptive

            
Add a checkbox
By setting a different state checkbox selector of the state
But the selector set picture size does not fit requires proper scaling
Relevant information online seems to have not found how to set the background image is automatically scaled to automatically zoom
are imageviewInquired checkbox how to set image scaling resources
Reply:
Who seems to realize this function can not point to close it
Reply:
How close points? Do not understand, I hope you can help.