typedef NS_ENUM(NSInteger, UIBlurEffectStyle) { UIBlurEffectStyleExtraLight, UIBlurEffectStyleLight, UIBlurEffectStyleDark } NS_ENUM_AVAILABLE_IOS(8_0); UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark]; UIVisualEffectView *blurEffectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect]; blurEffectView.frame = self.imageView.bounds; [self.imageView insertSubview:blurEffectView atIndex:0];
未处理效果
UIBlurEffectStyleLight
UIBlurEffectStyleExtraLight
UIBlurEffectStyleDark
原文地址:http://blog.csdn.net/xietao3/article/details/39398403