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Android Android Fragments Introducing Fragments My First Fragment

Dan Valderrama
Dan Valderrama
137 Points
Posted by Dan Valderrama
Dan Valderrama
137 Points

Cannot resolve symbol 'Nullable'.

When I add onCreateView() in the fragment, Android Studio adds '@androidx.annotation.Nullable' above the function instead of '@Nullable'. How can this be fixed?

1 Answer

Lauren Moineau
Lauren Moineau
9,483 Points
Lauren Moineau
Lauren Moineau
9,483 Points

Hi Dan. AndroidX is the new version of the support library. But you can still use the "old" one. There seems to be a bug when creating fragments so both annotations are displayed, as you experienced. Here's what you can do:

  • Delete all the @androidx.annotation.Nullable annotations, leaving only the @Nullable one.
  • Do File > Invalidate Caches / Restart

If you create a new fragment in your app, @Nullable will be the only annotation used from now on. Unfortunately, you'd have to do this for all the apps you will create using the "old" support library (until they fix it).

Hope that helps :)