更改UIViewTableCell風格不工作

Question

我產生我有演技像如手風琴一個UITableView：

關閉：

• 項目1

開：

• item 1
  • 子物品1

目前，我有下面的代碼，目前風格無論是第1項和子項目。

問題是我無法更新單元格的子項目字體/文本顏色。我可以改變背景顏色。

這真的很讓人困惑。

您能否提供解決方案？

下面是表視圖的當前狀態的屏幕截圖：

下面是一些有關的代碼的：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
    static NSString *ParentCellIdentifier = @"ParentCell"; 
    static NSString *ChildCellIdentifier = @"ChildCell"; 

    BOOL isChild = currentExpandedIndex > -1 && indexPath.row > currentExpandedIndex && indexPath.row <= currentExpandedIndex + [[subItems objectAtIndex:currentExpandedIndex] count]; 

    UITableViewCell *cell; 

    if (isChild) { 
     cell = [tableView dequeueReusableCellWithIdentifier:ChildCellIdentifier]; 
    } 
    else { 
     cell = [tableView dequeueReusableCellWithIdentifier:ParentCellIdentifier]; 
    } 

    if (cell == nil) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ParentCellIdentifier]; 
    } 


    if (isChild) { 
     cell.detailTextLabel.text = [[subItems objectAtIndex:currentExpandedIndex] objectAtIndex:indexPath.row - currentExpandedIndex - 1]; 
    } 
    else { 
     int topIndex = (currentExpandedIndex > -1 && indexPath.row > currentExpandedIndex) ? indexPath.row - [[subItems objectAtIndex:currentExpandedIndex] count] : indexPath.row; 
     cell.textLabel.text = [topItems objectAtIndex:topIndex]; 
     cell.detailTextLabel.text = @""; 
    } 

    NSUInteger row = indexPath.row; 
    if(!isChild){ 
     switch (row) { 
      case 0: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.529 green:0.655 blue:0.733 alpha:1]; 
       break; 
      case 1: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.176 green:0.282 blue:0.341 alpha:1]; 
       break; 
      case 2: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.51 green:0.357 blue:0.42 alpha:1]; 
       break; 
      case 3: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.808 green:0.561 blue:0.216 alpha:1]; 
       break; 
      case 4: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.631 green:0.655 blue:0.282 alpha:1]; 
       break; 
      case 5: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.753 green:0.314 blue:0.235 alpha:1]; 
       break; 
      case 6: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.431 green:0.176 blue:0.416 alpha:1]; 
       break; 
      case 7: 
       cell.contentView.backgroundColor = [UIColor colorWithRed:0.078 green:0.506 blue:0.506 alpha:1]; 
       break; 
      default: 
       break; 
     } 

     cell.textLabel.backgroundColor = [UIColor clearColor]; 
     cell.selectionStyle = UITableViewCellSelectionStyleNone; 
     [[cell textLabel] setFont:[UIFont fontWithName:@"LoveYaLikeASisterSolid" size:14.0]]; 
     cell.textLabel.textColor = [UIColor whiteColor]; 
    } 
    else{ 
     NSLog(@"Row %lu",(unsigned long)row); 
    } 

    return cell; 
} 

#pragma mark - Table view delegate 

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

    BOOL isChild = currentExpandedIndex > -1 && indexPath.row > currentExpandedIndex && indexPath.row <= currentExpandedIndex + [[subItems objectAtIndex:currentExpandedIndex] count]; 

    if (isChild) { 
     NSLog(@"A child was tapped, do what you will with it"); 
     return; 
    } 

    [self.tableView beginUpdates]; 

    if (currentExpandedIndex == indexPath.row) { 
     [self collapseSubItemsAtIndex:currentExpandedIndex]; 
     currentExpandedIndex = -1; 
    } 
    else { 

     BOOL shouldCollapse = currentExpandedIndex > -1; 

     if (shouldCollapse) { 
      [self collapseSubItemsAtIndex:currentExpandedIndex]; 
     } 

     currentExpandedIndex = (shouldCollapse && indexPath.row > currentExpandedIndex) ? indexPath.row - [[subItems objectAtIndex:currentExpandedIndex] count] : indexPath.row; 

     [self expandItemAtIndex:currentExpandedIndex]; 
    } 

    [self.tableView endUpdates]; 

} 

- (void)expandItemAtIndex:(int)index { 
    NSLog(@"expading"); 
    NSMutableArray *indexPaths = [NSMutableArray new]; 
    NSArray *currentSubItems = [subItems objectAtIndex:index]; 
    int insertPos = index + 1; 
    for (int i = 0; i < [currentSubItems count]; i++) { 
     [indexPaths addObject:[NSIndexPath indexPathForRow:insertPos++ inSection:0]]; 
    } 
    [self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade]; 

    [indexPaths release]; 
} 

- (void)collapseSubItemsAtIndex:(int)index { 
    NSLog(@"collapsing"); 
    NSMutableArray *indexPaths = [NSMutableArray new]; 
    for (int i = index + 1; i <= index + [[subItems objectAtIndex:index] count]; i++) { 
     [indexPaths addObject:[NSIndexPath indexPathForRow:i inSection:0]]; 
    } 
    [self.tableView deleteRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade]; 
    [indexPaths release]; 
} 

由於

Answer 1

該單元正被重複使用。您需要爲該樣式創建一個新的單元實例（然後可以重用）。爲不同的樣式創建單獨的單元格並返回每個樣式。

if (isChild) { 
    cell = [tableView dequeueReusableCellWithIdentifier:ChildCellIdentifier]; 
    if (cell == nil) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ChildCellIdentifier]; 
    } 
} 
else { 
    cell = [tableView dequeueReusableCellWithIdentifier:ParentCellIdentifier]; 
    if (cell == nil) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ParentCellIdentifier]; 
    } 
}