I have two Activities (A and B) and a Fragment F The Fragment F is contained in the Activity B I\'d like to send Strings from Activity A to Fragment F How can do that? Thanks!>
It is Almost same as you would exchange data between activities. you should just use getActivity() in the beginning in order to access in fragments.
check below code:
In Activity A:
Intent intent = new Intent(this,ActivityB.class);
intent.putExtra("data",data); //data is a string variable holding some value.
startActivity(intent);
In fragment F of Activity B
String data = getActivity().getIntent().getStringExtra("data");