[GraphHopper] Minimal setup for Android?
Nico Nijman
nico.nijman at gmail.com
Mon Jan 5 21:45:24 UTC 2015
Hello,
Please allow me to introduce myself, I am Nico and I would like to create
an Android app that displays a map of a small town and displays markers
that indicate the locations of that days activities. If possible I would
also like to add functionality for finding and displaying the most
efficient route to each of these activities. Unfortunately I am still very
unexperienced in all things related to Android programming.
At present I am a long way from that goal, I created/downloaded and
compiled my map to a folder on my computer called
"C:\temp\graphhopper-0.3\map_son-gh" it contains edges, geometry,
locationIndex, names, nodes and properties files, so I think this step was
successful.
Now I would like to create an app that, if this map_son-gh folder is stored
on the phone, will access it and display the village. To get started I
tried to use the sample code, the app builds, but when i try to start it it
is immediately stopped so apparently there is a fatal error (either code
missing or the files can not be found or are corrupted).
I build the app with Android Studio 1.0, with JRE 1.7.0_71-b14 amd 64 and
the matching JDK and in my project I included graphhopper-0.3-android.jar,
mapsforge-code-0.4.3.jar, mapsforge-map-0.4.3.jar,
mapsforge-map-android-0.4.3.jar and mapsforge-map-reader-0.4.3.jar.
I tried to include "trove-3.0.3.jar" as I read that was also required, but
then the project would no longer build because there were multiple
instances of trove. I assumed this is because trove is nowadays probably
included in the graphhopper jar.
Could you kindly help me:
- by telling me if my includes are correct?
- by telling me if the map files are complete?
- by telling me if and if so where I should store the .map and the .pbf
file on the phone or in the project?
- by telling me where to save the folder with the map data (on the phone or
on the SD card and where)?
- by telling me how I can debug this fatal error (how to get more
information then "the app stopped. <ok>")?
- provide me with the most basic sample code possible (just open the map
and display it, no downloading, no routing, nothing that is not required,
if possible with the map data as resource in the apk instead of somewhere
where i can misplace it).
Thank you for your attention and hopefully for your help.
Kind regards, Nico Nijman
p.s. just in case it matters, this is my map area/the village:
http://www.openstreetmap.org/export#map=15/51.5126/5.4882
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