Cause for NullPointerException android.support.v7.widget.RecyclerView.onMeasure

Question

I am getting following Exception

01-27 11:15:15.756  18348-18348/com.example.pnimje.newswipelistview E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.Nu         


        

Answer 1

Antón response is good but can be confusing in beginners like me, talves this serves to clarify some doubts.

RecyclerView rv;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_buscar);

    rv = (RecyclerView) findViewById(R.id.RecViewTest);
    LinearLayoutManager llm = new LinearLayoutManager(this);
    rv.setLayoutManager(llm);


}