problem installing android_core [closed]

edit

I ve been following http://wiki.ros.org/android/Tutorials... .

after completing the rosjava tutorials i tried to install ros_android_core, since i am triing to build an app for my tablet.

when doing

wstool init -j4 ~/android/src https://raw.github.com/rosjava/rosjava/hydro/android_core.rosinstall

i get the error

Using initial elements from: https://raw.github.com/rosjava/rosjava/hydro/android_core.rosinstall
ERROR in config: Unable to download URL [https://raw.github.com/rosjava/rosjava/hydro/android_core.rosinstall]: <urlopen error [Errno -2] Name or service not known>

can someone help me

Thanks

Stefan