滾動視圖上的懸浮控件

myView = [[UIView alloc] initWithFrame:CGRectMake(10, 100, 150, 30)];

    myView.backgroundColor = [UIColor redColor];

    [self.tableView addSubview:myView];

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

if(self.tableView.contentOffset.y > 100)

    myView.frame = CGRectMake(myView.frame.origin.x, self.tableView.contentOffset.y , myView.frame.size.width，myView.frame.size.height);

｝