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：
方法一（ios8系统方法）：
方法二：
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！
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/yibaozhifu/article/details/50850844
