最近公司忙，沒來得及寫部落格，補發一篇UIView模糊處理的小技巧，希望大家能用得上

//定義毛玻璃效果

UIBlurEffect * blur = [UIBlurEffecteffectWithStyle:UIBlurEffectStyleDark];
UIVisualEffectView * effe = [[UIVisualEffectViewalloc]initWithEffect:blur];
effe.frame =CGRectMake(50,90, self.view.frame.size.width - 100, 400);

// 把要新增的檢視加到毛玻璃上

UIButton * btn = [[UIButtonalloc]initWithFrame:CGRectMake(50,50, 100,100)];
btn.backgroundColor = [UIColorredColor];
[effeaddSubview:btn];
[self.viewaddSubview:effe];
 

效果是列舉，有三種：

UIBlurEffectStyleExtraLight      UIBlurEffectStyleLight      UIBlurEffectStyleDark

之後還有你想把你的圖片模糊也可以這樣新增：

// 定義需要毛玻璃化的圖片

UIImageView * image = [[UIImageViewalloc]initWithImage:[UIImageimageNamed:@"2.png"]];
image.frame =CGRectMake(100,100, 100,100);

// 定義毛玻璃效果

UIBlurEffect * blur = [UIBlurEffecteffectWithStyle:UIBlurEffectStyleDark];
UIVisualEffectView * effe = [[UIVisualEffectViewalloc]initWithEffect:blur];
effe.frame =CGRectMake(50,90, self.view.frame.size.width - 100, 400);
[image addSubview:effe];
[self.viewaddSubview:image];