Keep uitableview static when inserting rows at the top

Question

I have a tableView that I\'m inserting rows into at the top.

Whilst I\'m doing this I want the current view to stay completely still, so the rows only appear if you

Answer 1

@Dean's way of using an image cache is too hacky and I think it destroys the responsiveness of the UI.

One proper way: Use a UITableView subclass and override -setContentSize: in which you can by some means calculate how much the table view is pushed down and offset that by setting contentOffset.

This is a simplest sample code to handle the simplest situation where all insertions happen at the top of table view:

@implementation MyTableView

- (void)setContentSize:(CGSize)contentSize {
        // I don't want move the table view during its initial loading of content.
    if (!CGSizeEqualToSize(self.contentSize, CGSizeZero)) {
        if (contentSize.height > self.contentSize.height) {
            CGPoint offset = self.contentOffset;
            offset.y += (contentSize.height - self.contentSize.height);
            self.contentOffset = offset;
        }
    }
    [super setContentSize:contentSize];
}

@end