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POWhat is the most battery-efficient way of monitoring proximity to a number of locations in Android?
 

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  1. POWhat is the most battery-efficient way of monitoring proximity to a number of locations in Android?
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    <p>I have an app which will take some (internet) action every time the user approaches any one of a set of locations (for example, let's say it notifies a server whenever I am near a Starbucks shop, so my coffee habits can be analysed).</p> <p>What's the most battery-efficient (yet reliable and relatively accurate) way of causing the phone to do something whenever it's at a certain location? I don't need perfect location accuracy - within 50m or so is fine.</p> <p>Currently, I set a ProximityAlert for each location with a 100m radius, and have it raise an Intent, which is then served by a Service which runs in the background. The service also includes an Alarm which causes a download every three hours or so.</p> <p>The Service itself doesn't appear to drain any significant amount of battery - the battery is all drained by "Android OS". According to the Android 4.1.2 Battery monitor, Android OS is using 3x as much CPU as a phone without my app, and has "stay awake" on for most of the time.</p> <p>Would changing it to an IntentService make a difference?</p> <p>Would reducing (or increasing) the radius of the alert make a difference?</p> <p>Would converting it to a Geofence (<a href="https://developer.android.com/training/location/geofencing.html" rel="nofollow">https://developer.android.com/training/location/geofencing.html</a>) make much difference?</p> <p>Can I set it to use a cheaper location service unless it thinks it's close to one of the locations (or will it do that automatically?)</p>
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    1. USRichard Russell
    1. USRichard Russell
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    1. COmaybe you should try [Geofencing APIs](http://developer.android.com/google/play-services/location.html) - [references](http://developer.android.com/reference/com/google/android/gms/location/Geofence.html)
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      1. POWhat is the most battery-efficient way of monitoring proximity to a number of locations in Android?
      1. USSelvin
    2. COThanks - added this to the question
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      1. USRichard Russell
 

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