滚动到底部时如何为表格视图实现更多加载?(即拉起刷新) [英] how to implement loading more for table view when scroll to bottom?(i.e. pull up to refresh)
问题描述
当视图滚动到底部时,我想加载更多数据,即拉动刷新,但我不知道如何显示"Loading More ..."之类的字样,如下所示,并在该单元格处停止tableview,因为如果使用
I want to load more data when view scroll to bottom,i.e. pull up to refresh, but I don't know how to display words like "Loading More..." as showing below and stop the tableview at that cell, because if use
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:10 inSection:0];
[self.tableView scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
有错误:
*** Terminating app due to uncaught exception 'NSRangeException', reason: '-[TNTableView _contentOffsetForScrollingToRowAtIndexPath:atScrollPosition:]: row (10) beyond bounds (0) for section (0).'
并且如果tableView没有数据,则加载更多内容仍在底部单元格中,例如一个表格可以显示9行,如果没有用于表格视图的数据,则正在加载更多"单元格位于第10行.
and if there's no data for tableView, loading more is still at the bottom cell, e.g. a table can show 9 rows, if there's no data for tableview, the "Loading More" cell is at the 10th row.
推荐答案
我在AppCoda网站上找到了一个很好的例子,尝试在您的应用程序中使用它.
I found a great example in AppCoda website, try to use it in your app.
http://www.appcoda.com/pull-to-refresh-uitableview-empty/
我已经在我的应用程序中使用过,它确实起作用了……这可能正是您想要的.
I've used in my app and it really worked... and it is probably what you are looking for.
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