UICollectionViewCell带圆角和投影不起作用

问题描述

我希望我的UICollectionViewCells有圆角和阴影，但我遇到了一个问题，似乎我只能有一个或另一个，但不是两个。

I want my UICollectionViewCells to have rounded corners and drop shadows but I have run into a problem where it seems I can only have one or the other, but not both.

为了绕过角落我在单元格的初始化中使用此代码：

To just round the corners I use this code in the initialization of the cell:

CALayer *layer = [self layer];
[layer setCornerRadius:4];
[layer setRasterizationScale:[[UIScreen mainScreen] scale]];
[layer setShouldRasterize:YES];

要添加投影，我在单元格的初始化中使用此代码：

To just add a drop shadow I use this code in the initialization of the cell:

CALayer *layer = [self layer];
[layer setMasksToBounds:NO];
[layer setRasterizationScale:[[UIScreen mainScreen] scale]];
[layer setShouldRasterize:YES];
[layer setShadowColor:[[UIColor blackColor] CGColor]];
[layer setShadowOffset:CGSizeMake(0.0f,0.5f)];
[layer setShadowRadius:8.0f];
[layer setShadowOpacity:0.2f];
[layer setShadowPath:[[UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:layer.cornerRadius] CGPath]];

要尝试使用圆角和投影，我在单元格的初始化中使用此代码：

To try and have rounded corners and a drop shadow I use this code in the initialization of the cell:

CALayer *layer = [self layer];
[layer setMasksToBounds:NO];
[layer setCornerRadius:4];
[layer setRasterizationScale:[[UIScreen mainScreen] scale]];
[layer setShouldRasterize:YES];
[layer setShadowColor:[[UIColor blackColor] CGColor]];
[layer setShadowOffset:CGSizeMake(0.0f,0.5f)];
[layer setShadowRadius:8.0f];
[layer setShadowOpacity:0.2f];
[layer setShadowPath:[[UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:layer.cornerRadius] CGPath]];

但这只会产生投影。

这是一个错误还是我做错了什么？

Is this a bug or am I doing something wrong?

推荐答案

为我工作很棒：

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
    {
        ...
        cell.layer.masksToBounds = YES;
        cell.layer.cornerRadius = 6;
        ...
        return cell;
    }

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