android - How to know when to update my facebook profile pic from cache? -


in app, caching facebook profile pics in sdcard (for caching) filenames stored url link "http://graph.facebook.com/1146636239/picture" --> this.

whenever download profile image, check in sdcard , pull image.

suppose if friend has changed profile pic, how know download new updated image ? (rather picking sdcard.)

is there api know if profile pic has changed wrt time stamp ?

any insights helpful. thanks


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