UIView动画在设备上滞后 [英] UIView animation lags on device

问题描述

我在我的应用程序中使用动画并感到困惑，因为动画滞后于设备，在模拟器上一切正常.首先，我尝试使用

I'm using animation in my app and get confused, because animation is lagging on device, on simulator everything seems OK. First I tried to use

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.3];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];

在提交动画之前，大约有30行带有"if"块的代码，所以我认为这可能会导致问题，但是随后我开始使用

And before commit animation there were something like ~30 lines of code with "if" blocks so I thought this might cause the problem, but then I start to use

[UIView animateWithDuration:0.3
                                  delay:0.0
                                options: UIViewAnimationCurveEaseIn
                             animations:^{
                                 mainView.frame = CGRectMake(0, 0, 320, 420);
                                 buttonsView.transform = CGAffineTransformMakeTranslation(0, 68);
                                 radioBar.transform = CGAffineTransformMakeTranslation(0, -50);
                                 vk_controller.view.frame = CGRectMake(0, 0, 320, 440);
                             } 
                             completion:^(BOOL finished){
                                 button.isHiddenDown = YES;
                             }];

以"if"为单位，但滞后似乎仍然存在.当我按下按钮时，会有〜0.5-1秒的延迟(为什么?)，然后动画开始.但是当我在表格视图中

in terms of "if" blocks, but lags seems to stay. When I press button there is delay ~0.5-1 sec (why?) and then animation starts. But when I'm on table view

[UIView animateWithDuration:0.3
                                  delay:0.0
                                options: UIViewAnimationCurveEaseIn
                             animations:^{
                                 mainView.frame = CGRectMake(0, 0, 320, 420);
                                 buttonsView.transform = CGAffineTransformMakeTranslation(0, 68);
                                 radioBar.transform = CGAffineTransformMakeTranslation(0, -50);
                                 goha_news_controller.view.frame = CGRectMake(0, 0, 320, 420);
                                 goha_news_controller.feed_table.frame = CGRectMake(0, 0, 320, 420);
                                 if(goha_news_controller.backgroundView)
                                 {
                                     goha_news_controller.backgroundView.frame = CGRectMake(0, 0, 320, 420);
                                     goha_news_controller.newsDetailView.frame = CGRectMake(0, 0, 320, 420);
                                 }

                             } 
                             completion:^(BOOL finished){
                                 button.isHiddenDown = YES;
                             }];

除了动画出现意外延迟之外，还有带有突发性的刺耳动画.
谁能解释为什么会发生以及如何解决?

in addition to the unexpected delay before the animation, there is harshness animation with bursts.
Can anyone explain why does it happen and how can I fix it?

推荐答案

另一个可能的原因.您是否在任何屏幕视图或图层中使用阴影? iOS根本无法很好地处理阴影动画.

Another possible cause. Are you using shadows in any of the on-screen views or layers? iOS does not handle animating with shadows very well at all.

这篇关于UIView动画在设备上滞后的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！