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
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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快网idc。
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