【UIKit-93-2】#import <UIKit/UIScrollView.h>

#import <UIKit/UIScrollView.h>

@protocol UIScrollViewDelegate<NSObject>

@optional

【滚动】

- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView;
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity
targetContentOffset:(inout
CGPoint *)targetContentOffset;
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
NSLog(@"将要开始拖动（有延迟）");

}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{

NSLog(@"滚动就调用");
}

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset{
NSLog(@"将要结束拖动");

}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
NSLog(@"结束拖动");

}

【减速】

- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView;
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;

- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
NSLog(@"开始减速");

}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
NSLog(@"结束减速");

}

【缩放】

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView;
- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView
*)view;
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView
*)view atScale:(CGFloat)scale;

- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2);

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
//支持放大的contentView
return imgView1;

}

- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view{
NSLog(@"将要变化");

}

- (void)scrollViewDidZoom:(UIScrollView *)scrollView{
NSLog(@"变化就调用");

}

- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale{
NSLog(@"结束变化");

}

【滚到顶部】

- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView;
// return a yes if you want to scroll to the top. if not defined, assumes YES

- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView;
// called when scrolling animation finished. may be called immediately if already at top

- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{
//点击状态栏，滚到顶部
return YES;
}

- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{
NSLog(@"滚动顶部结束时");

};

【有关动画】

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView;

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{
NSLog(@"animation  相关的 动画结束时。");

}

@end

- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2); //
any zoom scale changes

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView; //
called when setContentOffset/scrollRectVisible:animated: finishes. not called if not animating

- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2); //
any zoom scale changes