如何在UITableView中同时插入和删除一行

我想使UITableView像手风琴一样工作。当一个行被点击时，它应该在被点击的行的正下方插入一个特殊行，然后从以前的点击中删除任何其他特殊行。我已经尝试了很多东西，但下面的代码是我最近的尝试。如何在UITableView中同时插入和删除一行

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    NSIndexPath *removeIndex; 
    for (int i = 0; i < [players count]; i++) { 
     NSString *player = [players objectAtIndex:i]; 
     if ([player isEqualToString:@"ADJUST_SCORE_ROW"]) { 
      removeIndex = [NSIndexPath indexPathForRow:i inSection:indexPath.section]; 
      [players replaceObjectAtIndex:i withObject:@"DELETE_ME"]; 
      break; 
     } 
    } 

    [scoreTableView beginUpdates]; 
    NSIndexPath *insertPath; 
    if (removeIndex && [removeIndex row] < indexPath.row) { 
     insertPath = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]; 
    } else { 
     insertPath = [NSIndexPath indexPathForRow:indexPath.row + 1 inSection:indexPath.section]; 
    } 
    [players insertObject:@"ADJUST_SCORE_ROW" atIndex:insertPath.row]; 

    [scoreTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:insertPath] withRowAnimation:UITableViewRowAnimationTop]; 

    for (int i = 0; i < [players count]; i++) { 
     NSString *player = [players objectAtIndex:i]; 
     if ([player isEqualToString:@"DELETE_ME"]) { 
      [players removeObject:player]; 
      break; 
     } 
    } 

    if (removeIndex) { 
     [scoreTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:removeIndex] withRowAnimation:UITableViewRowAnimationTop]; 
    } 

    [scoreTableView endUpdates]; 


}

来源

2012-02-01 Scott Lewis

的关键，这是其中的删除和插入件事情。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 
    Player *selectedPlayer = nil; 

    //Get rid of any adjustment score row 
    NSIndexPath *removeIndex; 
    for (int i = 0; i < [players count]; i++) { 
     id player = [players objectAtIndex:i]; 
     if ([player isKindOfClass:[NSString class]] && [player isEqualToString:@"ADJUST_SCORE_ROW"]) { 
      if (i == indexPath.row) { 
       [scoreTableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone]; 
       return; //This is the case where the row that was selected was an adjustment row 
      } 
      removeIndex = [NSIndexPath indexPathForRow:i inSection:indexPath.section]; 
      [players replaceObjectAtIndex:i withObject:@"DELETE_ME"]; 
      break; 
     } 
    } 

    selectedPlayer = [players objectAtIndex:indexPath.row]; 

    [scoreTableView beginUpdates]; 
    NSIndexPath *insertPath; 
    if (removeIndex && [removeIndex row] < indexPath.row) { 
     insertPath = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]; 
    } else { 
     insertPath = [NSIndexPath indexPathForRow:indexPath.row + 1 inSection:indexPath.section]; 
    } 

    HoleScore *holeScore = [[round scoreForPlayer:[players objectAtIndex:indexPath.row] holeGroup:self.holeGroupIndex andHole:hole.holeIndex] objectForKey:CURRENT_HOLE_SCORE]; 
    if (holeScore == nil) { 

     NSEntityDescription *scoreEntity = [NSEntityDescription entityForName:@"HoleScore" inManagedObjectContext:moc]; 
     holeScore = [[HoleScore alloc] initWithEntity:scoreEntity insertIntoManagedObjectContext:moc]; 
     [holeScore setPlayer:selectedPlayer]; 
     [holeScore setHoleGroupIndex:[NSNumber numberWithInteger:holeGroupIndex]]; 
     [holeScore setHoleIndex:[NSNumber numberWithInteger:hole.holeIndex]]; 

     [holeScore setStrokes:[NSNumber numberWithInteger:[hole par]]]; 
     [holeScore setPuts:[NSNumber numberWithInteger:2]]; 

     HoleScoreCardTableViewCell *playerCell = (HoleScoreCardTableViewCell*)[scoreTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]]; 
     [playerCell setHoleScore:holeScore]; 

     [round addScoresObject:holeScore]; 

     NSError *error; 
     [moc save:&error]; 

     if (error) { 
      NSLog(@"Error saving: %@", error.localizedDescription); 
     } 

    } 

    for (int i = 0; i < [players count]; i++) { 
     id player = [players objectAtIndex:i]; 
     if ([player isKindOfClass:[NSString class]] && [player isEqualToString:@"DELETE_ME"]) { 
      [players removeObject:player]; 
      break; 
     } 
    } 

    if (removeIndex) { 
     [scoreTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:removeIndex] withRowAnimation:UITableViewRowAnimationTop]; 
    } 

    [players insertObject:@"ADJUST_SCORE_ROW" atIndex:insertPath.row]; 

    [scoreTableView insertRowsAtIndexPaths:[NSArray arrayWithObject:insertPath] withRowAnimation:UITableViewRowAnimationTop]; 

    [scoreTableView endUpdates]; 

}

来源

2012-03-19 14:16:07

你必须更新你切面数量和相应的委托方法的行数...

来源

2012-02-01 16:08:20 Aymarick

我认为正在处理当我更新支持表的数组。我很高兴错了，但我认为问题中包含的代码处理了段和相应行的数量。 – 2012-02-01 16:40:37

如何在UITableView中同时插入和删除一行

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