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Editorial Team
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Asked: 2026-05-30T14:18:09+00:00

I have a login view with username & password textfields and two buttons for

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I have a login view with username & password textfields and two buttons for “sign in” and “create new account”. Currently, I have it so that if the user clicks the “create new account” button, it loads a new view with the same controls, except the “sign in” button is removed and a “confirm password” text field is added. Is is possible to add/remove these controls to the same view instead of loading a new view? If so, is it possible to animate this as well?

Thanks so much in advance for your wisdom!

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1 Answer

  1. Editorial Team

    You could try a simple UIView animation. I don’t think you can animate addSubview: or removeFromSuperview: but you can animate changes in alpha:

    // add confirmPasswordButton to the view, alpha=0 (invisible)
[confirmPasswordButton setAlpha:0.0];
[self.view addSubview:confirmPasswordButton];

[UIView beginAnimations:@"switchButtons" context:NULL];
[UIView setAnimationDuration:1.0];
[confirmPasswordButton setAlpha:1.0];
[signinButton setAlpha:0.0];
[UIView commitAnimations];

    Those are the basics. Check out Apple’s docs for more details on callbacks, using blocks, more animation parameters, etc:
    https://developer.apple.com/library/ios/#documentation/WindowsViews/Conceptual/ViewPG_iPhoneOS/AnimatingViews/AnimatingViews.html#//apple_ref/doc/uid/TP40009503-CH6-SW1

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