ios - How to present a setup screen from my app delegate? -


i have first time setup screen wish present on first time run of application. have tab bar controller 5 tabs , independent view controller appear on initial run. after clicking uibutton on setup screen, has return tab bar navigation first tab being shown. far in app delegate have this:

// override point customization after application launch.  [[nsuserdefaults standarduserdefaults] setbool:yes forkey:@"first time"]; [[nsuserdefaults standarduserdefaults] synchronize];  if([[nsuserdefaults standarduserdefaults] boolforkey:@"first time"] == yes) {     [[nsuserdefaults standarduserdefaults] setbool:no forkey:@"first time"];     [[nsuserdefaults standarduserdefaults] synchronize];       sssetupscreenviewcontroller *setupcontroller = [[sssetupscreenviewcontroller alloc] init];     [(uinavigationcontroller *)self.window.rootviewcontroller pushviewcontroller:setupcontroller animated:no];

however, brings black screen every time app launched. simple missing, awesome.

you cannot set yes in beginning since second run.

how following?:

// override point customization after application launch.  if([[nsuserdefaults standarduserdefaults] objectforkey:@"first time"] == nil) {     [[nsuserdefaults standarduserdefaults] setbool:no forkey:@"first time"];     [[nsuserdefaults standarduserdefaults] synchronize];       sssetupscreenviewcontroller *setupcontroller = [[sssetupscreenviewcontroller alloc] init];     [(uinavigationcontroller *)self.window.rootviewcontroller pushviewcontroller:setupcontroller animated:no];

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