从UIScrollView中移除子视图

Question

我需要从ScrollView中删除图像subviews，我尝试从subviews的array中删除，但那是一个不可变的NSArray。

如何从scrollviews array的subviews中删除subview？

- some_id

Answer 1

    NSArray *viewsToRemove = [scrollView subviews];
    for (UIView *v in viewsToRemove) [v removeFromSuperview];

- bioffe

---

这样做还会删除滚动指示器... 看来我们必须检查要删除的视图类型。 - Tim Autin

Answer 2

你可以这样做，

[[scrollView subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];

- EmptyStack

Answer 3

这段代码会删除UIScrollView的所有子视图，但保留其滚动指示器：

_scrollView.showsHorizontalScrollIndicator =
_scrollView.showsVerticalScrollIndicator = NO;
[_scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
_scrollView.showsHorizontalScrollIndicator =
_scrollView.showsVerticalScrollIndicator = YES;

- Duc Jim

---

显然，[_scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];将删除所有UIScrollView子视图，包括其滚动指示器。在从scrollview中删除所有子视图之前隐藏滚动指示器将确保不会从scrollview中删除滚动指示器。 - calinb

Answer 4

for (UIView *v in [scrollView subviews]) {
    [v removeFromSuperview];       
}

- Roozbeh Zabihollahi

Answer 5

在子视图上调用-removeFromSuperview。

- Simon Goldeen

Answer 6

Swift

for subview in scrollView.subviews {
    subview.removeFromSuperview()
}

- zombie