UIScrollview 停留在不正确的 contentOffset(-20 px，不是 0px) [英] UIScrollview resting at incorrect contentOffset (-20 px, not 0px)

问题描述

我有一个在 y 轴上展开并调用此委托方法的 UIScrollview:

I have a UIScrollview that expands in the y-axis and calls this delegate method:

-(void)scrollViewDidScroll:(UIScrollView *)scrollView {

    float yOff = scrollView.contentOffset.y;
    NSLog(@"y off is %f", yOff);
}

当 scrollView 移到顶部时(即 yOff == 0)，它实际上在大多数手机上停留在 -20px 和 iPhoneX 上的 -44px.如何关闭这种行为，这样做有什么风险?

As the scrollView is moved to the top (ie. yOff == 0), it actually comes to rest at -20px on most phones and -44px on the iPhoneX. How do I switch this behaviour off, and what are the risks of doing so?

推荐答案

尝试将 UIScrollView 上的 contentInsetAdjustmentBehavior 设置为 .never

Try setting contentInsetAdjustmentBehavior on your UIScrollView to .never

if (@available(iOS 11.0, *)) {
    scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}

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