saving data update service for an android app

I am building an android app for fetching internet data and rendering it as a list. The data is changing every minute, so I made a service and used a Timer to load the data with an interval.

My question is that:

I want to know when the app (not a particular activity) goes to the background, for example, user pressed the home button, in that case, I want to pause the service in order to save battery.

I want to know when the phone is sleeping (screen dimmed), in that case, I would like to pause the service too.

Any ideas?

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Pause your service in onPause (and resume in onResume ).

Unless you have a wake lock, your app will not run when the phone is sleeping.

If you're bound to a foreground app, why use a service in the first place?

To elaborate on 1: I understand you're saying "app", not "a particular activity", but your best bet is to use Activity.onPause and Activity.onResume . If anything, you can add a short delay so that nothing happens if onPause is followed immediately by onResume.

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