How to detect user inactivity?

Question

I'd like to run a service/background task that would detect user inactivity (that would be touching the screen or unlock the phone).

It would be used to detect that the phone is lost, and then send position informations to a server. Automatically (oh yeah).

How could I detect that ?

Thanks.

score 2 · Accepted Answer · edited May 23 '17 at 10:26

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I think you need a background service to look if the android is not on user presence.

You can use android sensors, like Accelerometer, to detect if the phone is active. (if someone get the phone, the sensors will change) And, you will need and wake up the service, in a regular amount of time, to check if the sensor has changed. If the sensor not changed at all in a large amount of time, the phone was lost.

Look at this: How to detect user presence in android?

And this: https://developer.android.com/training/run-background-service/index.html

edited May 23 '17 at 10:26

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answered Jul 29 '14 at 15:39

Jordan Junior

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Not a bad idea. I'll combine it with the solution I just found :) – Salamandar Jul 30 '14 at 07:51
BTW, I wasn't sure for a background service as I've never done that before, so thanks ;) – Salamandar Jul 30 '14 at 07:58

score 2 · Answer 2 · edited May 23 '17 at 10:26

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You should use Broadcast Receiver for ACTION_SCREEN_ON, ACTION_SCREEN_OFF and ACTION_USER_PRESENT.

Read more here Android - detect phone unlock event, not screen on

edited May 23 '17 at 10:26

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answered Aug 05 '14 at 18:21

QArea

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Thanks, i'll try that. But if the user disabled the LockScreen, will this intent be still launched ? (I'll test it if i can ^^) – Salamandar Aug 07 '14 at 17:04
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@Salamandar yes, it should work as well. You're welcome :) – QArea Aug 08 '14 at 13:02

score 1 · Answer 3 · answered Jul 30 '14 at 07:54

Well, in fact I found an answer myself :p

I didn't think about screen unlock (or turning on) before writing down my answer… And then I found this : http://thinkandroid.wordpress.com/2010/01/24/handling-screen-off-and-screen-on-intents/

I think it'll help me…

How to detect user inactivity?

3 Answers3