iOS 8 模糊視圖(毛半透明效果)的簡單實現UIVisualEffectView

iOS 8 模糊視圖(毛半透明效果)的簡單實現UIVisualEffectView

在需要模糊的UIView上，添加一個UIVisualEffectView對象即可。

效果如：

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imageview.contentMode =UIViewContentModeScaleAspectFit;

imageview.userInteractionEnabled =YES;

[self.viewaddSubview:imageview];

UIBlurEffect *blur = [UIBlurEffecteffectWithStyle:UIBlurEffectStyleLight];

UIVisualEffectView *effectview = [[UIVisualEffectViewalloc] initWithEffect:blur];

effectview.frame =CGRectMake(0,0, imageview.size.width/2,300);

[imageviewaddSubview:effectview];

UIButton *btn = [UIButtonbuttonWithType:UIButtonTypeSystem];

btn.frame =CGRectMake(10,50, 100, 40);

[btn setTitle:@"btn"forState:UIControlStateNormal];

[effectview.contentViewaddSubview:btn];

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