iOS 毛玻璃

UIImageView  * imageView    =   [[UIImageView alloc]initWithFrame:CGRectMake(0, 0,[UIScreen mainScreen].bounds.size.width,200)];
    imageView.image             =   [UIImage imageNamed:@"你的图片.jpg"];
    [self.view addSubview:imageView];
    
    //  创建需要的毛玻璃特效类型
    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleExtraLight];
    
    [UIVibrancyEffect  effectForBlurEffect:blurEffect];
    //  毛玻璃view 视图
    UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
    //添加到要有毛玻璃特效的控件中
    effectView.frame = imageView.bounds;
    //设置模糊透明度
    effectView.alpha = .9f;
    
    [imageView addSubview:effectView];