-(id)initWithFrame:(CGRect)frame
id)target
SEL)sel
{
self=[super initWithFrame:frame];
if (self)
{
scrow.delegate=target;
m_showBar=[[ShowBar alloc]initWithFrame:CGRectMake(15, 28, 70, 2)];
[self addSubview:m_showBar];
}
return self;
}
-(void)setShowBarPoint
CGPoint)barPoint
{
m_showBar.frame=CGRectMake(15+barPoint.x/3+3, 28, 70, 2);
}
UIViewController:
- (void)viewDidLoad
{
//第一次启动实例化uiview
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView //uiscrowView代理方法
//offset changes
{
CGPoint rec=scrowView.scrow.contentOffset; //得到scrow的实时动态contentOffSet坐标
[scrowView setShowBarPoint:rec];
}