从UIScrollView中删除子视图

Question

我想删除不再需要的currencyViews（tableViews）。我可以动态地改变它们，如果我有6个currencyViews，现在是4个，那么2个（未显示）仍然存在。我怎么能删除它们？

  - (void)loadScrollViewWithPage:(int)page {


        if (page < 0) return;
        if (page >=  numberOfCurrencyViews) return;

        // replace the placeholder if necessary

        CurrencyViewController *controller = [self.currencyControllers objectAtIndex:page];

        if ((NSNull *)controller == [NSNull null]) {

            controller = [[CurrencyViewController alloc] initWithPageNumber:page];

            controller.delegate = self;

            [self.currencyControllers replaceObjectAtIndex:page withObject:controller];

            [controller release];
        }

        // add the controller's view to the scroll view
        if (nil == controller.view.superview)
         {
            CGRect frame = scrollView.frame;
            frame.origin.x = frame.size.width * page;
            frame.origin.y = 0;
            controller.view.frame = frame;
            [scrollView addSubview:controller.view];
         }    


    }

Answer 1

您可以使用以下内容删除视图中的子视图：

[controller.view removeFromSuperview];

Answer 2

[myScrollView.subviews makeObjectsPerformSelector：@selector（removeFromSuperview）];