将屏蔽应用于iOS中的blurView

我有一张图像，我正尝试将堆叠模糊应用于并希望从我创建的.png文件应用一个屏蔽以查看下面的清晰图像。我需要下面的图片才能在给定时间更改，但blurView和mask保持静态。这是我正在使用的代码，但我没有在模糊中看到蒙版图像。将屏蔽应用于iOS中的blurView

- (void)viewDidLoad 
    { 
     [super viewDidLoad]; 

    UIImageView *imageview = [UIImageView new]; 
    [imageview setFrame:[self.view bounds]]; 
    [imageview setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight]; 
    [imageview setImage:[UIImage imageNamed:@"myImage.jpg"]]; 
    [imageview setContentMode:UIViewContentModeScaleAspectFill]; 
    [self.view addSubview:imageview]; 

    [self setBlurView:[AMBlurView new]]; 
    [[self blurView] setFrame:CGRectMake(0.f, 0.f, [self.view bounds].size.width, [self.view bounds].size.height)]; 
    [[self blurView] setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight]; 

    [self.view addSubview:[self blurView]]; 

    imageview.image = [self maskImage:imageview.image withMask:[UIImage imageNamed:@"mask"]]; 

} 

- (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage { 

    CGImageRef imgRef = [image CGImage]; 
    CGImageRef maskRef = [maskImage CGImage]; 
    CGImageRef actualMask = CGImageMaskCreate(CGImageGetWidth(maskRef), 
               CGImageGetHeight(maskRef), 
               CGImageGetBitsPerComponent(maskRef), 
               CGImageGetBitsPerPixel(maskRef), 
               CGImageGetBytesPerRow(maskRef), 
               CGImageGetDataProvider(maskRef), NULL, false); 
    CGImageRef masked = CGImageCreateWithMask(imgRef, actualMask); 
    return [UIImage imageWithCGImage:masked]; 

}

来源

2013-09-21 Jared Gross

试试这个可可控制的模糊图像

COCOA CONTROL

更新回答

- (void)viewDidLoad 
    { 
     [super viewDidLoad]; 

    UIImageView *imageview = [UIImageView new]; 
    [imageview setFrame:[self.view bounds]]; 
    [imageview setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight]; 
    [imageview setImage:[UIImage imageNamed:@"myImage.jpg"]]; 
    [imageview setContentMode:UIViewContentModeScaleAspectFill]; 
imageview.image = [self maskImage:imageview.image withMask:[UIImage imageNamed:@"mask"]]; 
    [self.view addSubview:imageview]; 

    [self setBlurView:[AMBlurView new]]; 
    [[self blurView] setFrame:CGRectMake(0.f, 0.f, [self.view bounds].size.width, [self.view bounds].size.height)]; 
    [[self blurView] setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight]; 

    [self.view addSubview:[self blurView]]; 



} 

- (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage { 

    CGImageRef imgRef = [image CGImage]; 
    CGImageRef maskRef = [maskImage CGImage]; 
    CGImageRef actualMask = CGImageMaskCreate(CGImageGetWidth(maskRef), 
               CGImageGetHeight(maskRef), 
               CGImageGetBitsPerComponent(maskRef), 
               CGImageGetBitsPerPixel(maskRef), 
               CGImageGetBytesPerRow(maskRef), 
               CGImageGetDataProvider(maskRef), NULL, false); 
    CGImageRef masked = CGImageCreateWithMask(imgRef, actualMask); 
    return [UIImage imageWithCGImage:masked]; 

}

来源

2013-09-21 06:22:35 user1673099

这是很多比我更需要。我仍然对开发非常陌生，并且只是从.png中屏蔽blurView的效果。我在这里找到了这个项目[https://github.com/NickTitle/iOS7-Trans-Blur]，但它涉及到使用一个滑块来达到这个效果，并且在一整天之后，我仍然无法将它解压缩到我不幸的是需要什么。 –

我正在尝试创建UIImage的静态过滤器，它由高斯模糊效果和alpha遮罩组成。这样除了mask.png中提供的蒙版形状以外，整个图像都会模糊不清。如果你看这里：[https://github.com/JagCesar/iOS-blur]这几乎正是我想要做的，但我想在模糊的矩形中切出一个面具 –

不。在模糊的矩形内我想从我的PNG文件中删除一个形状，所以它就像一个窗口 –

将屏蔽应用于iOS中的blurView

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