How to connect two activities?

Question

I'm looking over internet for the solution but I can't find anything.

I have a big system with multiple interfaces.

In our company we have an uml repository where we have an activity diagrams for all use cases.

And here: I know that I should use actions on activity diagram and I can't connect two activities by control flow. But We want to have also reusable actions/activities for interface methods with diagram for the method body.

Is there any possibility to connect two activities by object flow or control flow?

Answer 1

I can't connect two activities by control flow
Is there any possibility to connect two activities by object flow or control flow?

you want to call an activity from an other, for that just use a call behavior action where the behavior is the called activity.

From §16.3.4.1 Call Behavior Action page 454 of formal/2017-12-05 :

The call of an Activity is indicated by placing a rake-style symbol within the Action symbol (see Figure 16.15, left). The rake resembles a miniature hierarchy, indicating that this invocation starts another Activity that represents a further decomposition. An alternative notation in the case of an invoked Activity is to show the contents of the invoked Activity inside a large round-cornered rectangle symbol (see Figure 16.15, right).