IOS UIScrollView常用代理方法

iOS UIScrollView代理方法有很多，从头文件中找出来学习一下

//只要滚动了就会触发

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

{

//    NSLog(@" scrollViewDidScroll");

NSLog(@"ContentOffset  x is  %f,yis %f",scrollView.contentOffset.x,scrollView.contentOffset.y);

}

//开始拖拽视图

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

{

NSLog(@"scrollViewWillBeginDragging");

}

//完成拖拽

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;

{

NSLog(@"scrollViewDidEndDragging");

}

//将开始降速时

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

{

NSLog(@"scrollViewWillBeginDecelerating");

}

//减速停止了时执行，手触摸时执行执行

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

{

NSLog(@"scrollViewDidEndDecelerating");

}

//滚动动画停止时执行,代码改变时出发,也就是setContentOffset改变时

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

{

NSLog(@"scrollViewDidEndScrollingAnimation");

}

//设置放大缩小的视图，要是uiscrollview的subview

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView;

{

NSLog(@"viewForZoomingInScrollView");

return viewA;

}

//完成放大缩小时调用

- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale;

{

viewA.frame=CGRectMake(50,0, 100, 400);

NSLog(@"scale between minimum and maximum. called after any 'bounce' animations");

}// scale between minimum and maximum. called after any 'bounce' animations

//如果你不是完全滚动到滚轴视图的顶部，你可以轻点状态栏，那个可视的滚轴视图会一直滚动到顶部，那是默认行为，你可以通过该方法返回NO来关闭它

- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView;

{

NSLog(@"scrollViewShouldScrollToTop");

return YES;

}

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

{

NSLog(@"scrollViewDidScrollToTop");

}