iCarousel 不会加载图像
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【中文标题】iCarousel 不会加载图像【英文标题】:iCarousel won't load images 【发布时间】:2016-07-15 13:59:01 【问题描述】:所以我尝试使用 iCarousel 以图像的形式显示产品,然后用户可以简单地滚动并查看所有可用的产品。
由于某种原因,当您加载视图控制器时,它根本不显示任何图像,甚至不显示轮播,它在我使用数字 int 等之前工作过。
我的代码如下:
ApparelViewController.m
#import "ApparelViewController.h"
@interface ApparelViewController ()
@property (nonatomic, strong) NSMutableArray *images;
@end
@implementation ApparelViewController
@synthesize carouselView = _carouselView;
@synthesize images = _images;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]))
//get image paths
NSArray *imagePaths = [[NSBundle mainBundle] pathsForResourcesOfType:@"png" inDirectory:@"Products"];
//preload images (although FXImageView can actually do this for us on the fly)
_images = [[NSMutableArray alloc] init];
for (NSString *path in imagePaths)
[_images addObject:[UIImage imageWithContentsOfFile:path]];
return self;
- (void)dealloc
//it's a good idea to set these to nil here to avoid
//sending messages to a deallocated viewcontroller
_carouselView.delegate = nil;
_carouselView.dataSource = nil;
- (void)viewDidLoad
[super viewDidLoad];
self.view.backgroundColor = [UIColor colorWithRed:236/255 green:240/255 blue:241/255 alpha:1];
// Do any additional setup after loading the view.
_carouselView.type = iCarouselTypeRotary;
- (void)viewDidUnload
[super viewDidUnload];
//free up memory by releasing subviews
self.carouselView = nil;
- (NSInteger)numberOfItemsInCarousel:(iCarousel *)carousel
return [_images count];
- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view
if (view == nil)
FXImageView *imageView = [[FXImageView alloc] initWithFrame:CGRectMake(0, 0, 200.0f, 200.0f)];
imageView.contentMode = UIViewContentModeScaleAspectFit;
imageView.asynchronous = YES;
imageView.reflectionScale = 0.5f;
imageView.reflectionAlpha = 0.25f;
imageView.reflectionGap = 10.0f;
imageView.shadowOffset = CGSizeMake(0.0f, 2.0f);
imageView.shadowBlur = 5.0f;
imageView.cornerRadius = 10.0f;
view = imageView;
//show placeholder
((FXImageView *)view).processedImage = [UIImage imageNamed:@"page.png"];
((FXImageView *)view).image = _images[index];
return view;
- (void)didReceiveMemoryWarning
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
- (IBAction)goBack:(id)sender
NSString * storyboardName = @"Main";
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:@"navBar"];
[self presentViewController:vc animated:YES completion:nil];
@end
然后在ApparelViewController.h
文件中我有以下代码:
#import <UIKit/UIKit.h>
#import "iCarousel.h"
#import "FXImageView.h"
@interface ApparelViewController : UIViewController <iCarouselDelegate, iCarouselDelegate>
@property (strong, nonatomic) IBOutlet UIButton *backButton;
@property (strong, nonatomic) IBOutlet iCarousel *carouselView;
@end
真正烦人的是我以前使用过 iCarousel,但对于 Swift,所以我知道它是如何工作的,但我不太了解 Obj-C!
关于如何显示图像有什么想法吗?
【问题讨论】:
【参考方案1】:你可以检查一些事情,
-
检查 'images' 在 'numberOfItemsInCarousel' 中返回的值大于 0,很明显但值得检查。
检查图像是否实际加载,即检查 image[index] 是否实际加载图像。
我对 FXImageView 不太熟悉,但请尝试使用
(void)setImage:(UIImage *)image;
而不是分配@property (nonatomic, strong) UIImage *image;
。文档说 .image 实际上并没有设置图像,而是添加效果。
如果这些都不能解决您的问题,请发表评论,我会继续寻找,祝您好运。
【讨论】:
我已经尝试了很多东西,包括你的建议,但没有运气:(你有没有机会尝试使用 iCarousel 创建一个项目,看看你是否可以让它显示不同的图像请! 我不介意试一试,也许我们可以继续聊天?来这个房间,chat.***.com/rooms/26424/iosandroidchaosoverflow以上是关于iCarousel 不会加载图像的主要内容,如果未能解决你的问题,请参考以下文章
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