Welcome!

Welcome to the official BlackBerry Support Community Forums.

This is your resource to discuss support topics with your peers, and learn from each other.

inside custom component

Android™ Runtime Development

Reply
New Contributor
Posts: 3
Registered: ‎05-03-2013
My Device: 9900
My Carrier: A1

GPS timestamp problems on BB10

We are using GPS for continous tracking of a user's sport activity. We've seen that we often receive GPS locations with a timestamp which is older than the last GPS position. How can this happen. Is this a known issue for a certain OS/firmware version? See below log file output for an example:

 

location_id,system_timestamp,gps_timestamp
1, 1365411706.215, 1365411798.411
2, 1365411707.120, 1365411778.916
3, 1365411708.108, 1365411780.918
4, 1365411709.091, 1365411779.268
5, 1365411710.094, 1365411790.599
6, 1365411711.131, 1365411817.781
7, 1365411712.114, 1365411815.035
8, 1365411713.185, 1365411873.108
9, 1365411714.170, 1365411870.984
10 ,1365411715.178, 1365411867.561

 

BlackBerry Development Advisor
Posts: 36
Registered: ‎01-26-2012
My Device: 9900
My Carrier: T-Mobile DE

Re: GPS timestamp problems on BB10

Hi,

following information is needed to understand the issue better:

Exact model of the device you are using: there are differences between Dev Alpha A and B (and C), so we need to know: settings menu --> About--> General-->Model number

Also, can you please confirm the version of the OS you are running it on? The latest recommended versions are:

OS: 10.1.0.1485 (check on the phone in Settings / About / OS)

Also can you explain the trace you pasted. I can't see through that listing the error you are describing

Thanks

 

New Contributor
Posts: 3
Registered: ‎05-03-2013
My Device: 9900
My Carrier: A1

Re: GPS timestamp problems on BB10

[ Edited ]

Hi,

 

one phone model is STL100-2 with OS 10.0.10.90. How can we update to 10.1.0.1485?

The other one is BlackBerry 10 Dev Alpha, model number "Dev Alpha", OS 10.0.10.263.

Explanation of trace:

The 2nd value in each line is the phone's system timestamp (which increases about 1s for each line). The 3rd value is the GPS timestamp. It is not incremented constantly but is also decremented (even by some seconds, e.g. 20 seconds between line 1 and line 2) over time which is a bug obviously.

 

Best,

Christian

BlackBerry Development Advisor
Posts: 36
Registered: ‎01-26-2012
My Device: 9900
My Carrier: T-Mobile DE

Re: GPS timestamp problems on BB10

you will need to wait for the Z10 update until your carrier approved the recent build.

Dev Alpha B can be updated here: https://developer.blackberry.com/blackberry10devalpha/

would be very interested to see if the issue will be there after the update.

I escalated the issue internally through the Android runtime team. Will get back to you soon.

BlackBerry Development Advisor
Posts: 140
Registered: ‎04-19-2013
My Device: BlackBerry Z10

Re: GPS timestamp problems on BB10

There was a GPS timestamp issue in 10.0.  It has been fixed in 10.1.

New Contributor
Posts: 3
Registered: ‎05-03-2013
My Device: 9900
My Carrier: A1

Re: GPS timestamp problems on BB10

Thanks for the update. One of our users just reported that he upgraded to 10.1 and it works now. Thanks for confirmation.