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Q: 

Common tasks in Activities methods - how to organize them?

I have some common actions fired in onPause() and onResume() methods. (Like registering and unregistering BroadcatsReceivers)

Now I put them in abstract classes and extend Activity classes.

After creating some abstract classes with common actions I end up with situation when I can't extend Activity because of Java's lack of multiple inheritance.

How you deal with such things? Do you duplicate code or do something smarter?

I'm wondering if it's wider problem - not only concerning Android, but Java language.

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