android fragment에서 dialogfragment로 인자 넘기기

fragment 

Bundle args = new Bundle(); 
args.putString("title", "popup title"); 
DialogFragment dialogFragment = new DialogFragment (); 
dialogFragment.setArguments(args); 
dialogFragment.show(getFragmentManager(), "Dialog Fragment"); 

dialog fragment 

Bundle arg = getArguments(); 
String arg = mArgs.getString("title");