添加圓角到的UIImageView和顯示陰影效果

Question

我有同樣的問題，因爲這裏的鏈接： Can't add a corner radius and a shadow

如果我把maskToBounds = YES，我得到的圓角，但沒有影子 如果我把maskToBounds = NO ，我得到了影子，但沒有圓角。

然後我按照上面那個鏈接中的說明，設置maskToBounds = NO，「而是設置圓角半徑，並用圓角矩形設置陰影的貝塞爾路徑，保持二者的半徑相同。但是，我沒有找到圓角，也沒有得到任何影子！ （即沒有陰影的方形圖像）你能幫我解決這個問題嗎？我不知道我做錯了什麼。提前致謝。

self.userImageView.backgroundColor = [UIColor redColor]; 
self.userImageView.clipsToBounds = NO; 
self.userImageView.contentMode = UIViewContentModeCenter; 
self.userImageView.layer.masksToBounds = NO; 

self.userImageView.layer.borderWidth = 1; 
self.userImageView.layer.borderColor = [[UIColor grayColor] CGColor]; 

self.userImageView.layer.shadowOpacity = 1; 
self.userImageView.layer.shadowColor = [[UIColor blackColor] CGColor]; 
self.userImageView.layer.shadowRadius = 8.0f; 
self.userImageView.layer.shadowOffset = CGSizeMake(-3, 0); 
self.userImageView.layer.shouldRasterize = YES; 

self.userImageView.layer.shadowPath = [[UIBezierPath bezierPathWithRoundedRect:[self.userImageView bounds] cornerRadius:10.0f] CGPath]; 

[self addSubview:self.userImageView]; 

Answer 1

不幸的是，我不認爲UIImageView同時支持圓角和陰影。

但是，您可以在UIImageView的超級視圖中製作陰影。

CGFloat cornerRadius = 3.0 

UIView *container = [[UIView alloc] initWithFrame:aRect]; 
container.layer.shadowOffset = CGSizeMake(0, 0); 
container.layer.shadowOpacity = 0.8; 
container.layer.shadowRadius = 5.0; 
container.layer.shadowColor = [UIColor redColor].CGColor; 
container.layer.shadowPath = [[UIBezierPath bezierPathWithRoundedRect:container.bounds cornerRadius:cornerRadius] CGPath]; 

self.userImageView.layer.cornerRadius = cornerRadius; 
self.userImageView.layer.masksToBounds = YES; 
self.userImageView.frame = container.bounds; 
[container addSubview:self.userImageView]; 
[self addSubview:container];