滚动时 UITableView 单元格变为空白 [英] UITableView cell goes blank when scrolling

问题描述

我在 UITableViewController 中设置了单节、单单元格自定义单元格，以显示比屏幕长的视图.但是，在测试时，我注意到在离开视图区域之前向下滚动时，单元格会消失(变为空白).这没什么特别的，但我不明白为什么向下滚动时它会消失，尤其是当它离可视区域还很远的时候.

I have setup a single section, single cell custom cell in a UITableViewController to display a view that was longer than the screen. However when testing I notice the cell will disappear (go blank) when scrolling down before it leaves the view area. It's nothing fancy, but I don't understand why it would would disappear when scrolling down, especially when it is nowhere near leaving the viewable area.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

VendorDetailCell *cell =  [tableView dequeueReusableCellWithIdentifier:@"VendorDetailCell"];
cell.vendorImage.image = [UIImage imageWithData: self.imageData.data];
cell.vendorTitle.text = self.imageData.vendorTitle;
cell.vendorDescription.text = self.imageData.vendorDescription;



   return cell;
}

推荐答案

当表格视图中单元格的框架滚动到表格视图的框架之外时，就会发生这种情况.

This can happen when the frame of the cell in the table view is scrolled so it's outside of the frame of the table view.

• 你是否实现了tableView:heightForRowAtIndexPath:?

那个高度是单元格的高度吗?

Is that height the height of cell?

将单元格拆分成几个单元格会更好吗在表格视图的某一部分?

Would the cell be better served as being broken up into several cells in one section of the table view?

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