use the compass heading and compare it with the bearing from your current location to the building. Here's the formula in Objective-C but you shouldn't have problems to convert this to Java
//spherical bearing between two coordinates - (CGFloat) sphericalBearingFromLat1:(CGFloat)lat1 Lon1:(CGFloat)lon1 toLat2:(CGFloat)lat2 Lon2:(CGFloat)lon2 { lat1 *= 0.0174533; lat2 *= 0.0174533; float dLon = (lon2-lon1) * 0.0174533; float brng = 57.29578 * atan2(sin(dLon) * cos(lat2), cos(lat1) * sin(lat2) - sin(lat1) * cos(lat2) * cos(dLon)); if(brng <= 0.0f) brng += 360.0f; return brng; } -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en