Hello, I would like to use the file gps-example that I found in http://wiki.processing.org/w/Android. In that file, there are : import android.content.Context; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; And i have the error message : No library found for android.content No library found for android.location No library found for android.location No library found for android.location I am sure i have install android correctly with SDK manager and I have tried a lot of differents solutions but I always have mistakes. I dont understand. Have I find the real android library ?? Where do i have to install them ?? Could you help me please ? In fact I don't find in http://wiki.processing.org/w/Android, how to do. Thank you Help me it's very important for me. Thank's a lot