iphone - iCarousel iphone 中不同位置的图片如何实现删除功能

Question

我正在使用如图所示的 iCarouselh here使用旋转木马类型 Liner Carousel 并实现了删除功能。我能够删除旋转木马中的图像，当我尝试删除可见屏幕中的任何其他图像时，它会移至旋转木马框架并删除。
我需要从原来的位置删除图像。

- (void)loadView {

    [super loadView];

    self.view.backgroundColor = [UIColor blackColor];
    
    carousel = [[iCarousel alloc] initWithFrame:CGRectMake(-130,300, 320, 100)];
    carousel.dataSource = self;
    carousel.delegate=self;
    carousel.type = iCarouselTypeLinear;
    carousel.scrollEnabled=YES;

    imageView=[[UIImageView alloc]initWithFrame:CGRectMake(60, 50, 200, 200)];
    [self.view addSubview:imageView];


}

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

    UIImage *image = [imagesArray objectAtIndex:index];

    UIButton *button =[UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(0,0, 60, 60); 
    [button setBackgroundImage:image forState:UIControlStateNormal];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    button.titleLabel.font = [button.titleLabel.font fontWithSize:50];
    [button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
    button.tag=index;
    NSLog(@"tag is %d",button.tag);
        
    UIButton *deleteButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    deleteButton.frame= CGRectMake(50, -5, 20 ,20);
    UIImage *img = [UIImage imageNamed:@"close.png"];
    [deleteButton setImage:img forState:UIControlStateNormal];
    [deleteButton addTarget:self action:@selector(deleteButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [button addSubview:deleteButton];
        
    return button;
}

-(void)deleteButtonClicked:(int )sender
{
    NSInteger currentIndex = carousel.currentItemIndex;
    [carousel removeItemAtIndex:currentIndex animated:YES];
   
}

请帮帮我。

Answer 1

您不应该删除位于 carousel.currentItemIndex 的项目，因为它不是与您单击的按钮对应的项目，它只是轮播中当前居中的项目。

要为您单击的按钮获取正确的项目索引，请执行以下操作:

-(void)deleteButtonClicked:(id)sender
{
    //get the index of the item view containing the button that was clicked
    NSInteger index = [carousel indexOfItemViewOrSubview:sender];

    //update the data model (always do this first)
    [imagesArray removeObjectAtIndex:index];

    //remove item from carousel
    [carousel removeItemAtIndex:index animated:YES];
}