How does the Facebook "profile" access request provide age information? -

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i looking facebook docs on permission arrays, , understand in order obtain user's birthday information must explicitly requested via user_birthday. however, noticed app such 1 screencapped below not ask birthday information, vaguely asks "profile", , yet able obtain exact birthday in age (not age range). wondering how still accomplished? thanks!

enter image description here

note translates following:

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@daspianist,

i've put sample (based on fb's graph api sample app) app git at: https://github.com/brewmium/facebook-ios-graphexplorerqueryrunner.git

you can ask permissions 1 one, on ios device, , run complex graph api queries generated from: https://developers.facebook.com/tools/explorer

i wrote (heavily modified) because output web based explorer queries return different results when run on ios sdk.

while @ it, wrote little permissions request interface, it's easy modify permissions testing queries (like on web version).

when removing permissions, it's best go facebook account settings / apps , remove graphapisample list of apps permissions, ask fresh permissions.

good luck,

-eric

followup: @daspianist, sample query runner uses "twitch out facebook" login, see of permissions, vs. dialog screen captured... "simplifying things"... here tinder trying login, , asking birthdate. call bug, not ability circumvent permissions scheme. hope helps. -eric

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