UITableView - Select nearest row after row deletion

like build in apple notes app, after you swipe to delete the selected row, it will select the nearest available row automatically.

The logic should be:

if row count > 0 then if deleted_row == last row then

select deleted_row_index-1 row

else

select deleted_row_index+1 row

end

end

i have try to 开发者_运维百科implement the above logic in the commitEditingStyle event, but the selection fail.

the selectRowAtIndexPath logic just don't work in this event, if i apply it in a button, it works.

any idea?

One way to solve this is to use the method performSelector:withObject:afterDelay:.

From within the tableView:commitEditingStyle:forRowAtIndexPath: you can:

NSIndexPath *indexPathToSelect = ...
[self performSelector:@selector(selectRowAtIndexPath:) 
           withObject:indexPathToSelect
               afterDelay:0];

Then define the selectRowAtIndexPath: method in your view controller

- (void)selectRowAtIndexPath:(NSIndexPath *)indexPath {
  [self.tableView selectRowAtIndexPath:indexPath 
                              animated:YES 
                        scrollPosition:UITableViewScrollPositionTop];
}

When you delete a row, you should have its indexPath. Then you call the method

(void)scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated

For indexPath you can set the new indexPath, by increasing or decreasing the indexPath.row by 1.

scrollPosition sets whether the tableView scrolls up or down, and animated should be clear.

After all, you manually select that UITableViewCell.

[cell setSelected:YES];