thuyBox

You might want to try instantiating a BOXContentClient with: + (BOXContentClient *)clientForServerAuthUser:(nonnull ServerAuthUser *)serverAuthUser initialToken:(nullable NSString *)token fetchTokenBlockInfo:(nullable NSDictionary *)fetchTokenBlockInfo fetchTokenBlock:(nonnull ServerAuthFetchTokenBlock)fetchTokenBlock; and have your logic in fetchTokenBlock. Looks like...

You might be interested in https://github.com/box/box-ios-sdk/blob/master/doc/BoxPlatform.md

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