cocoa-touch - 使用图像行创建 UI ScrollView

Question

我想在 ScrollView 上显示我的数据库中存在的图像。我还想连续显示 4 张图像，然后在下一行显示下 4 张，依此类推。最初 ScrollView 将仅显示 2 行，滚动后用户将能够垂直滚动浏览数据库中存在的所有图像。任何人都可以建议任何合适的措施来做到这一点或为此提供任何示例演示或代码。我们将不胜感激。

我正在使用此代码以水平方式获取图像。如何在连续 5 张图像后以垂直方式获取图像。我的代码:-

 - (void)layoutScrollImages
 {

     UIImageView *view = nil;
    NSArray *subviews = [scrollView1 subviews];
    CGFloat curXLoc = 40;
// reposition all image subviews in a horizontal serial fashion

//CGFloat curYLoc = 0;
for (view in subviews)
{
    //if ([view isKindOfClass:[UIImageView class]] && view.tag > 0)
    if(view)
    {
        CGRect frame = view.frame;
        frame.origin = CGPointMake(curXLoc, 40);
        view.frame = frame;
        curXLoc += (kScrollObjWidth);           

    }
}

     // set the content size so it can be scrollable
     [scrollView1 setContentSize:CGSizeMake((20 * kScrollObjWidth),[scrollView1 bounds].size.height)];
     //[self layoutScrollLabels];
 }

在 View 中确实加载了我创建的 ScrollView :-

scrollView1 = [[UIScrollView alloc] initWithFrame:CGRectMake(25,48,630,180)];
[scrollView1 setBackgroundColor:[UIColor lightGrayColor]];
[scrollView1 setCanCancelContentTouches:NO];
//scrollView1.indicatorStyle = UIScrollViewIndicatorStyleWhite;
//scrollView1.clipsToBounds = YES;      // default is NO, we want to restrict drawing within our scrollview
scrollView1.scrollEnabled = YES;
scrollView1.pagingEnabled=YES;
scrollView1.showsVerticalScrollIndicator = YES;
//scrollView1.showsHorizontalScrollIndicator = YES;
//scrollView1.alwaysBounceVertical = YES;
//scrollView1.alwaysBounceHorizontal = NO;

    [self.view addSubview:scrollView1];

谢谢，克里斯蒂

Answer 1

你看过Three20的相册控件吗？有教程here (作者 Ray Wenderlich)介绍如何使用它。