I’ve developed an android application which track the current position, and draw routing paths, on a specific device, the map suddenly disappear. I checked the console, no errors found, I’m not sure what is the problem, anyone has an idea?
Which map library do you use?
Better ask in their forum (Mapsforge / VTM is
here) posting more details about the implementation.
I did exactly what is explained here
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# Get Demo
[Download GraphHopper Demo APK](../index.md#for-users)
# Set-up Development
As starting point you can use [the demo project](https://github.com/graphhopper/graphhopper/tree/master/android)
which can be used directly from Android Studio and NetBeans via gradle or maven.
Before the installation fetch the source, the OpenStreetMap data and the dependencies:
$ git clone git://github.com/graphhopper/graphhopper.git graphhopper
$ cd graphhopper
$ ./graphhopper.sh import your-area.pbf
## Android Studio
it works fine, but not on the device I want to run the app on.