iOS实现毛玻璃效果(无需要第三方) - IOS - 服务器之家

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这篇文章主要为大家详细介绍了iOS实现毛玻璃效果,无需要第三方,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

本文实例分享两种ios毛玻璃效果设置的方法,不需要任何第三方,先看效果:

原图:

iOS实现毛玻璃效果(无需要第三方)

方法一(ios8系统方法):

iOS实现毛玻璃效果(无需要第三方)

方法二:

iOS实现毛玻璃效果(无需要第三方)

下面是示例代码:

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#import "viewcontroller.h"
 
@interface viewcontroller ()
{
 uiimageview *_imageview;
}
@end
 
@implementation viewcontroller
 
- (void)viewdidload {
 [super viewdidload];
 _imageview = [[uiimageview alloc]initwithframe:self.view.bounds];
 _imageview.image = [uiimage imagenamed:@"1.jpg"];
 [self.view addsubview:_imageview];
 
 //方法一:系统方法,ios8及以上可用
 if (!uiaccessibilityisreducetransparencyenabled()) {
 uiblureffect *blureffect = [uiblureffect effectwithstyle:uiblureffectstyledark];
 uivisualeffectview *blureffectview = [[uivisualeffectview alloc]initwitheffect:blureffect];
 blureffectview.frame = _imageview.bounds;
 [_imageview addsubview:blureffectview];
 }
 
 
 //方法二:core image
 uiimageview *blurimageview = [[uiimageview alloc]initwithframe:_imageview.bounds];
 blurimageview.image = [self blur:[uiimage imagenamed:@"1.jpg"]];
 [_imageview addsubview:blurimageview];
}
 
//生成一张毛玻璃图片
- (uiimage*)blur:(uiimage*)theimage
{
 cicontext *context = [cicontext contextwithoptions:nil];
 ciimage *inputimage = [ciimage imagewithcgimage:theimage.cgimage];
 
 cifilter *filter = [cifilter filterwithname:@"cigaussianblur"];
 [filter setvalue:inputimage forkey:kciinputimagekey];
 [filter setvalue:[nsnumber numberwithfloat:15.0f] forkey:@"inputradius"];
 ciimage *result = [filter valueforkey:kcioutputimagekey];
 
 cgimageref cgimage = [context createcgimage:result fromrect:[inputimage extent]];
 
 uiimage *returnimage = [uiimage imagewithcgimage:cgimage];
 cgimagerelease(cgimage);
 return returnimage;
}
 
- (void)didreceivememorywarning {
 [super didreceivememorywarning];
 // dispose of any resources that can be recreated.
}
 
@end

具体效果和参数自行研究吧!

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原文链接:https://blog.csdn.net/yibaozhifu/article/details/50850844