I found the following note in The Google Places API (Developer Preview) http://code.google.com/apis/maps/documentation/places/#PlaceDetailsRequests
Note: To use the Google Places API you must first request a Maps API client ID and cryptographic key which you must use to sign your request URLs. For information on signing URL requests, please see the URL Authentication documentation within the Web Service APIs home page. But followed the instruction, I still do not know how to get the Maps API client ID and cryptographic key. Could someone help? Thanks -- 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