如何模糊UILabel文本
我正在试图模糊UILabel的文本没有图像模糊方法。 我发现了许多解决scheme，但最大的是有图像。 我尝试了图层的阴影function，但是这没有帮助。
你可以创build一个UILabel的子类来创build模糊效果。
这是一个锅炉模板：
BlurredUILabel.h
#import <UIKit/UIKit.h> @interface BlurredUILabel : UILabel @property (nonatomic, readwrite) IBInspectable CGFloat blurRadius; @end
BlurredUILabel.m
#import "BlurredUILabel.h" @implementation BlurredUILabel - (void)setText:(NSString *)text { super.text = text; UIGraphicsBeginImageContext(self.bounds.size); [self.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); CIFilter *blurFilter = [CIFilter filterWithName:@"CIGaussianBlur"]; [blurFilter setDefaults]; CIImage *imageToBlur = [CIImage imageWithCGImage:image.CGImage]; [blurFilter setValue:imageToBlur forKey:kCIInputImageKey]; [blurFilter setValue:@(self.blurRadius) forKey:@"inputRadius"]; CIImage *outputImage = blurFilter.outputImage; CIContext *context = [CIContext contextWithOptions:nil]; CGImageRef cgimg = [context createCGImage:outputImage fromRect:[outputImage extent]]; [self.layer setContents:(__bridge id)cgimg]; CGImageRelease(cgimg); } @end
你会这样使用它：
#import "TestViewController.h" #import "BlurredUILabel.h" @interface TestViewController () @end @implementation TestViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. BlurredUILabel *label = [[BlurredUILabel alloc] initWithFrame:CGRectMake(50, 50, 300, 50)]; label.blurRadius = 2.0; label.backgroundColor = [UIColor redColor]; label.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:35]; label.textAlignment = NSTextAlignmentCenter; label.text = @"HELLO"; [self.view addSubview:label]; label.blurRadius = 1.5; [label performSelector:@selector(setText:) withObject:@"Test new string" afterDelay:2]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end