我有一个包含UIScrollView插座的UIView。
我想检测视图滚动的时间。
这是我的代码:
// interface
@interface MyView : UIView <UIScrollViewDelegate>
@property (strong, nonatomic) IBOutlet UIScrollView *scrollView;
-(void)setup;
// implementation
@implementation MyView
@synthesize scrollView;
-(void)setup {
scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 150, 160)];
scrollView.pagingEnabled = true;
[scrollView setContentSize:CGSizeMake(30, 160)];
scrollView.showsHorizontalScrollIndicator = false;
scrollView.bounces = false;
scrollView.scrollEnabled = true;
[self addSubview:scrollView];
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
NSLog(@"Point: %@", NSStringFromCGPoint(scrollView.contentOffset));
}
我错过了什么?我是否需要修改故事板以激活“scrollViewDidScroll”?我可以通过编程方式执行此操作吗?
答案 0 :(得分:3)
您需要在设置期间设置scrollView的委托:
self.scrollView.delegate = self