Github user avishekcode commented on the issue:
https://github.com/apache/cordova-plugin-geolocation/pull/87
@shazron @filmaj
Hi!
I literally, just downloaded the current plugin, and without my
modification, I get these warnings constantly via Xcode, while testing on
iPhone 5s:
2017-04-26 17:45:32.151697-0400 TabCab Inc[3927:2025999] THREAD WARNING:
['Geolocation'] took '10.250000' ms. Plugin should use a background thread.
2017-04-26 17:45:32.256468-0400 TabCab Inc[3927:2025999] THREAD WARNING:
['Geolocation'] took '33.067871' ms. Plugin should use a background thread.
2017-04-26 17:45:52.700650-0400 TabCab Inc[3927:2025999] THREAD WARNING:
['Geolocation'] took '25.637939' ms. Plugin should use a background thread.
2017-04-26 17:46:18.191620-0400 TabCab Inc[3927:2025999] THREAD WARNING:
['Geolocation'] took '10.547852' ms. Plugin should use a background thread.
Device: iPhone 5s, but I believe it happens even in newer phones, if I am
using the plugin for applications like Uber (Motion capture in the background).
Now, I apologize if I broke some rules while trying to implement the
solution. I will try to dig into the rules, and any quick suggestion how to fix
the problem otherwise?
My solution puts the function in background thread, stops all warnings, and
it increases the performance of the plugin and the overall app.
My use of the plugin in my applications, is as follows:
function getAccurateGPS(GPSok,GPSerr,GPSing,options,Abort)
{
var lastPos,locECnt=0,watchID,navTim;options=options || {};
if(Abort){clearTimeout(navTim);navTim=null;navigator.geolocation.clearWatch(watchID);}
else
{ var checkLocation=function(position)
{ lastPos=position;locECnt=locECnt+1; //Ignore first
event unless it's the only one because some devices send cached location even
with maxaimumAge=0
if((position.coords.accuracy<=options.desiredAccuracy)
&&
(locECnt>1)){clearTimeout(navTim);navTim=null;navigator.geolocation.clearWatch(watchID);foundPos(position);}else{GPSing(position);}
};
var
stopTrying=function(){navigator.geolocation.clearWatch(watchID);foundPos(lastPos);};
var
onError=function(error){clearTimeout(navTim);navTim=null;navigator.geolocation.clearWatch(watchID);GPSerr(error);};
var foundPos=function(position){GPSok(position);};
if(!options.maxWait) options.maxWait=10000;
if(!options.desiredAccuracy) options.desiredAccuracy=5;
if(!options.timeout)
options.timeout=options.maxWait;
options.maximumAge=0;options.enableHighAccuracy=true;
watchID=navigator.geolocation.watchPosition(checkLocation,onError,options);
navTim=setTimeout(stopTrying,options.maxWait);//Timeout
}
}
Basically, my applications require constant motion tracking, and I try to
capture the most accurate position available.
Please let me know if there is anything else you need from me, or if you
have any suggestions.
Thanks!
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