java - Pass current activity to a service so that the service can manipulate the view -

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What I want to be able to do is toggle the visibility of an element in my activity of a service.

How can I turn my service class back into the message / call function in my activity?

What user exits from the app and the service is still going on, but obviously, to call within the work without walking?

Thank you.

I do not think this is a good idea. This is a good answer to inform activity from the service ..

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