How to retrieve large profile picture in Facebook?

I am using this url to retrieve Facebook profile picture.

http://grap开发者_Go百科h.facebook.com/"+ Id +"/picture?=large"

The thing is, its still small. Its not showing up large. How would I get the large image to show up?

http://graph.facebook.com/1222530914/picture?type=large

You need ?type=

it is listed in the facebook graph api under user

use this:

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

You can also do this as a regular API request using the new API "field expansion" syntax.

Like so:

https://graph.facebook.com/____OBJECT_ID____?fields=picture.type(large)