Android - AsyncTask and error handling

Question

I'm converting my code from using Handler to AsyncTask. The latter is great at what is does - async updates and handling of results in the main UI thread. What's unclear to me is how to handle exceptions if something goes haywire in AsyncTask#doInBackground? The way I do it is to leave error Handler and send message to it. It works fine but is it the "right" approach and is there better alternative? Also I understand that if I define the error Handler as Activity field it should execute in UI thread, however, sometimes (very unpredictable) I will get Exception saying that my code (which is triggered from Handler#handleMessage is executed in the wrong thread. Should I initialize error Handler in Activity#onCreate instead? Placing runOnUiThread into Handler#handleMessage seems redundant but that executes very reliably

Answer 1

It works fine but is it the "right" approach and is there better alternative?

I hold onto the Throwable or Exception in the AsyncTask instance itself and then do something with it in onPostExecute(), so my error handling has the option of displaying a dialog on-screen.

Answer 2

Thanks for the tip. Neat way of handling exceptions.