objective c - iPhone app login issue -

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i have iphone application i'm working on , far have created login page application such phone's user can access application. login works fine , application works fine, when hit home button, app "minimized". , if accessed again task switcher doesn't prompt password.

what best way go getting app request password. if helps use navigation controllers , have 1 view dedicated login.

thanks help.

can't check app activated in appdelegate?

- (void)applicationdidbecomeactive:(uiapplication *)application {     [self showloginwindow]; }

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