ubuntu-phone team mailing list archive

[Christian Dywan <christian.dywan@xxxxxxxxxxxxx>]

Hey Frans,

First off, I'm looking forward to it. Proper offline navigation is 
sorely needed!

However frankly requiring a lengthy map conversion process on a 
separate PC will impede adoption. Everyone doesn't have a beefy machine 
sitting at home. Plus you need to understand it. And most crucially, 
and I think I'm not the exception, when you know you need that map you 
may already be on the road, with no access to that beefy or possibly 
any computer.

I realize I'm not providing the answer you're asking for. But as I am 
very interested in this project, this is my feedback: Figure out 
hosting, and ways to downsize the files. The HERE app on Android shows 
that it can be done.

Regards,
   Christian

Am Di, 2. Jun, 2015 um 3:18 schrieb Frans Schreuder 
<fransschreuder@xxxxxxxxx>:
> Dear Ubuntu-phone mailing list,
>
> I have spent a few weeks developing an offline routing / navigation
> application (LGPL) based on openstreetmaps / libosmscout.
> I want to publish the app in the Ubuntu App Store, but I am facing a
> problem: I need read access on a location on the SD card. I will 
> explain
> why.
>
> 1.) The maps take quite some space on the device (Netherlands is 
> 1.3GB,
> Germany is 4+ GB). At least on the BQ Aquaris this space is not
> available in the home directory, at least not if you also want to 
> remain
> with some space available.
>
> 2.) The maps have to be converted to a binary format with a tool on 
> the
> PC. Until I got some server space and time to host some readily
> converted maps, the user will have to transfer maps manually to the
> phone. If this would be the app data space, that location is not by
> default readable if you browse the phone on the PC.
>
> 3.) Converting the maps on the phone is not really an option, as the
> process uses several GB as temp space, and on an i7 pc it can take 
> over
> 1 hour for a map of a small country.
>
> For now there are no good apparmor rules that matches the need of this
> application, Picture read could be possible, however it needs the maps
> to be placed in <SD_CARD>/Pictures/osmscout. That is an ugly solution,
> but it works.
> Another solution is to set the app as unconfined, and use the location
> <SD_CARD>/Maps/osmscout. However this is not the solution to allow for
> any app, I think this app really adds value to the Ubuntu phone.
> Would it be possible to create an app-specific rule that allows (Read,
> and maybe later Write) access to <SD_CARD>/Maps/? Or otherwise to 
> allow
> this app to be published as unconfined?
>
> The source code for the app can be found here:
> https://github.com/fransschreuder/libosmscout
>
> The tool to convert maps can be obtained on a desktop:
> sudo apt-add-repository ppa:fransschreuder1/osmscout-import
> sudo apt-get update
> sudo apt-get install osmscoutimportgui0
>
> Thanks for your comments,
>
> Regards,
>
> Frans Schreuder
>
>
>
>
>
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