Problem regarding Fragment Arguments

in my app , when CrimeListFragment calls CrimeActivity it goes on , and then CrimeActivity calls CrimeFragment and there in onCreateView() method i fetches value from the FragmentArguments for mCrime but it does’t returns any value and mCrime reamins null.
and when i tries to get some value from mCrime to set the view to Display a particular crime when clicked , it prompts error.
how may i resolve it please help me , The problem is in the CrimeFragment File in onCreateView() method with mCrime variable.GithuB Link