廢話不多說，實現簡單的高斯模糊的效果代碼：
UIView *bgview= [[UIViewalloc]initWithFrame:self.view.frame];// bgview.backgroundColor = [UIColor blackColor];// bgview.alpha = 0.9; bgview.tag =10086; [self.viewaddSubview:bgview]; UIBlurEffect *blur = [UIBlurEffecteffectWithStyle:UIBlurEffectStyleLight]; UIVisualEffectView *effectview = [[UIVisualEffectViewalloc] initWithEffect:blur]; effectview.frame =self.view.frame; [bgview addSubview:effectview];
這寫代碼只是簡單的實現高斯模糊。關于消除，把它remove就行了。
關于圖片的高斯模糊，首先拿到圖片：
CIContext *context = [CIContext contextWithOptions:nil]; CIImage *inputImage = [[CIImage alloc] initWithImage:[UIImage imageNamed:@"1.png"]]; // create gaussian blur filter CIFilter *filter = [CIFilter filterWithName:@"CIGaussianBlur"]; [filter setValue:inputImage forKey:kCIInputImageKey]; [filter setValue:[NSNumber numberWithFloat:10.0] forKey:@"inputRadius"]; // blur image CIImage *result = [filter valueForKey:kCIOutputImageKey]; CGImageRef cgImage = [context createCGImage:result fromRect:[result extent]]; UIImage *image = [UIImage imageWithCGImage:cgImage]; CGImageRelease(cgImage); self.mainImageView.image = image;
以上所述是小編給大家介紹的iOS實現背景高斯模糊效果，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對武林網網站的支持！
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