UITableViewCell自定义selectedBackgroundView问题

Question

所以我面临着在我的内部设置custum selectedBackgroundView的问题UITableViewCell.

我的单元格contentView基本上是一个UIView(frame = 0,0,80,70),黑色背景和UIImageView子视图.

imageView的 contentMode = UIViewContentModeScaleAspectFit;

这看起来像这样:

现在我像这样设置selectedBackgroundView:

    //set the custom selected color
    UIView *bgColorView                 = [[UIView alloc] init];
    bgColorView.backgroundColor         = MY_TINT_COLOR;
    CGColorRef darkColor                = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha: 0.25].CGColor;
    CGColorRef lightColor               = [self.view.backgroundColor colorWithAlphaComponent:0.0].CGColor;
    //setting some gradients here
    //should not be relevant for the question
    [cell setSelectedBackgroundView:bgColorView];

这导致如下所示:

我现在的问题是selectedBackgroundView隐藏黑色部分的原因是contentView什么？

我已经尝试bgColorView用一个帧开始初始化我x = 80,但这并没有改变任何东西.

此外,我曾试图显式设置backgroundColor的imageView黑色,同样的结果.

什么可能导致这种行为？

Answer 1

下图给出了单元结构的概念.选定的背景视图将隐藏内容视图

因此,您可以尝试将单元格的背景颜色设置为黑色.您的自定义单元格看起来像这样

    self.backgroundColor = [UIColor blackColor]; // Gives black background for you


    // Set selected background view
    UIView *backgroundView = [[UIView alloc]initWithFrame:self.bounds];
    backgroundView.layer.borderColor = [[UIColor colorWithRed:0.529 green:0.808 blue:0.922 alpha:1]CGColor];
    backgroundView.layer.borderWidth = 10.0f;
    self.selectedBackgroundView = backgroundView;
    [backgroundView release];

    // Set the content view
    CGRect frame  = CGRectMake(self.bounds.origin.x+5, self.bounds.origin.y+5, self.bounds.size.width-10, self.bounds.size.height-10);
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
    self.imageView = imageView;
    [imageView release];
    self.imageView.contentMode = UIViewContentModeScaleAspectFill ;
    self.imageView.clipsToBounds = YES;
    [self.contentView addSubview:self.imageView];