ios 在 iOS4+ 中显式禁用 UIView 动画
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Explicitly disabling UIView animation in iOS4+
提问by P i
I have been reading that Apple recommends to use block-based animations instead of CATransaction
我一直在读到 Apple 建议使用基于块的动画而不是 CATransaction
Before, I was using this code to disable animations:
之前，我使用此代码禁用动画：
[CATransaction begin];
[CATransaction setDisableActions: YES];
// !!! resize
[CATransaction commit];
Is there a new recommended method to do this, or is this still okay?
是否有新的推荐方法来执行此操作，或者这仍然可以吗？
回答by Joshua Weinberg
[UIView setAnimationsEnabled:NO];
//animate here
[UIView setAnimationsEnabled:YES];
回答by Brentley Jones
For iOS 7 and above this can now be accomplished with:
对于 iOS 7 及更高版本，现在可以通过以下方式完成：
[UIView performWithoutAnimation:^{
// Changes we don't want animated here
view.alpha = 0.0;
}];
回答by Maverick
Swift 3+
斯威夫特 3+
UIView.performWithoutAnimation {
// Update UI that you don't want to animate
}
回答by Jacob Foshee
For MonoTouch (C#) users, here is a helper class:
对于 MonoTouch (C#) 用户，这里是一个帮助类：
public class UIViewAnimations : IDisposable
{
public UIViewAnimations(bool enabled)
{
_wasEnabled = UIView.AnimationsEnabled;
UIView.AnimationsEnabled = enabled;
}
public void Dispose()
{
UIView.AnimationsEnabled = _wasEnabled;
}
bool _wasEnabled;
}
Example:
例子：
using (new UIViewAnimations(false))
imageView.Frame = GetImageFrame();
回答by Michael
// Disable animations
UIView.setAnimationsEnabled(false)
// ...
// VIEW CODE YOU DON'T WANT TO ANIMATE HERE
// ...
// Force view(s) to layout
yourView(s).layoutIfNeeded()
// Enable animations
UIView.setAnimationsEnabled(true)
