when i use it in Notification,it can't be inflated.

I want to use NumProgressBar to show progress in notification, it show an error:
Couldn't inflate contentViewsandroid.view.InflateException: Binary XML file line #37: Binary XML file line #37: Error inflating class com.daimajia.numberprogressbar.NumberProgressBar

Reproduce the notification inflation failure using NumberProgressBar and inspect the notification XML at line 37, along with the NumberProgressBar class named in the error. Done means the notification contentViews inflate successfully and the progress bar can display progress without the reported InflateException.

Written by the indexing model from the issue text.