How to send notification from AsyncTask while main Activity is not started?

Question

I have an AsyncTask which starts on boot (called by a service). In some cases I would like to send a notification to start the main Activity. My problem comes when I try to call:

NotificationManager notManager = (NotificationManager) getSystemService(ns);

where eclipse shows me an error because AsyncTask hasn't got getSystemService method. Any idea?

Thank you.

Have you tried using `onProgressUpdate` to do something like that? — BlackHatSamurai, Jul 12 '12 at 01:16

score 3 · Accepted Answer · answered Jul 12 '12 at 02:48

Because getSystemService is a method of Context class. Check it out here.

Before you call the function, create a Context variable in your AsyncTask. Then initialize it in your constructor, i.e.

Context context;

public MyAsyncTask(Context contextin)
{ context = contextin;}

Then use this context variable to call your function:

NotificationManager notManager = (NotificationManager) context.getSystemService(ns);

Do not forget to input your context when you are executing AsyncTask:

MyAsyncTask mytask = new MyAsyncTask(getApplicationContext());
mytask.execute();

I also have a feeling that an IntentService would be more suitable for your needs.

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz · Answer 2 · 2012-07-12T19:29:28.230

1

You could start a service that launches your application at the end of the background thread in your asynctask.

edited Jul 12 '12 at 19:29

answered Jul 12 '12 at 03:12

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

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How to send notification from AsyncTask while main Activity is not started?

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