iOS8 只带毛玻璃效果API(UIVisualEffectView)

01.typedef NS_ENUM(NSInteger, UIBlurEffectStyle) {

02.UIBlurEffectStyleExtraLight,

03.UIBlurEffectStyleLight,

04.UIBlurEffectStyleDark

05.} NS_ENUM_AVAILABLE_IOS(8_0);

06. 

07.NS_CLASS_AVAILABLE_IOS(8_0) @interface UIVisualEffect : NSObject <NSCopying, NSSecureCoding> @end

08. 

09./* UIBlurEffect will provide a blur that appears to have been applied to the content layered behind the UIVisualEffectView. Views added to the contentView of a blur visual effect are not blurred themselves. */

10.NS_CLASS_AVAILABLE_IOS(8_0) @interface UIBlurEffect : UIVisualEffect

11.+ (UIBlurEffect *)effectWithStyle:(UIBlurEffectStyle)style;

12.@end

13. 

14./* UIVibrancyEffect amplifies and adjusts the color of content layered behind the view, allowing content placed inside the contentView to become more vivid. It is intended to be placed over, or as a subview of, a UIVisualEffectView that has been configured with a UIBlurEffect. This effect only affects content added to the contentView. Because the vibrancy effect is color dependent, subviews added to the contentView need to be tintColorDidChange aware and must be prepared to update themselves accordingly. UIImageView will need its image to have a rendering mode of UIImageRenderingModeAlwaysTemplate to receive the proper effect.

15.*/

16.NS_CLASS_AVAILABLE_IOS(8_0) @interface UIVibrancyEffect : UIVisualEffect

17.+ (UIVibrancyEffect *)effectForBlurEffect:(UIBlurEffect *)blurEffect;

18.@end

19. 

20.NS_CLASS_AVAILABLE_IOS(8_0) @interface UIVisualEffectView : UIView <NSSecureCoding>

21.@property (nonatomic, retain, readonly) UIView *contentView; // Do not add subviews directly to UIVisualEffectView, use this view instead.

22.@property (nonatomic, copy, readonly) UIVisualEffect *effect;

23.- (instancetype)initWithEffect:(UIVisualEffect *)effect NS_DESIGNATED_INITIALIZER;

24.@end

@测试代码:

view sourceprint?

01.// 图片

02.UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 100, 300, 400)];

03.[imageView setImage:[UIImage imageNamed:@"IMG_0015.JPG"]];

04.[self.view addSubview:imageView];

05. 

06.// blur效果

07.self.visualEfView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleLight]];

08._visualEfView.frame = CGRectMake(0, 0, 300, 400);

09._visualEfView.alpha = 1.0;

10.[imageView addSubview:_visualEfView];
学习下。