CODEWITHSUNDEEP
javascriptcordovageolocationgpsphonegap
user1688401
user1688401

Reputation: 1871

Geolocation fails if app sent to background

I'm developing a simple app with phonegap which every 30 seconds send user current coordinates to my database via ajax call.It works very well

$(document).ready(function() {
    setInterval(function() {
            SetLocationUpdates();
        }, 30000);
         });

but if the user navigates to another app(google maps app) or if I open google maps app with this code

<div><a href="geo:41.897096,27.036545">Open maps app</div>

it(sending coordinates to my database via ajax) fails because getCurrentPosition does not work maybe google maps lock it althoug my app is still work(my app and google map app work separately.Two apps work at same time.Maybe my app go background)

More specifically, it does nothing.

 navigator.geolocation.getCurrentPosition(SetLocationUpdates, onError);

this line not execute. The success or error callbacks are never called, and setting a timeout does not affect this. I am using Phonegap Build to compile the app from html and javascript. What should I do?

Upvotes: 1

Views: 1550

Answers (2)

McMurphy
McMurphy

Reputation: 1264

Please be aware that Firefox currently continues to work when the phone is asleep or the App is backgrounded. (I believe this is a bug)

IMHO the most appropriate and battery friendly solution relies on ServiceWorkers receiving and actioning TravelEvents from the TravelManager.

See this Web App for proof of how well Background geolocation fits with ServiceWorker infrastructure. All source can be found here including a aaa_readme.txt.

Please ask W3C/IETF to standardize this and your UA vendors to implement it!

Upvotes: 2

DaveAlden
DaveAlden

Reputation: 30366

You need a native background geolocation solution - JS execution on the main thread gets paused when your app goes into the background.

In my experience, the most resilient solution is cordova-background-geolocation-lt. I've tested on multiple OS versions, including Android 8 and iOS 11, and this has worked consistently on all.

Upvotes: 2

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