如何等待动画完成? [英] How to wait untill a animation is finished?

问题描述

嗨 我有一个名为fadeTo()的函数，该函数可更改动画的不透明度.我想知道如何等待fadeTo中的情节提要和动画完成，然后继续执行我的程序的其余部分.

例如，如果我按下按钮，我希望image1淡出然后制作新图像.但是发生的事情是它只是在淡入时间之前制作了一个新图像，所以不会有任何效果:

Hi i have a function called fadeTo() which changes an opacity with an animation. i want to know how can i wait until the storyboard and animation in fadeTo are finished then continue the rest of my program.

for example if i hit on button i want image1 to fade out and then make a new image. but what happens is it just makes a new image before the fade time so there will be no effect:

private void button_Click(object sender, RoutedEventArgs e)
{
    //fadeTo(Control, OpacityToFade, Duration);
    fadeTo(image1, 0.0, 500);
    
    //I want the program to wait here till the fade finishes but i dont know how to?
    image1 = new Image();
    .
    .
    .
}

我该怎么办?

感谢

How can i do it?

thanks

推荐答案

对于动画完成后的执行任务，可以使用如果您没有动画类，但是具有动画的持续时间(例如您的情况)，则可以使用

If you don''t have the animation class but you have the duration of the animation (like in your case), you can use a Timer with that duration.

我不建议在这里使用Thread.Sleep方法，因为我们不想阻止UI ...

I don''t suggest to use the Thread.Sleep method here, because we don''t want to block the UI...

除了我的第一个解决方案外，我还记得两个月前我已经发布了解决此问题的技巧(我怎么会忘记它呢……:)).

In addition to my first solution, I just remembered that I''ve already posted a tip for solving this issue, two months ago (How could I forget it... :) ).

您可以尝试使用我的 SuspendedButton .在BeforeClick事件处理程序中，启动动画，然后在Click事件处理程序中，执行动画完成后必须完成的任务.

You can try to use my SuspendedButton. In the BeforeClick event-handler, start the animation and, in the Click event-handler, perform the task that has to be done after the animation is finished.

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