xcode iOS 动画视图包括子视图
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iOS animating a view including subviews
提问by toppless
I'm trying to make an animation for collapsing a view which includes some subviews.
我正在尝试制作一个用于折叠包含一些子视图的视图的动画。
[UIView beginAnimations:@"advancedAnimations" context:nil];
[UIView setAnimationDuration:3.0];
CGRect aFrame = aView.frame;
aView.size.height = 0;
aView.frame = aFrame;
[UIView commitAnimations];
This animation is doing fine, but for the aView only. Subviews doesn't collapse as expected. How do I make the subviews collapsing as well? Furthermore, is there a way to recalculate original size after collapsing?
这个动画效果很好，但仅适用于 aView。子视图没有按预期折叠。如何使子视图也折叠？此外，有没有办法在折叠后重新计算原始大小？
THX
谢谢
采纳答案by Zoleas
You have probably forgotten to apply some autoresizing mask to your subviews. If you do
您可能忘记对子视图应用一些自动调整大小的掩码。如果你这样做
for (UIView *subview in aView.subviews) {
subview.autoresizingMask = (UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleTopMargin);
}
it should work.
它应该工作。
BUT, personally I would use, as lamelas said
但是，我个人会使用，正如lamelas所说
aView.transform = CGAffineTransformMakeScale(1.0,0.0);
回答by lamelas
Try using this to animate:
尝试使用它来制作动画：
aView.transform = CGAffineTransformMakeScale(1.0,0.0);
回答by Caleb
An educated guess:
有根据的猜测：
[UIView beginAnimations:@"advancedAnimations" context:nil];
[UIView setAnimationDuration:3.0];
CGRect aFrame = aView.frame;
aView.size.height = 0;
aView.frame = aFrame;
for (UIView *subview in aView.subviews) {
CGRect frame = subview.frame;
frame.size.height = 0;
subview.frame = frame;
}
[UIView commitAnimations];
Furthermore, is there a way to recalculate original size after collapsing?
此外，有没有办法在折叠后重新计算原始大小？
You'll probably want to just save the height before collapsing.
您可能只想在折叠之前保存高度。
