选定的 UIButton 在选定的 UITableViewCell 内消失

问题描述

我有一个表，我有它的 cellForRowAtIndexPath 委托，并且我在该方法中创建了 UITableViewCell 的实例，我将其返回.在 cellForRowAtIndexPath 的某个地方，我还将 UIButton 添加到该单元格的 cell.contentView 中.一切正常，直到我选择带有按钮的单元格.单元格将颜色更改为蓝色(没关系)， uibutton 也将其颜色更改为蓝色.现在，如果我单击选定单元格内的 UIButton，它就会消失！哇，好奇怪，怎么解决?当我单击它时，我希望选定单元格内的 UIButton 保持不变.

I have a table, I have cellForRowAtIndexPath delegate for it and I have instance of UITableViewCell being created inside that method, which I return. Somewhere in cellForRowAtIndexPath I also add UIButton to cell.contentView of that cell. It all works fine, until I select that cell with button in it. The cell changes color to blue (which is ok), uibutton changes its color to blue too. Now, if I click on that UIButton inside selected cell, it just disappears! Wow, that's weird, how do I fix it? I want UIButton inside selected cell to stay, when I click it.

包括我的 cellForRowAtIndexPath 实现

included my cellForRowAtIndexPath implementation

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


    for (UIView *view in cell.contentView.subviews)
      [view removeFromSuperview];


     if (cell == nil) {
      cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero 
                reuseIdentifier: sectionsTableIdentifier] autorelease];

     }

     CGRect newIconRect = CGRectMake(276, 40, 29, 29);
      UIButton *newIcon = [[UIButton alloc] initWithFrame:newIconRect];
      [newIcon setImage:[UIImage imageNamed:@"mynewicon.png"] forState:UIControlStateNormal];
      [cell.contentView addSubview:newIcon];
      [newIcon release];


    return cell;

    }

推荐答案

我在 OS 4.0 beta 上注意到了一个类似的问题，我在 UITableViewCell 中使用 setImage:forState:UIControlStateNormal 有一个 UIButton.当我在选择一行并按下另一个表视图后返回表视图时，该按钮将消失.为了克服这个问题，我也在图像上设置了图像:forState:UIControlStateHighlighted.我不确定这是否会解决您的特定问题，但它确实对我有用.我认为在 didSelectRowAtIndexPath: 中设置 button.highlighted=NO 也可以，但我没有尝试.

I noticed a similar issue on OS 4.0 beta where I had a UIButton in a UITableViewCell with setImage:forState:UIControlStateNormal. The button would disappear when I would return to the table view after selecting a row and pushing another table view. To overcome this, I setImage:forState:UIControlStateHighlighted on the image as well. I'm not sure if this would resolve your particular issue, but it did for me. I think also setting the button.highlighted=NO in didSelectRowAtIndexPath: might have worked as well, but I didn't try it.

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