what are the mandatory functions to be implemented in custom adapter?
onCreate(), onStart(), getView()
getCount(), getView(), getItem(), getItemId()
only getView() is mandatory to implement.
only getView() & getCount() is mandatory to implement.
If one is implementing custom adapter by extending BaseAdapter, then he or she has to give implementation of all 4 functions mentioned getView(), getItem(), getCount(), getItemId().
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