android - Re Ask for remaining permissions on authenticate Facebook user -

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i integrate facebook app on android , request login "public_profile,email,user_friends,user_photos" permissions first time. when login restrict email permission. when i'm going authenticate second time saying "you have authorized app". whereas should ask remaining permissions again. if in future need email permission how can permit it.is there way it.

here screen

edit permission screen

thanks,

once user has declined permission, app can not ask again same way – need explicitly re-ask it, passing parameter auth_type=rerequest in login dialog call.

https://developers.facebook.com/docs/facebook-login/permissions/requesting-and-revoking#handling


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