UIImageView實現(xiàn)陰影處理

UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 50, 50)];;

? ? imageView.backgroundColor = [UIColor whiteColor];

? ? //添加邊框

? ? CALayer * layer = [imageView layer];

? ? layer.borderColor = [[UIColor yellowColor] CGColor];

? ? layer.borderWidth = 5.0f;

? ? //添加四個邊陰影

? ? imageView.layer.shadowColor = [UIColor redColor].CGColor;

? ? imageView.layer.shadowOffset = CGSizeMake(0, 0);

? ? imageView.layer.shadowOpacity = 0.5;

? ? imageView.layer.shadowRadius = 3;

? ? //添加兩個邊陰影

? ? imageView.layer.shadowColor = [UIColor redColor].CGColor;

? ? imageView.layer.shadowOffset = CGSizeMake(10, 1);

? ? imageView.layer.shadowOpacity = 0.5;

? ? imageView.layer.shadowRadius = 2.0;

? ? [self.view addSubview:imageView];