如何让 UIScrollView 滚动到顶部?
How do I make a UIScrollView scroll to the top?
[self.scrollView setContentOffset:
CGPointMake(0, -self.scrollView.contentInset.top) animated:YES];
[self.scrollView setContentOffset:CGPointZero animated:YES];
或者如果你想保留水平滚动位置并重置垂直位置:
or if you want to preserve the horizontal scroll position and just reset the vertical position:
[self.scrollView setContentOffset:CGPointMake(self.scrollView.contentOffset.x, 0)
animated:YES];
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