iphone - Persisting a datasource between multiple views without shared root view controller -


i'm working on app uses uinavigationcontroller inside uitabbars. tab bars correspond both uitableviews map view. however, root view controller of app not parent, or direct parent, of uitableview custom controllers , map view controller. have p-list creates nsdictionary objects; datasource using populate entries in tables , map.

so, without root view controller, how should create nsdictionary objects data source? seems me easiest way recreate object in each view controller view needs data. because don't have many views , p-list isn't long, memory shouldn't issue. however, know inefficient.

is there alternative implementation don't have recreate nsdictionary in each view controller?

this tutorial featuring singleton guide neatly explains everything: http://www.cocoanetics.com/2009/05/the-death-of-global-variables/

my worry if multiple view controllers each call singleton, wouldn't generating multiple instances of nsdictionary, , couldn't conceivably still take lot of memory?

in practical terms, data model either placed in kind of singleton (either own, or app delegate kind of singleton).


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