ios4 - iPhone login screen problem -

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i have large application. has lot of tables , navigation between them. started project 'navigationbasedproject' (xcode template). need add login @ start of application. here did far: in 'didfinishlaunchingwithoptions' added:

loginviewcontroller = [[loginviewcontroller alloc]init];         [loginviewcontroller.view setframe:cgrectmake(0, 0, 320, 480)];         [self.window.rootviewcontroller presentmodalviewcontroller:loginviewcontroller animated:no];

when user data valid dismiss login screen this:

[self.loginviewcontroller dismissmodalviewcontrolleranimated:yes];

user can logout application. , present login screen again this:

[self.window.rootviewcontroller presentmodalviewcontroller:loginviewcontroller animated:no];

and works. text fields on login screen still filled data user enter login. , afraid have memory issue here. how remove login screen memory when user logs in. don't use gui designer connect code. wonder idea make login screen , modal view?

you should use.... (i don't know why declaring loginviewcontroller @ class level)

loginviewcontroller *loginviewcontroller = [[loginviewcontroller alloc]init];             [loginviewcontroller.view setframe:cgrectmake(0, 0, 320, 480)];             [self.window.rootviewcontroller presentmodalviewcontroller:loginviewcontroller animated:no];     [loginviewcontroller release];

and dismissal .....

[self.window.rootviewcontroller dismissmodalviewcontrolleranimated:yes];

thanks,


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