0

当我删除 tableView 中的一行时,我希望选择它上面的行。这不会发生...

这是代码:

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        if (indexPath.section == 0) {
            Formula *toDelete = (Formula *)[self.userFRMList objectAtIndex:indexPath.row];
            NSManagedObjectContext *context = (NSManagedObjectContext *)[(PSAppDelegate *)[[UIApplication sharedApplication] delegate] managedObjectContext];
            NSError *error = nil;
            [context deleteObject:toDelete];
            [context save:&error];
            [self updateDataSource];
            [tableView beginUpdates];
            [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
            if ([self.userFRMList count] != 0) {

                if (indexPath.row == 0) {
                    [self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:0  inSection:0] animated:YES scrollPosition:UITableViewScrollPositionNone];
                    self.crtFormula = [self.userFRMList objectAtIndex:0];
                    [self.delegate theFormulaIs:self.crtFormula];

                } else {
                    [self.tableView selectRowAtIndexPath:[NSIndexPath indexPathForRow:indexPath.row - 1  inSection:indexPath.section] animated:YES scrollPosition:UITableViewScrollPositionNone];
                    self.crtFormula = [self.userFRMList objectAtIndex:indexPath.row - 1];
                    [self.delegate theFormulaIs:self.crtFormula];

                }
            }else {
                self.crtFormula = nil;
                [self.delegate showBlank];
            }
            [tableView endUpdates];
        }

    }   

}
4

2 回答 2

1

至少,选择部分需要在更新块之外!把它放在你的endUpdates电话之后。

如果这不起作用,请更进一步:尝试使用延迟性能(例如dispatch_after)进行选择部分。现在,您正在尝试执行选择,而我们仍在响应中commitEditingStyle- 我们甚至还没有删除该行。延迟性能让接口在删除后稳定下来。

您将需要使用与删除后情况相对应的索引编号。

于 2013-03-23T17:32:46.097 回答
0
// For example I have set deletedRowIndex to 10, and next Line will select Row Number 9 in tableview
int deletedRowIndex = 10;
[tblViewList selectRowAtIndexPath:[NSIndexPath indexPathWithIndex:deletedRowIndex-1] animated:YES scrollPosition:UITableViewScrollPositionMiddle];
于 2013-03-23T18:13:15.190 回答