IOS--常用控件--UIScrollView

scrollView每次停止时执行的代理方法:

一、手动导致scrollView的滑动时:

1.手滑一下scrollView,然后松开,scrollView自己慢慢停止,执行的方法:

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{　　

　　//OK,真正停止了，do something

}

2.手一直在scrollView上按着,受控制着scrollView最后停止,执行的方法:

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

{

if(!decelerate)

{ //OK,真正停止了，do something}

}

二、通过setContentOffset导致scrollView滑动:

停止时会执行的方法:(前提是"(void)setContentOffset:(CGPoint)contentOffset animated:(BOOL)animated"触发时,animated为YES.为no时,其实也没必要用代理方法了,直接set后就能处理)

-(void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView

{}

综上可得,想要在每次scrollView滑动结束后执行某方法,

1.如果myScrollView.pagingEnabled=YES, 用

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{

　　//do something

}

2.如果.pagingEnabled=NO,则需要用两个

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

{

if(!decelerate)

{ //OK,真正停止了，do something}

}

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{　　

　　//OK,真正停止了，do something

}