- serializable, parcelable
- Service, IntentService. What is inside?
- Fragment, FragmentTransaction, commit. How does the
commitmethod work? Is
- Synchronization, Inter-process communication: mutexes, semaphores, events, etc.
- Collections in java
- Memory leaks due to rotation with AsyncTask
- What is UI-thread, how does it work?
- Which lifecycle methods of activity will be guaranteed invoked if OS destroys the one?