如何在uiscrollview滚动时添加声音

-(void)layoutScrollImages { UIImageView *view = nil; NSArray *subviews = [scrollView1 subviews]; CGFloat curXLoc = 0; for (view in subviews) {if ([view isKindOfClass:[UIImageView class]] && view.tag > 0) { CGRect frame = view.frame; frame.origin = CGPointMake(curXLoc, 0); view.frame = frame; curXLoc += (kScrollObjWidth); } } [scrollView1 setContentSize:CGSizeMake((kNumImages * kScrollObjWidth), [scrollView1 bounds].size.height)]; } -(void)viewDidLoad { self.view.backgroundColor = [UIColor clearColor]; [scrollView1 setBackgroundColor:[UIColor whiteColor]]; [scrollView1 setCanCancelContentTouches:NO]; scrollView1.indicatorStyle = UIScrollViewIndicatorStyleWhite; scrollView1.clipsToBounds = YES; scrollView1.scrollEnabled = YES; scrollView1.pagingEnabled = YES; NSUInteger i; for (i = 1; i <= kNumImages; i++) { NSString *imageName = [NSString stringWithFormat:@"snap%d.jpg", i]; UIImage *image = [UIImage imageNamed:imageName]; UIImageView *imageView = [[UIImageView alloc] initWithImage:image]; CGRect rect = imageView.frame; rect.size.height = kScrollObjHeight; rect.size.width = kScrollObjWidth; imageView.frame = rect;imageView.tag = i; [scrollView1 addSubview:imageView]; [imageView release]; [self layoutScrollImages]; } [super viewDidLoad]; } 

Answer 1

添加UIScrollViewDelegate到你的界面，然后执行你的任务

 scrollViewWillBeginDragging or `scrollViewDidEndDragging` - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView // called on start of dragging (may require some time and or distance to move) { //add your code here } 

现在只要您拖动滚动视图就会调用这个方法