Android: Switching between two activities and sharing information between them

Question

This is a basic question but I need some help with it.

I have two activities : actA, actB. While in actA I want to start actB and give it a String, than I want to end actB and return another String to actA (I don't want to go to onCreate() of actA, I would much rather return this value to some method in actA so it can use the String from actB.

Help is appreciated

Answer 1

From A.java:
Intent myintentB=new Intent(A.this, B.class).putExtra("<StringName>", "Value");
    startActivityForResult(myintentB, 3);

    from B.java:

    Intent myintentA=new Intent(B.this, A.class).putExtra("<StringName>", "Value"); 
    finish();
    setResult(3, myintentA);


    In A.java
@Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            // TODO Auto-generated method stub
            super.onActivityResult(requestCode, resultCode, data);
            String result_string=data.getStringExtra("<StringName>");
        }