Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android

fatal exemption: main problem when clicking 7 day button

I'm constantly getting Fatal Exception: main

java.lang.NullPointerException: id == null at java.util.TimeZone.getTimeZone at com.example.Day.getDayOfTheWeek(Day.java:66) at com.....DayAdapter.getView(DayAdapter.java:64)

I've compared the codes for DayAdapter and Day. They are all identical. I don't know where to look for to debug