使用UIAlertVIew添加子视图,如动画,具有弹跳效果

Question

如何在iOS中添加子视图时提供反弹或弹出式动画？我需要类似于UIAlertView外观风格的东西.我知道有几种方法可以做同样的事情:但我更喜欢在[UIView animateWithDuration: ...];这里使用基本块,所以我可以得到一些关于transform我应该在这里使用以获得弹出效果的帮助吗？

谢谢

Answer 1

Animation 对于PopUp风格:

迅速

    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与hiding该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的

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与hiding该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;
}];