弯曲滚动问题 - 希望是简单的问题
您好，我在 Flex 中滚动时遇到问题。我正在使用带有许多标签对象的大画布。很多标签都是在屏幕外的，直到用户向下或向上滚动，这是不可避免的，因为必须显示的信息量很大，所以我考虑了替代方案，以防有人想到任何替代方案。但发生的情况是，当我滚动离开画布上的相应区域时，画布似乎会剪掉其标签。
例如，当我运行应用程序时，所有内容都在容器顶部完美可见，然后当我向下滚动画布并滚动回顶部时，内容消失了。我真的对此感到困惑，所以如果有人能解释为什么会发生这种情况或者是否有解决方法，我将不胜感激。我想象 Flex 正在尝试做一些复杂的事情，比如回收像素并实时渲染或类似的事情，但我真的不需要那样。该应用程序只是一个显示器，因此它不是交互式的，并且仅包含标签和一些滑块来表示数据。
有人有什么建议吗？
谢谢， 康纳
Hi I am having an issue with scrolling in flex. I am using a large canvas with a number of label objects. A lot of the labels are off-screen until the user scrolls down or up, this is unavoidable due to the amount of information that has to be displayed so I have considered alternatives to this in case anyone is thinking of any. What is happening though is that the canvas seems to clip its labels when I scroll away from the respective areas on the canvas.
E.g. As I run the app all the content is visible perfectly at the top of the container, then as I scroll down the canvas and scroll back to the top, the content has disappeared. I am genuinely stumped on this so I would appreciate if anyone could explain why this is happening or if there is a way around it. I would imagine that Flex is trying to do something sophisticated like recycle pixels and render in real time or something like that, but I really don't need that. The app is simply just a display so it is not interactive and will simply only contain labels and a few sliders to represent data.
Does anyone have any suggestions?
Thanks,
Conor
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我在 TileList 上看到了消失的图像，并找到了解决方案 此处。您可能正在使用嵌入图像或画布显示对象的图像副本？我知道tileList使用项目渲染器池，这就是它出现问题的原因，但Canvas的情况并非如此。
(putting this as an Answer rather than a Comment so I can put in the link)
Ive seen dissappearing images on a TileList and found a solution here. It might be that you are using the embedded images, or a copy of an image for the canvas display objects? I know that the tileList uses a pool of item renderers and thats why it was problematic, but that is not the case for a Canvas,.