How do I instantiate a class in android which is also an activity?

Question

In android, how can I create a constructor for a class which is also an Activity?

My problem is,

I want to have two activity cl

Answer 1

In android, how can I create a constructor for a class which is also an Activity?

You don't.

I want to have two activity classes (estimateFare and Mapping) which both send data to a an activity class (CalculateFare).

None of those classes will be touching each other except via startActivity(). Pass data between activities via Intent extras or via a central data model (e.g., database).

When the class is called during runtime of the application I get the following message in the LogCat

That is because you need to delete your constructor.