我有一个UIScrollView加载三个不同的页面.当我放大页面,并缩小到原始大小时,应用程序停止让我在页面之间滚动,就像分页被禁用.当缩小到原始大小时,我该怎么做才能重新启用分页(Scale == 1)？
这是我的代码
这是我的代码
- (void)viewDidLoad
{
[ScView setMaximumZoomScale : 2.0f];
[ScView setMinimumZoomScale : 1.0f];
ScView.contentSize = CGSizeMake(1024*3,1.0);
ScView.pagingEnabled = YES;
ScView.clipsToBounds = YES;
ScView.delegate = self;
ScView.showsHorizontalScrollIndicator = NO;
ScView.showsVerticalScrollIndicator = NO;
[super viewDidLoad];
[self returnImages];
}
-(void)returnImages{
for (pageNumber = 1; pageNumber <= 3; pageNumber++) {
imagen = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png",pageNumber]]];
imagen.frame = CGRectMake((pageNumber-1)*1024,1024,768);
[ScView addSubview:imagen];
}
}
//
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
return ScView;
// return [imagen initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png",pageNumber]]];
}
- (void)scrollViewWillBeginZooming:(UIScrollView *)myScrollView withView:(UIView *)view
{
NSLog(@"Scroll Will Begin");
ScView.scrollEnabled = YES;
}
- (void)scrollViewDidEndZooming:(UIScrollView *)myScrollView withView:(UIView *)view atScale:(float)scale
{
if(scale == 1)
{
ScView.scrollEnabled = YES;
ScView.pagingEnabled = YES;
[self returnImages];
NSLog(@"Scrolol will end");
//ScView.maximumZoomScale = 2.0f;
// [super viewDidLoad];
[self returnImages];
}
}
任何想法将受到高度赞赏..
解决方法
要获得正确的分页和缩放,您必须将每个页面的UIScrollView嵌入到父UIScrollView中.此组合允许您同时使用分页和内部滚动.
下面是UIViewController的示例,其中包含父滚动视图和三个嵌入的可缩放页面.
#define VIEW_FOR_ZOOM_TAG (1)
@implementation SVViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIScrollView *mainScrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
mainScrollView.pagingEnabled = YES;
mainScrollView.showsHorizontalScrollIndicator = NO;
mainScrollView.showsVerticalScrollIndicator = NO;
CGRect innerScrollFrame = mainScrollView.bounds;
for (NSInteger i = 0; i < 3; i++) {
UIImageView *imageForZooming = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"page%d",i + 1]]];
imageForZooming.tag = VIEW_FOR_ZOOM_TAG;
UIScrollView *pageScrollView = [[UIScrollView alloc] initWithFrame:innerScrollFrame];
pageScrollView.minimumZoomScale = 1.0f;
pageScrollView.maximumZoomScale = 2.0f;
pageScrollView.zoomScale = 1.0f;
pageScrollView.contentSize = imageForZooming.bounds.size;
pageScrollView.delegate = self;
pageScrollView.showsHorizontalScrollIndicator = NO;
pageScrollView.showsVerticalScrollIndicator = NO;
[pageScrollView addSubview:imageForZooming];
[mainScrollView addSubview:pageScrollView];
if (i < 2) {
innerScrollFrame.origin.x += innerScrollFrame.size.width;
}
}
mainScrollView.contentSize = CGSizeMake(innerScrollFrame.origin.x + innerScrollFrame.size.width,mainScrollView.bounds.size.height);
[self.view addSubview:mainScrollView];
}
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return [scrollView viewWithTag:VIEW_FOR_ZOOM_TAG];
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskPortrait;
}
- (BOOL)shouldAutorotate {
return NO;
}
@end
