Question

我想显示所选单元格的子视图。双击单元格时，所选单元格应展开，子视图应显示在该扩展区域中。我能够在单元格的扩展区域中显示的子视图中显示图像。但是当我在双击单元格后滚动UITableView时，子视图中显示的图像正在消失。

请建议我.............

扩展单元格：

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (selectedRow && indexPath.row == tappedRow && (tapCount == 2 || tapCount ==3))
        return 210;

    return 62;
}

显示所选行的SubView的代码

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    //UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"ChooseAPlayer"];
    if(tapCount == 1 && tappedRow == indexPath.row){

        tapCount = tapCount + 1;
        imgView.hidden =YES;

        selectedRow = [self.tableView indexPathForSelectedRow];
        [self.tableView reloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationNone];
        imgView.hidden = NO;
        button.frame = CGRectMake(245,18,image.size.width, image.size.height);
        //  cell.accessoryView.hidden = YES;
        [UIView commitAnimations];

    }
    else if (tapCount == 0){

        tapCount = tapCount +1;
        tappedRow = indexPath.row;
    }
    else if (tapCount ==2 && tappedRow == indexPath.row){

        tapCount = tapCount + 1;
        imgView.hidden =YES;

        selectedRow = [self.tableView indexPathForSelectedRow];
        [self.tableView reloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationNone];
        imgView.hidden = NO;
        button.frame = CGRectMake(245,18,image.size.width, image.size.height);
        //  cell.accessoryView.hidden = YES;
        [UIView commitAnimations];
    }
    else if (tapCount ==3 && tappedRow == indexPath.row){
        tapCount = 0;
        //cell.accessoryView.hidden = NO;
        imgView.hidden = YES;

        [self.tableView setRowHeight:62];
        [self.tableView beginUpdates];
        [self.tableView endUpdates];
        [imgView release];
    }
    else if (tappedRow != indexPath.row){
        tapCount = 1;
        tappedRow = indexPath.row;
        imgView.hidden = YES;

        [imgView release];
    }

}




- (UITableViewCell *)tableView: (UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"ChooseAPlayer"];


    imgView.hidden = YES;


    if ( indexPath.row == tappedRow && (tapCount == 2 || tapCount ==3))
    {
        imgView.tag = indexPath.row;
        imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 50, 320,150)];
        imgView.backgroundColor = [UIColor clearColor];
        [imgView setImage:[UIImage imageNamed:@"Playersdetails.png"]];
        [cell.contentView addSubview:imgView];
        imgView.hidden= NO;
    }


    UILabel *lblName = (UILabel *)[cell viewWithTag:101];
    [lblName setText:[inputPlayersList objectAtIndex:[indexPath row]]];
    UILabel *Teams = (UILabel *)[cell viewWithTag:103];
    [Teams setText:[inputPlayersTeams objectAtIndex:[indexPath row]]];

    UILabel *AwayTeams = (UILabel *)[cell viewWithTag:104];
    [AwayTeams setText:[inputPlayersAwayteams objectAtIndex:[indexPath row]]];

    UILabel *PlayersPrice = (UILabel *)[cell viewWithTag:105];
    [PlayersPrice setText:[inputPlayersPrice objectAtIndex:[indexPath row]]];



    image = [UIImage   imageNamed:@"Select_white.png"];
                      button = [UIButton buttonWithType:UIButtonTypeCustom];
                      CGRect frame = CGRectMake(0, 0, image.size.width, image.size.height);
                      button.frame = frame;
                      [button setBackgroundImage:image forState:UIControlStateNormal];

                      [button addTarget:self action:@selector(accessoryButtonTapped:event:) forControlEvents:UIControlEventTouchUpInside];
                      button.backgroundColor = [UIColor clearColor];
                      cell.accessoryView = button;

    return cell;
}

Answer 1

在cellForRowAtIndexPath

中试试

 //    imgView.hidden = YES; //comment this line

 if ( indexPath.row == tappedRow && (tapCount == 2 || tapCount ==3))
            {
                imgView.tag = indexPath.row;
                imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 50, 320,150)];
                imgView.backgroundColor = [UIColor clearColor];
                [imgView setImage:[UIImage imageNamed:@"Playersdetails.png"]];
                [cell.contentView addSubview:imgView];
                imgView.hidden= NO;
            }
            else
            {
                imgView.hidden = YES;

            }

Answer 2

要在UITableView上进行单击/双击操作，请按照以下步骤操作：

1。创建CustomTableViewCell的{{1}}子类。并覆盖上述方法。

UITableViewCell

2。在#import "CustomTableViewCell.h" @implementation CustomTableViewCell - (void)dealloc { [super dealloc]; } - (void)drawRect:(CGRect)rect { CGContextRef ctx = UIGraphicsGetCurrentContext(); // Use the same color and width as the default cell separator for now CGContextSetRGBStrokeColor(ctx, 0.5, 0.5, 0.5, 1.0); CGContextSetLineWidth(ctx, 0.5); for (int i = 0; i < [columns count]; i++) { CGFloat f = [((NSNumber*) [columns objectAtIndex:i]) floatValue]; CGContextMoveToPoint(ctx, f, 0); CGContextAddLineToPoint(ctx, f, self.bounds.size.height); } CGContextStrokePath(ctx); [super drawRect:rect]; } - (void)addColumn:(CGFloat)position { [columns addObject:[NSNumber numberWithFloat:position]]; } - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *aTouch = [touches anyObject]; NSLog(@"touchesBegan tapCount = %d", [aTouch tapCount]); //// imgView.tag = indexPath.row; imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 50, 320,150)]; imgView.backgroundColor = [UIColor clearColor]; [imgView setImage:[UIImage imageNamed:@"Playersdetails.png"]]; [cell.contentView addSubview:imgView]; imgView.hidden= NO; ///// } - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *aTouch = [touches anyObject]; NSLog(@"touchesCancelled tapCount = %d", [aTouch tapCount]); } - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *aTouch = [touches anyObject]; NSLog(@"touchesEnded tapCount = %d", [aTouch tapCount]); } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *aTouch = [touches anyObject]; NSLog(@"touchesMoved tapCount = %d", [aTouch tapCount]); } UITableView's方法中，添加cellForRowAtIndexPath代替CustomTableViewCell。

UITableViewCell

双击UITableViewCell如何显示子视图？

2 个答案: