ios – iCarousel拉动刷新并加载更多

您可以使用scrollOffset属性和carouselDidScroll方法来实现“Pull to refresh”& “加载更多”功能.

在这里有一些你需要知道的要点.

> scrollOffset< 0：用户试图拉动刷新.
> scrollOffset> numberOfItems – 2：将显示最后一项

在carouselDidScroll方法上实现此逻辑以存档功能.

- (void)carouselDidScroll:(iCarousel *)carousel {
  // Start new pull request when user pulls |carousel| 
  // a distance equal to 0.4 width/height of an item
  if (carousel.scrollOffset < -0.4) {
    [self pullTorefresh];
  }

  // Start new load more request when last item will be displayed.
  // In this situation,I ignore cases when |numberOfItems| is small
  // Ex: |numberOfItems| < 2
  if (carousel.scrollOffset > carousel.numberOfItems - 2) {
    [self loadMore];
  }
}

- (void)pullTorefresh {
  // Make sure have only one request at a time
  if (self.isPullingTorefresh) {
    return;
  }

  self.isPullingTorefresh = YES;

  // request API to receive new data

  // update |isPullingTorefresh| when request finishes
  self.isPullingTorefresh = NO;
}

- (void)loadMore {
  // Make sure have only one request at a time
  if (self.isLoadingMorE) {
    return;
  }

  self.isLoadingMore = YES;

  // request API to receive new data

  // update |isLoadingMore| when request finishes
  self.isLoadingMore = NO;
}

结果

有关更多详细信息,您可以查看我的示例

https://github.com/trungducc/stackoverflow/tree/icarousel-pull-to-refresh-load-more