[GraphHopper] App crashed getting response from GraphHopperAPI.rout(request)

Peter K peathal at yahoo.de
Mon Apr 29 06:30:31 UTC 2013


AStar can be used like it is described in the wiki:
https://github.com/graphhopper/graphhopper/wiki/Low-Level-API
Instead of DijkstraSimple use AStar

But be aware that the normal algorithms will require more RAM than the
contraction hierarchy* optimized ones.
So only mid-sized countries are possible on a mobile platform as our
AStar still is exact and does not e.g. throw away too-far-away points to
reduce memory consumption.

Regards,
Peter.

*
http://lists.openstreetmap.org/pipermail/graphhopper/2013-April/000057.html



> Yes the demo app is working fine. Basically i want to integrate it in
> my Android app. I want to develop an Android app which gives offline
> navigation. But now i am trying to run the demo code first. And one
> more thing i want to ask there is AStar.java file upload
> at https://github.com/graphhopper/graphhopper/blob/master/src/main/java/com/graphhopper/routing/AStar.java
>
>
> can i use this algorithm for android app offline route planning.?????
>
>
> On Sun, Apr 28, 2013 at 1:22 AM, Peter K <peathal at yahoo.de
> <mailto:peathal at yahoo.de>> wrote:
>
>     Please let me know the error and what you changed to better guide
>     you ...
>
>
>     > Then i took two parts of the code
>
>     You tried to integrate it in your own application? Is the demo app
>     working for you? Try starting from there and iterate ...
>
>>
>>      Now i don't know the implementation of GraphHopperAPI.rout(req)
>>     so how can i figure this out.
>>
>
>     But this is in the source code!?
>
>
>     Regards,
>     Peter.
>
>
>
>>     I am trying to run the code Graphhopper-Android
>>     from https://github.com/graphhopper/graphhopper-android using
>>     berlin-gh graph file available
>>     at https://code.google.com/p/graphhopper/downloads/list 
>>
>>     First i tried to load the .map file and it successfully loaded.
>>     it showed the brelin's map
>>
>>     Then i took two parts of the code 
>>     PrepareGraph()
>>     calcPath()
>>
>>     Prepare graph makes toast "*Finished loading graph. Touch to
>>     route*" thats mean graph loaded successfully. in calcPath()
>>     function App crashed at 
>>
>>      GHResponse resp = hopper.route(req);  while getting response.
>>
>>     where hopper is *GraphHopperAPI hopper*;
>>     and for request i hard coded the lat lon from map.
>
>
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>
>
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