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Editorial Team
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Asked: 2026-05-14T04:06:19+00:00

I would like to implement the following simple pattern in an android app: Activity

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I would like to implement the following simple pattern in an android app:

  1. Activity A starts activity B
  2. In activity B the user fills out a simple form F, then hits submit
  3. Activity B then starts an AsyncTask C that posts F to a url, and immediately returns to Activity A
  4. Back in activity A, the user continues with business as usual while C is still working. But once C is complete, the user should be notified, in particular if the result was a failure.

The problem I have is with steps 3 and 4. Since C is started by B, how can A get notified? Hmm, not sure if this is clear to anyone but me …

Anyway, right now I am stuck with a solution where step 3 instead looks like this:

3″. Activity B returns the content of the form to activity A. A then starts AsyncTask C to post the form and continues as usual.

But it just seems a bit unnecessary that A also needs to handle the form, it should just be B’s responsibility. Any other ideas or solutions out there?

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1 Answer

  1. Editorial Team

    Why not have B acquire the information needed to run the task, then pass that back to A? The onPreExecute() and onPostExecute() happen in the main thread of Activity A.

    Never mind, I just saw that in your description. But yes – B handles it all – A just submits the data to the URL.

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