0
我使用scrollview和pagecontrol渲染几个图像,非常类似于内置的照片应用程序。在运行时从UIScrollView/PageControl中删除视图/控制器
NSMutableArray *controllers = [[NSMutableArray alloc] init];
for (unsigned i = 0; i < [photos count]; i++) {
[controllers addObject:[NSNull null]];
}
self.viewControllers = controllers;
[controllers release];
scrollArea.pagingEnabled = YES;
scrollArea.contentSize = CGSizeMake(newW * [photos count], newH);
scrollArea.showsHorizontalScrollIndicator = NO;
scrollArea.showsVerticalScrollIndicator = NO;
scrollArea.scrollsToTop = NO;
scrollArea.delegate = self;
pageControl.numberOfPages = [photos count];
东西方妇女网络和newH只是两个变量,我使用跟踪大小时方向发生变化的:当视图加载我使用这个代码来设置控制器。 我loadScrollViewWithPage方法:
- (void) loadScrollViewWithPage:(int)page {
if (page < 0) return;
if (page >= [photos count]) return;
PhotoViewController *controller = [viewControllers objectAtIndex:page];
if ((NSNull *)controller == [NSNull null]) {
controller = [[PhotoViewController alloc] init];
controller.imgPath = (NSString *)[photos objectAtIndex:page];
[viewControllers replaceObjectAtIndex:page withObject:controller];
[controller release];
}
if (nil == controller.view.superview) {
CGRect frame = scrollArea.frame;
frame.origin.x = frame.size.width * page;
frame.origin.y = 0;
controller.view.frame = frame;
[scrollArea addSubview:controller.view];
}
}
这里是我的问题。我需要卸载控制器/视图。我以为我可以使用这样的:
for (unsigned i = 0; i < [photos count]; i++) {
[self.viewControllers replaceObjectAtIndex:i withObject:[NSNull null]];
}
我想这样做,所以加载全新的意见纳入了滚动。
我也试过一些liek这个没有运气:
for(UIView *subview in [self.scrollArea subviews]) {
[subview removeFromSuperview];
}
任何想法?