Subsurface for Android

[Aurélien PRALONG]

Hello all.

> One thing that I failed to think through (and this affects both the
> server and the client side) is that we are likely to run into situations
> where we don't have connectivity when the diver is out on a boat. In
> that case it would be great if the Android app could remember the data
> (and this could be several data sets - it's not unusual that you would
> go to three or four different dive sites before the boat gets back to
> shore and within reach of a network) and then send them off one by one
> once network connectivity is restored. But this of course means that we
> need to add a timestamp to each data set so it is easier to correlate
> them to the dive information on the dive computer.

OK, I'll add history via android DB, if network fails, and a button to
batch send positions. For URL, I'll use format :
http://host/api/dive/<loginID>/<lat>/<long>/2012-10-31/10:12:14/<location
name>, with GMT timezone.

> One other note - the files you sent me had no copyright and no license
> in them. I assume you intend this to be open source and will at some
> point make this available under a reasonable license of your choice and
> with your Copyright attached? The rest of Subsurface is under GPLv2, as
> is the POC server implementation that Pierre has contributed...

I'm fine with GPL V2. I'll include headers / license file in next release.


> So maybe we can get these parts to work together tomorrow and have
> something "testable" before the weekend?

Concerning modifications, i will try to make the updates today or tomorrow
evening (max. 10/05 1:00 AM GMT), so you can give good logs :). From this
update, as Pierre-Yves said, it would be great if we had a centralized Git
repository.

Aurélien

2012/10/3 Dirk Hohndel <dirk at hohndel.org>

> Aurélien PRALONG <aurelien.pralong at gmail.com> writes:
>
> > Hello Dirk,
> >
> > I've developped the Android app you requested on Google+ (see attached
> > zip). I have ran out of time, so I could not test on device, but I think
> it
> > should do the trick. Please let me know if it works or not, so I can do
> > fixes. Especially, the app needs Android V2.3 to work correctly.
>
> I love the open source community. I had this idea about 12 hours ago and
> we already have POC implentations of two of the three components we need
> here.
>
> I copied the two main authors and the subsurface mailing list so others
> can chime in and help.
>
> Aurélien - the app is a great start. I played with it in the emulator
> and it's pretty close to the proof of concept that I was looking for.
>
> One thing that I failed to think through (and this affects both the
> server and the client side) is that we are likely to run into situations
> where we don't have connectivity when the diver is out on a boat. In
> that case it would be great if the Android app could remember the data
> (and this could be several data sets - it's not unusual that you would
> go to three or four different dive sites before the boat gets back to
> shore and within reach of a network) and then send them off one by one
> once network connectivity is restored. But this of course means that we
> need to add a timestamp to each data set so it is easier to correlate
> them to the dive information on the dive computer.
>
> One other note - the files you sent me had no copyright and no license
> in them. I assume you intend this to be open source and will at some
> point make this available under a reasonable license of your choice and
> with your Copyright attached? The rest of Subsurface is under GPLv2, as
> is the POC server implementation that Pierre has contributed...
>
> Pierre - I assume the changes I suggested to transfer the date/time
> would be easy enough to add on the server side. Should we just agree on
> a URL format like this:
>
> http://host/api/dive/<loginID>/<lat>/<long>/<UTC date>/<UTC
> time>/<location name>
>
> Then the app can cache the data sets if there is no connectivity and
> send them out and the server still can provide the correct time stamp
> when querried from the desktop application.
>
> Thanks to both of you - the responsiveness was awesome.
>
> One reason I tried to get this kicked off once I had the idea is that
> Linus and I will be on a dive trip starting next weekend (we'll spend
> Thursday flying to Japan) and we'll both have Android phones with us -
> so I'd love to get this far enough along that we can try the proof of
> concept app and server - even if I will delay the integration into the
> Subsurface desktop application until after the pending 2.0 release...
>
> So maybe we can get these parts to work together tomorrow and have
> something "testable" before the weekend?
>
> Thanks again
>
> /D
>
>
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