Some testing results

[vvv444]

Hi,

Great application! Thanks!
I tested it on Nokia N86. Although used it only for position logging,
not for maps.

Several issues I found:

1. I don't understand much in the NMEA format, but I think the
latitude/longitude are written wrong when the minutes less than 10.
For example the following line: "$GPGGA,074054,329.7892,N,3450.7128,E,
1,10,1,89.0,50.0,M,,*9"
329.7892,N should have been 3209.7892,N in my case (note the zero!)

2. Sometimes the log file contains "null" in a beginning of a line:
"null$GPRMC,...."

3. The time is written seems to be local time. But should been UTC
according to the NMEA format!

4. Sometimes the line-feed character is missing before the $GPRMC
line. So two lines appear as one.

5. For some reason my phone hangs for a long time (more than a minute)
after every permission conformation dialog. I'm now checking if there
is a way to get a free certificate only for my phone. If I succeed
I'll update you if this solves the problem.

I would gladly fix/investigate these myself and send you patch, as I
usually do with free apps I use. But unfortunately you haven't
published the source code :(
Why not, btw? You intend on selling the app in the future?

Many thanks,
Vasili

[Lluis Gesa]

Hi, Thanks for the comments:

On Fri, May 28, 2010 at 10:06 AM, vvv444 <vvv...@gmail.com> wrote:

1. I don't understand much in the NMEA format, but I think the
latitude/longitude are written wrong when the minutes less than 10.
For example the following line: "$GPGGA,074054,329.7892,N,3450.7128,E,
1,10,1,89.0,50.0,M,,*9"
329.7892,N should have been 3209.7892,N in my case (note the zero!)

Correct!. It has been fixed. I hope to release a new version on few days, I've was out during very long time.
 

2. Sometimes the log file contains "null" in a beginning of a line:
"null$GPRMC,...."

Yes, eGPSTrack redirected to file directly the information from GPS, without no checks in file written. Has been fixed too.
 

3. The time is written seems to be local time. But should been UTC
according to the NMEA format!

mmm.. I will check it.
 

4. Sometimes the line-feed character is missing before the $GPRMC
line. So two lines appear as one.

To check, but in principle will not affect, each NMEA sentence has a fixed number of parameters and finalize with a CheckSum.
 

5. For some reason my phone hangs for a long time (more than a minute)
after every permission conformation dialog. I'm now checking if there
is a way to get a free certificate only for my phone. If I succeed
I'll update you if this solves the problem.

 
I have no idea about what can be the cause.. Maybe you are rigth and is a problem related with permissions..

I would gladly fix/investigate these myself and send you patch, as I
usually do with free apps I use. But unfortunately you haven't
published the source code :(
Why not, btw? You intend on selling the app in the future?

 

No, my idea is no to send it in future. I'm only developing it as a personal hobby, and also learn about mobile developing.

Will the code released ? Maybe in future. But not now,  the code , and the project, is not soo good to be released. I don't want to release a code with no documentation, with no correct structure, I'm a bit maniatic in this way: do a correct free source code proyect needs a lot of time to polite things not directly related with development itseft, and now,Ii prefer to develop instead of, "give a good look" :P

Thanks a lot,
Lluis

Many thanks,
Vasili

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[Vasili Galka]

Hi,

Thanks for prompt response!

For now I've just written a script to process the log and fix the above issues. It's a good enough temporary solution.

About signing/permissions. After some research I see that there is no way to sign application for free. Even not for a specific IMEI! That makes the situation with Java apps even worse than with regular apps. These at least I can sign using OPDA developer certificate for myself. Nokia are total idiots! I'm starting to think about Android more and more :)

And yes, I totally understand you. I wouldn't publish messy code too :)

Best,
Vasili

[Lluis Gesa]

On Fri, May 28, 2010 at 2:35 PM, Vasili Galka <vvv...@gmail.com> wrote:

Hi,

Thanks for prompt response!

For now I've just written a script to process the log and fix the above issues. It's a good enough temporary solution.

I've uploaded a betha version in :

 http://egpstrack.hlod-wig.org/v0.5betha/eGPSTrack.jar

With all fixes described in last email. There are some others improvements, like loading of gpx files. An initial aproach of autorouting (that is, eGPSTrack informs you about next point to reach). Memory & speed has also been improved.

About signing/permissions. After some research I see that there is no way to sign application for free. Even not for a specific IMEI! That makes the situation with Java apps even worse than with regular apps. These at least I can sign using OPDA developer certificate for myself. Nokia are total idiots! I'm starting to think about Android more and more :)

No only Nokia, Java applications needs to follow some standards from SUN, and signing is not easy. In other mobiles, you can hack, and simulate a valid application, but it is a security problem for those mobiles. In Nokia, segurity is robust. I was looking for a developer certificate to sing it. But the essence is that, to ensure a full utilization in several mobiles, models ,  is needed more that one certificate, because not all mobiles has the same CA bbdd.. :(

 
Regards from Barcelona,
Lluis