Question

I have 3 activities. A, B and C. From A to C and B to C. How can i from Activity C find out which activity was loaded previously and refereed to this Activity.

Answer 1

You could handle this through intent bundles. Basically in Activity A or B you launch Activity C as follows:

Intent launchIntent = new Intent(this, ActivityC.class);
launchIntent.putExtra("originActivity", this.getClass().getName());

In Activity C, you retrieve it like

public class ActivityC extends Activity{
   onCreate(...){
      Intent callingIntent = getIntent();

      String originActivity = callingIntent.getStringExtra("originActivity");

   }
}

Now I passed the activity name as string, you may include it in some more convenient way, using constants or something like that. You can look it up here.