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From "Shazron Abdullah (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CB-55) Geolocation.prototype.watchPosition uses timeout option in wrong way
Date Thu, 03 May 2012 01:21:48 GMT

     [ https://issues.apache.org/jira/browse/CB-55?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shazron Abdullah updated CB-55:
-------------------------------

    Fix Version/s: 1.8.0
    
> Geolocation.prototype.watchPosition uses timeout option in wrong way
> --------------------------------------------------------------------
>
>                 Key: CB-55
>                 URL: https://issues.apache.org/jira/browse/CB-55
>             Project: Apache Callback
>          Issue Type: Bug
>          Components: iOS
>            Reporter: Shazron Abdullah
>             Fix For: 1.8.0
>
>
> reported at: https://github.com/phonegap/phonegap-iphone/issues/305
> by: https://github.com/all4ip
> I have following scenario:
> I want aprox. every second a position update. I do not want cached positions. I am willing
to wait up to 30 seconds for the first valid position.
> So my params would be:
> var options = { timeout: 30000, maximumAge: 0, enableHighAccuracy: true };
> This is identical to w3c definition.
> But the timout value is also used for the internal endless loop of watchPosition. So
I can either have updates every second and can wait up to 1 second for valid position or wait
up to 30 seconds for valid position and get updates only every 30 seconds, too!
> The timout option should be used like the doc says:
> "The maximum length of time (msec) that is allowed to pass from the call to geolocation.getCurrentPosition
or geolocation.watchPosition until the corresponding geolocationSuccess callback is invoked."
> This happens correctly, when the params are passed to getCurrentPosition().
> But the continuous update in watchPosition uses the same value for the timer, too:
> setInterval(intervalFunction, params.timeout);
> The interval should be a static value i.e. 1000 ms or 500 ms or a variable frequency.

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