ios - What's Apple's Guideline on when to use modal vs pushed view controller? -


apple's guideline on when use modal vs pushed view controller upon tapping table view cell seems confusing.

take settings->twitter example. if tap add account cell, view pushed in sign in. if click on existing account, modal view shown instead. in other places in settings, pushed view used instead. in contacts' edit mode, modal used instead. can't find common pattern on when use which.

what's apple's guideline on when use modal vs pushed view controller when tapping table view cell?


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