uitableviewcell的子視圖問題

Question

我添加了一個子視圖uitableviewcells其工作正常，但是當我向上或向下滾動子視圖添加多次。我不知道我錯在哪裏。

這裏是我的代碼：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

static NSString *CellIdentifier = @"MainPageCellView"; 
MainPageTableCellView *cell = (MainPageTableCellView *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

if (cell == nil) { 
    [[NSBundle mainBundle] loadNibNamed:@"MainPageTableCellView" owner:self options:nil]; 
    cell = mainPageTableCell; 
} 



[cell setNameText:[namesArray objectAtIndex:indexPath.row]]; 
[cell setPositionText:[positionArray objectAtIndex:indexPath.row]]; 
[cell setCompanyNameText:[companyNameArray objectAtIndex:indexPath.row]]; 
[cell setDistanceText:[distArray objectAtIndex:indexPath.row]]; 
[cell setImageViewImage:[imagesArray objectAtIndex:indexPath.row]]; 


UIImage *halo = [UIImage imageNamed:@"h1.png"]; 
UIImageView *haloV = [[UIImageView alloc] initWithImage:halo]; 

if(indexPath.row == 0) 
[cell addSubview: haloV]; 
else if(indexPath.row ==2) 
[cell addSubview: haloV]; 
else if(indexPath.row ==3) 
[cell addSubview: haloV]; 


return cell; 

} 

Answer 1

您要添加子視圖他們是否剛剛創建或他們正在重用的細胞。當您上下滾動時，它們會被重用，因此子視圖會重複添加。

將調用移動到if（cell == nil）塊中的addSubview，並且應該解決問題。

if (cell == nil) { 
    [[NSBundle mainBundle] loadNibNamed:@"MainPageTableCellView" owner:self options:nil]; 
    cell = mainPageTableCell; 

    UIImage *halo = [UIImage imageNamed:@"h1.png"]; 
    UIImageView *haloV = [[UIImageView alloc] initWithImage:halo]; 

    if(indexPath.row == 0) 
    [cell addSubview: haloV]; 
    else if(indexPath.row ==2) 
    [cell addSubview: haloV]; 
    else if(indexPath.row ==3) 
    [cell addSubview: haloV]; 
}