ios - 顶 View 时如何进行分页

Question

我想在用户将tableView滚动到顶部时进行分页，因为我已经使用了这种UIScrollView方法。但是它将多次调用api

Answer 1

不好意思

当服务器提供数据计数数量

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
    if (indexPath.row == 0) { // indexpath.row == 0 means top cell in tableViewCell
        if (arrNews.count  < totalPageCount  ) { //totalPageCount means total number of data exist in server which is needs in server resopnse
            [self getDataFromServer];
        }
    }
}

服务器未提供数据计数时

-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{
    if (indexPath.row == 0) { // indexpath.row == 0 means top cell in tableViewCell
        if (isMoreData) { //isMoreData is bolean you need to disable while not data found from server
            [self getDataFromServer];
        }
    }
}