隨風而行

有一串內文要計算scroll view所需要的長度

    CGSize constraint = CGSizeMake(300 - (0 * 2), 20000.0f);

    CGSize size = [url_contentsizeWithFont:[UIFontsystemFontOfSize:16] constrainedToSize:constraint lineBreakMode:UILineBreakModeWordWrap];

    CGFloat height = MAX(size.height,10)+15;

        scrollView = [[UIScrollViewalloc] initWithFrame:CGRectMake(0, 205, 320, 200)];

        [scrollViewsetContentSize:CGSizeMake(320, height)];

        [scrollViewaddSubview:label_content];

        [self.viewaddSubview:scrollView];