Sending data between activities

Sending data between activities

1       Intent intent = new Intent(this, MyActivity.class);
2       intent.putExtra("media_id", "a1b2c3");
3       // ...
4       startActivity(intent);

The OS parcels the underlying Bundle of the intent. 

1.        this    contains the Bundle

1.2     to whom ?  Ans:   MyActivity.class

 OS creates the new activity, 
un-parcels the data, 
 passes the intent to the new activity.