单元可重用导致在iOS5中重新获取数据

我为我的表视图使用自定义单元格。在我的单元格中，我有imageview &按钮。我在单行中显示3个图像。当我选择按钮，我使用复选框图像&当再次点击按钮，它取消选择复选框图像。当我选择第一行中的按钮滚动tabelview，它也检查第3或第4行上的按钮。我认为这是由于细胞的重用。这里是我的cellForRowAtIndexPath代码：单元可重用导致在iOS5中重新获取数据

- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"LibraryElementsCell"; 
    LibraryElementsCell *cell = (LibraryElementsCell *) [tableView1 dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (cell == nil) 
    { 
     NSArray *cellArray=[[NSBundle mainBundle] loadNibNamed:@"LibraryElementsCell" owner:self options:nil]; 
     cell=[cellArray objectAtIndex:0]; 

     [cell.firstElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.firstElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     [cell.secondElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.secondElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     [cell.thirdElementButton setImage:[UIImage imageNamed:CHECKBOX_UNCHECKED_IMAGE] forState:UIControlStateNormal]; 
     [cell.thirdElementButton addTarget:self action:@selector(checkBoxSelectedOnLibraryElement:event:) forControlEvents:UIControlEventTouchUpInside]; 

     tableView1.backgroundColor = [UIColor clearColor]; 
     tableView1.separatorStyle = UITableViewCellSeparatorStyleNone; 
     cell.selectionStyle = UITableViewCellSelectionStyleNone; 
    } 

    NSMutableArray *tempArray = [self.categoriesArray objectAtIndex:indexPath.section]; 

    int row = indexPath.row * 3; 

    if (row <= [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row]; 
     cell.firstElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 

    if ((row + 1) < [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row+1]; 
     cell.secondElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 
    else { 
     [cell.secondElementImageView setHidden:YES]; 
     [cell.secondElementButton setHidden:YES]; 
    } 

    if ((row + 2) < [tempArray count]) 
    { 
     LibraryElement *libElement = [tempArray objectAtIndex:row+2]; 
     cell.thirdElementImageView.image = [UIImage imageNamed:libElement.imageName]; 
    } 
    else { 
     [cell.thirdElementImageView setHidden:YES]; 
     [cell.thirdElementButton setHidden:YES]; 
    } 

    return cell; 
}

而且有时隐藏按钮&的ImageView被meessed起来的逻辑。即使数据可用，它也会隐藏imageview &按钮。

帮助任何knid高度appreciated.Thanks

来源

2012-06-14 iOSAppDev

您需要每次都刷新电池组件例如创建这需要数据的单元格内的刷新方法，并绘制细胞成分

refreshCellView：让细胞
后：（NSDictionary的）数据

和电话的cellForRowAtIndexPath里面refreshCellView

来源

2012-06-14 12:08:45

单元可重用导致在iOS5中重新获取数据

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