Android access activity method inside service

Question

How to call an Activity's non-static method from inside a service onStart()?

check this link. http://stackoverflow.com/questions/2463175/how-to-have-android-service-communicate-with-activity — Raghu Nagaraju, May 28 '12 at 11:47

score 5 · Answer 1 · edited May 23 '17 at 12:15

5

How to call an Activity's non-static method from inside a service onStart()?

You can't.

However, there are many ways to have a service communicate with a running activity, and I outline some of them here: How can I update information in an Android Activity from a background Service

edited May 23 '17 at 12:15

Community

answered May 28 '12 at 11:24

CommonsWare

I know this is an old post, but I have a question, I need to start activity within a service and get result of that activity. Is this possible? Any workaround? – Saber Amani Apr 06 '16 at 12:58
@saber: "Is this possible?" -- yes, though I recommend that you have good life insurance, if you will be popping up activities from the background that the user does not appreciate. Your service can call `startActivity()`. Your activity can then call `startService()` to send the results, or call `bindService()` and talk to your service via a binder, or use an event bus implementation (`LocalBroadcastManager`, greenrobot's EventBus, Square's Otto) to raise an event that the service picks up. – CommonsWare Apr 06 '16 at 13:04
Thanks for your reply, "though I recommend that you have good life insurance", :D ;) Since I don't have good one, I think have to hook up with `LocalBroadcastManager`. – Saber Amani Apr 06 '16 at 13:13

score -2 · Answer 2 · answered Jun 30 '18 at 21:41

-2

This could help ..

In activity define

static MyActivity instance;

then set value MyActivity.OnCreate

instance = this;

In your service

MyActivity activity = MyActivity.instance;

        if (activity != null) {
            // we are calling here activity's method

        }

answered Jun 30 '18 at 21:41

Hussein mahyoub

2

nooo, god. no, god, please, no! no no! Never do that. Never. Never retain a static instance of your `Activity`. Just don't. – Bartek Lipinski Jun 16 '19 at 10:04

2 Answers2