facebook profile image without authentication for iOS

Facebook graph API tells me I can 开发者_如何学JAVAget a profile picture of a user using

http://graph.facebook.com/517267866/picture?type=large

which works fine. However, when you type above URL into a browser, the actual address of the image is

http://profile.ak.fbcdn.net/hprofile-ak-snc4/hs232.ash2/49622_517267866_2709_n.jpg

How can I get the second URL using the first link in iphone sdk. ? I mean using objective C.

Thanks and appreciate the help ..!!!!

You can get the original image URL by going to

https://graph.facebook.com/USER_ID?fields=picture

See an example in the Graph API Explorer: https://developers.facebook.com/tools/explorer/?method=GET&path=me%3Ffields%3Dpicture

This doesn't return the large version of the image though. If you want that, you need to make an FQL query on the User table, and ask for the

pic_big

field.