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

    static NSString *customCell_Identifier = @"CustomCell";
    ThreePartitionCells *cell = (ThreePartitionCells *)[tableView dequeueReusableCellWithIdentifier:customCell_Identifier];    

    if (cell == nil) 
   {
      cell = (ThreePartitionCells *)[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:customCell_Identifier] autorelease];
      NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ThreePartitionCells" owner:self options:nil];
      cell =  [nib objectAtIndex:0];     
   }    

  [cell setSelectionStyle:UITableViewCellSelectionStyleNone];   
   NSLog(@"%@", [arrActivityList objectAtIndex:[indexPath row]]);

   NSString *strTemp = [NSString stringWithFormat:@"%@-%@", [[[[[arrActivityList objectAtIndex:[indexPath row]] objectForKey:@"ITEMS"] objectForKey:@"Area"] objectForKey:@"AREANAME"] objectForKey:@"text"], [[[[[[[arrActivityList objectAtIndex:[indexPath row]] objectForKey:@"ITEMS"] objectForKey:@"Area"] objectForKey:@"ITEMS"] objectForKey:@"Bin"] objectForKey:@"BIN_BARCODE"] objectForKey:@"text"]  ];

  cell.lblProductName.text = strTemp;
  cell.lblExpectedCount.text = [[[arrActivityList objectAtIndex:[indexPath row]]objectForKey:@"ProductName"]objectForKey:@"text" ];

  cell.lblCounted.text = [[[arrActivityList objectAtIndex:[indexPath row]] objectForKey:@"Status"] objectForKey:@"text"];

  [cell.lblProductName setFont:[UIFont fontWithName:@"Helvetica" size:13.0]];
  [cell.lblCounted setFont:[UIFont fontWithName:@"Helvetica" size:13.0]];

  return cell;
 }

我在分析这样的项目时收到警告“存储到‘单元格’的值永远不会被读取”。好吧！代码正在使用单元格，但在 if 块之外。我想消除这个警告！

有人可以帮我吗？

提前致谢 ：）

4

1 回答 1

2

这里的问题： 

if (cell == nil) 
   {
  cell = (ThreePartitionCells *)[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:customCell_Identifier] autorelease];

  NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ThreePartitionCells" owner:self options:nil];

  cell =  [nib objectAtIndex:0]; 
   }

您从自定义类初始化单元格，然后从笔尖分配给单元格，这样您就失去了对第一个单元格的控制并且您没有使用第一个单元格。

尝试这个： 

if (!cell){
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ThreePartitionCells"
                                                 owner:self
                                               options:nil];
    for (id obj in nib) {
        if ([obj isKindOfClass:[ThreePartitionCells class]]) {
            cell = (ThreePartitionCells *)obj;
            break;
        }
    }
}

或者： 

if (!cell){
    NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ThreePartitionCells"
                                                 owner:self
                                               options:nil];
    cell = nib[0];
}

或者：

if (!cell){
    cell = [[[ThreePartitionCells alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:customCell_Identifierr] autorelease];
}
于 2013-11-11T07:44:07.150 回答