nullpointerexception - Getting null pointer with recycler adapter -

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my app crashing due null pointer recyclerview adapter in fragment code. i'm using adapter generate card view list cannot find out causing null pointer. log has happening when setting adapter r.setadapter(ra) in faucet class.

fragment code

public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {      v = inflater.inflate(r.layout.faucetcards, container, false);     r = (recyclerview) getactivity().findviewbyid(r.id.feedrecyclerview);      ra = new recycleradapter(generatecards());     lm = new linearlayoutmanager(getactivity());     r.setadapter(ra);     r.setlayoutmanager(lm);      return v; }

update:

my error r or setting adapter. that's null pointer occurs though ra not null

the nullpointer @ r.set adapter(ra) occurs because r null.

the reason r being null tried find recyclerview in fragment's parent activity. recyclerview contained in fragment's layout, inflated in oncreateview method , stored in v. should instead is:

r = (recyclerview) v.findviewbyid(r.id.feedrecyclerview);

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