Can't access layout from a nested package folder in android

Issue

I have a folder structure like this (android view):

com.sampleproject
--api
--projectname
  --fragments
    --Frag1.java
  --adapters
    --ArrayAdapter1.java
  --MainActivity.java

--res
  --layout
    --fragment_sample.xml
    --main_activity.xml

I can access fragment_sample from MainActivity by simply writing R.layout.fragment_sample but the layout cannot be resolved when I try to access it from ArrayAdapter1 or Frag1

Can anyone explain why that is?

Solution

1:Make sure your ArrayAdapter1 and Frag1 have com.sampleproject.projectname.R; 2:Pass MainActivity.this to ArrayAdapter1 and Frag1.

Answered By - Andy.Zhao