Question

How to give a bounce or pop up style animation while adding a subview in iOS?
I need something similar to UIAlertView appearance style. I know there are several methods to do the same: but I prefer to use basic [UIView animateWithDuration: ...]; block here, so may I get some help regarding the transform I should use here to get the pop up effect?

Thanks

Answer 1

Animation for PopUp style :

Swift

    yourView.transform = CGAffineTransform(scaleX: 0.01, y: 0.01)
    UIView.animate(withDuration: 0.2, delay: 0, options: .curveEaseOut, animations: {() -> Void in
        yourView.transform = .identity
    }, completion: {(finished: Bool) -> Void in
        // do something once the animation finishes, put it here
    })

Reverse Animation with hiding the same View

    yourView.transform = .identity
    UIView.animate(withDuration: 0.2, delay: 0, options: .curveEaseOut, animations: {() -> Void in
        yourView.transform = CGAffineTransform(scaleX: 0.01, y: 0.01)
    }, completion: {(finished: Bool) -> Void in
        // do something once the animation finishes, put it here
        yourView.isHidden = true
    })

Objective-C

yourView.transform = CGAffineTransformMakeScale(0.01, 0.01);
[UIView animateWithDuration:0.2 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
    yourView.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished){
    // do something once the animation finishes, put it here
}];

Reverse Animation with hiding the same View

 yourView.transform = CGAffineTransformIdentity;
[UIView animateWithDuration:0.2 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
    yourView.transform = CGAffineTransformMakeScale(0.01, 0.01);
} completion:^(BOOL finished){
    yourView.hidden = YES;
}];