选定的 UIButton 在选定的 UITableViewCell 内消失

Selected UIButton disappears inside selected UITableViewCell(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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