[jira] [Comment Edited] (CB-12251) on IOS device Corodova Geolocation GetWatchPosition not giving current location

["Anshu Raj (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CB-12251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15751869#comment-15751869 ] 

Anshu Raj edited comment on CB-12251 at 12/15/16 5:12 PM:
----------------------------------------------------------

Thanks Kerri for your response. 

Here is a code snippet which we have used on a button click. This gives user's current Latitude and Logitude and using Google Or ArcGIS api we reverse Geocode to get the address. However I have tested it and we don't get the current address rather the address where I visited last. Seems like Geolocation API is not providing the current latitude and longitude immediately. 

Just so you know I have tried the combination all the attributes - EnableAccuracy, maximumage etc and nothing works. Again this issue is only on IOS Iphone App and our user will be on move constantly. Tried both- GetCurrentLocation and GetWatchPosition. 

              navigator.geolocation.watchPosition(showCurrentLocation, locationError, { maximumAge: 0, timeout: 30000, enableHighAccuracy: true });

Your help will be greatly appreciated. 


was (Author: anshu.raj90):
Thanks Kerri for your response. 

Here is a code snippet which we have used on a button click. This gives user's current Latitude and Logitude and using Google Or ArcGIS api we reverse Geocode to get the address. However I have tested it and we don't get the current address rather the address where I visited last. Seems like Geolocation API is not providing the current latitude and longitude immediately. 

Just so you know I have tried the combination all the attributes - EnableAccuracy, maximumage etc and nothing works. Again this issue is only on IOS Iphone App and our user will be on move constantly. Tried both- GetCurrentLocation and GetWatchPosition. 

                var accLatLong = {};

navigator.geolocation.getAccurateCurrentPosition = function (geolocationSuccess, geolocationError, geoprogress, options) {
    var lastCheckedPosition,
        locationEventCount = 0,
        watchID,
        timerID;

    options = options || {};

    var checkLocation = function (position) {

        lastCheckedPosition = position;
        locationEventCount = locationEventCount + 1;
        // We ignore the first event unless it's the only one received because some devices seem to send a cached
        // location even when maxaimumAge is set to zero
        if ((position.coords.accuracy <= options.desiredAccuracy) && (locationEventCount > 1)) {
            clearTimeout(timerID);
            navigator.geolocation.clearWatch(watchID);
            foundPosition(position);
        } else {
            geoprogress(position);
        }
    };

    var stopTrying = function () {
        navigator.geolocation.clearWatch(watchID);
        foundPosition(lastCheckedPosition);
    };

    var onError = function (error) {
        clearTimeout(timerID);
        navigator.geolocation.clearWatch(watchID);
        geolocationError(error);
   };

    var foundPosition = function (position) {
        geolocationSuccess(position);
        debugger
        accLatLong = position;
        //{
        //    "Latitude": position.coords.latitude,
        //    "Longitude": position.coords.longitude,
        //}
    };

    if (!options.maxWait) options.maxWait = 10000; // Default 10 seconds
    if (!options.desiredAccuracy) options.desiredAccuracy = 20; // Default 20 meters
    if (!options.timeout) options.timeout = options.maxWait; // Default to maxWait

    options.maximumAge = 0; // Force current locations only
    options.enableHighAccuracy = true; // Force high accuracy (otherwise, why are you using this function?)

    watchID = navigator.geolocation.watchPosition(checkLocation, onError, options);
    timerID = setTimeout(stopTrying, options.maxWait); // Set a timeout that will abandon the location loop
};


Your help will be greatly appreciated. 

> on IOS device Corodova Geolocation GetWatchPosition not giving current location
> -------------------------------------------------------------------------------
>
>                 Key: CB-12251
>                 URL: https://issues.apache.org/jira/browse/CB-12251
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: CordovaJS, iOS
>    Affects Versions: 4.1.1
>         Environment: IPhone, IOS 
>            Reporter: Anshu Raj
>            Priority: Critical
>              Labels: features, geolocation, mydistrict
>
> Feature: We have created a Mobile App using PhoneGap and Corodova Plugin to get a constantly moving user's current location. As soon as he stops, he will perform an action in our App which will send his current location and we convert it into Address using reverse geocoding. We then show the history of user's visits. 
> We are using GetWatchPosition and GetCurrentLocation to implement above feature. 
> Issue: We are not getting user's current Latitude and Longitude rather we get their last Latitude and Longitude where he last visited. Hence user's visits is wrongly registered based on where he was at that point of time. Somewhere the API is not sending us the latest Latitude and Longitude.
> Above is working fine in Android and we are getting updated Latitude and Longitude
> Please help!



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