android - Getting Reference to Calling Activity from AsyncTask (NOT as an inner class) -

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is @ possible, within asynctask not inner class of calling activity class, reference instance of activity initiated execution of asynctask?

i aware of this thread, doesn't address how reference calling activity. suggest passing reference activity parameter asynctask constructor, however, it's reported doing result in nullpointerexception.

so, i'm @ loss. asynctask provides robust functionality, , don't want have duplicate inner class in every activity wants use it. there must elegant solution.

the "elegant solution" try passing parameter (to constructor or execute()) , see if works, rather assuming person asked previous question (then answered own question twice) knows doing. can think of nothing intrinsic asynctask cause activity bad constructor parameter , every other object fine.

now, haven't passed activity (or other context) parameter asynctask, because asynctasks private inner classes. in fact, fact want public asynctask me code smell, suggesting these tasks should mediated service or other control point. but, that's me.

update

a better answer handling pattern can found here: background task, progress dialog, orientation change - there 100% working solution?


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