iCarousel 重复图像

Posted 2023-03-08

【中文标题】iCarousel 重复图像

【英文标题】：iCarousel repeating Images

【发布时间】：2013-09-30 16:34:54

【问题描述】：

我在我的应用程序中使用了令人惊叹的 iCarousel 库。但我面临一个问题。我正在使用此代码将数据填充到轮播中。

- (NSUInteger)numberOfItemsInCarousel:(iCarousel *)carousel

   //return the total number of items in the carousel
   return [items count];


- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSUInteger)index reusingView:(UIView *)view

    UILabel *label = nil;
UIImageView *imageView = nil;

    //create new view if no view is available for recycling
if (view == nil)

    view = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, [[UIScreen mainScreen] bounds].size.width - 60, [[UIScreen mainScreen] bounds].size.height -150)];
    view.contentMode = UIViewContentModeCenter;
    CGFloat width = [[UIScreen mainScreen] bounds].size.width;
    CGRect webFrame = CGRectMake(0.0, 0.0, width - 60, width - 60);
    imageView = [[ UIImageView alloc ] initWithFrame:webFrame];
    [view addSubview:imageView];
    label = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 240.0, width -60, 260.0)];
    label.backgroundColor = [UIColor clearColor];
    label.textAlignment = NSTextAlignmentCenter;
    label.font = [label.font fontWithSize:22];
    label.numberOfLines = 5;
    label.lineBreakMode = NSLineBreakByWordWrapping;
    label.tag = 1;
    [view addSubview:label];

else

    //get a reference to the label in the recycled view
    label = (UILabel *)[view viewWithTag:1];


NSString *imageName = [NSString stringWithFormat:@"%@.pdf",[[items objectAtIndex:index] objectAtIndex:0]];
NSLog(@"Image File Name: %@", imageName);
NSLog(@"Image Explanation: %@", [[items objectAtIndex:index] objectAtIndex:1]);
[imageView setImage:[ UIImage imageWithPDFNamed:imageName atSize:CGSizeMake( 150, 130 ) ]];
label.text = [[items objectAtIndex:index] objectAtIndex:1];

return view;

numberOfItemsInCarousel 返回 38 但轮播仅显示 6 张图像，然后循环重复它们。标签文本根据数组索引正确显示。 我该如何解决？

【问题讨论】：

您好，我也遇到了同样的问题，您找到解决方案了吗？

【参考方案1】：

您没有从重复使用的视图中获得imageView，请阅读该行

[imageView setImage:[ UIImage imageWithPDFNamed:imageName atSize:CGSizeMake( 150, 130 ) ]];

作为

[nil setImage:[ UIImage imageWithPDFNamed:imageName atSize:CGSizeMake( 150, 130 ) ]];

当view != nil。获取imageView 的方式与获取label 的方式相同。