UIScrollView在滚动时重绘内容？ [英] UIScrollView redrawing content while scrolling?

问题描述

我知道有一个属性或方法可以在滚动时使scrollview / uiview调用drawRect：方法。由于性能原因，默认情况下禁用此功能，但我需要启用它。
我不记得该方法的名称，因此我找不到它，任何知道我要寻找的人吗？

I know there is a property or method that makes the scrollview/uiview call drawRect: method while is scrolling. By default is disabled because of performance reasons but I need to enable it. I cannot remember the name of the method hence I cannot look for it, anyone who knows what I am looking for?

预先感谢

推荐答案

我建议使用scrollViewDidScroll：-method，然后重绘视图。

I'ld suggest to use the scrollViewDidScroll:-method and then redraw the view.

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    [someView setNeedsDisplay];
}

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