Question

当我尝试实现CIHueAdjust时出现错误。该应用程序终止时出现如下错误： - [CIImage doubleValue]：无法识别的选择器发送到实例0xd6606d0

以下是整个项目：owolf.net/uploads/StackOverflow/HueAdjustProject.zip

这是.m代码：

- (void)viewDidLoad
{
    context = [CIContext contextWithOptions:nil];
    hueFilter = [CIFilter filterWithName:@"CIHueAdjust"];
    inputCGImage = imageView.image.CGImage;
    [super viewDidLoad];
}

- (IBAction)hueSliderValueChanged:(id)sender {
    [hueFilter setValue:[NSNumber numberWithFloat:hueSlider.value] forKey: @"inputAngle"];
    [self filterImage];
}

-(void)filterImage {
    adjustedImage = [CIImage imageWithCGImage:inputCGImage];
    [hueFilter setValue:adjustedImage forKey:@"inputAngle"];
    adjustedImage = [hueFilter outputImage];
    CGImageRef cgimg = [context createCGImage:adjustedImage fromRect:[adjustedImage extent]];
    adjustedUIImage = [UIImage imageWithCGImage:cgimg];
    CGImageRelease(cgimg);
    [imageView setImage:adjustedUIImage]; 
}

错误日志：

2012-08-16 17：14：02.062 HueAdjustProject [3333：707] - [CIImage doubleValue]：无法识别的选择器发送到实例0xd6606d0 2012-08-16 17：14：02.065 HueAdjustProject [3333：707] *由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：' - [CIImage doubleValue]：无法识别的选择器发送到实例0xd6606d0' * 第一次抛出调用堆栈：（0x3544088f 0x377e7259 0x35443a9b 0x35442915 0x3539d650 0x36b09a3f 0xed0c5 0xed017 0x3539a3fd 0x32e8fe07 0x32e8fdc3 0x32e8fda1 0x32e8fb11 0x33085d07 0x32e8f6a5 0x32e8e8a1 0x32e8e319 0x32e74695 0x32e73f3b 0x3703322b 0x35414523 0x354144c5 0x35413313 0x353964a5 0x3539636d 0x37032439 0x32ea2cd5 0xecb17 0xecabc）终止调用抛出异常

Answer 1

[hueFilter setValue:adjustedImage forKey:@"inputAngle"];

应该是

[hueFilter setValue:adjustedImage forKey:@"inputImage"];

CIHueAdjust核心图像过滤器设置

1 个答案: