Am I misunderstanding reloadRowsAtIndexPaths:

Question

I have a grouped table view where I want to reload a particular row. When I call reloadRowsAtIndexPaths: the row disappears completely from the table view. Is there something else I need to be doing?

//this is the method doing the reload
-(void)setDurationTableViewCell:(NSString *)dur {

    self.workoutDuration = dur;
    NSIndexPath *durPath = [NSIndexPath indexPathForRow:3 inSection:0];
    NSArray *paths = [NSArray arrayWithObject:durPath];
    [woTableView reloadRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationRight];

}//end setDurationTableViewCell


//this is the cellForRowAtIndexPath method if it has anything to do with my issue
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    UITableViewCell *cell;

    if (indexPath.row == 0) {

        //workout comments
        cell = [tableView dequeueReusableCellWithIdentifier:@"workoutCommentsCell"];
        if (nil == cell) { 
            cell = workoutCommentsCell;
            cell.selectionStyle = UITableViewCellStyleValue1;
        }

    }else if (indexPath.row == 1) {

        //difficulty
        cell = [tableView dequeueReusableCellWithIdentifier:@"workoutDifficultyCell"];
        if (nil == cell) { 
            cell = workoutDifficultyCell;
            cell.selectionStyle = UITableViewCellStyleValue1;
        }
        cell.textLabel.text = [NSString stringWithFormat:@"Difficulty: %@", self.workoutDifficulty];

    }else if (indexPath.row == 2) {

        //workoutDate
        cell = [tableView dequeueReusableCellWithIdentifier:@"workoutDateCell"];
        if (nil == cell) { 
            cell = workoutDateCell;
            cell.selectionStyle = UITableViewCellStyleValue1;
        }
        cell.textLabel.text = [NSString stringWithFormat:@"Date: %@", self.workoutDate];

    }else if (indexPath.row == 3) {

        //workoutDuration
        cell = [tableView dequeueReusableCellWithIdentifier:@"workoutTimerCell"];
        if (nil == cell) { 
            cell = workoutTimeCell;
            cell.selectionStyle = UITableViewCellStyleValue1;
        }
        cell.textLabel.text = [NSString stringWithFormat:@"Duration: %@", self.workoutDuration];

    }//end else-if


    return cell;

}//end cellForRowAtIndexPath

Answer 1

Try wrapping your ReloadRowsAtIndexPaths inside

[self.tableView beginUpdates];
[self.tableView endUpdates];

e.g

[self.tableView beginUpdates];
[woTableView reloadRowsAtIndexPaths:paths withRowAnimation:UITableViewRowAnimationRight];
[self.tableView endUpdates]

Answer 2

I recently started learning iPhone SDK and most probably i can´t give you the answer... But, don´t you have to replace the code in the if (nil == cell) blocks with

    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 
reuseIdentifier:@"workoutTimerCell"] autorelease];

Answer 3

I had the same issue and apparently setting withRowAnimation: to UITableViewRowAnimationNone solved it for me. Can't say why, but otherwise the cell makes a nice animation and is then gone.