ios – 使用ALAsset从GRKPhoto获取UIImage

2023年9月14日 194次阅读

我正在使用
grabKit以允许用户将他们的Instagram,Facebook和本地图片导入我的应用程序.当照片是本地照片时出现问题.在这种情况下,我使用的方法在用户选择照片时有效.

我发现的标准代码如下：

- (void)picker:(GRKPickerViewController*)picker didSelectPhoto:(GRKPhoto *)photo{

    [popover dismissPopoverAnimated:YES];

    GRKImage *originalImage = [photo originalImage];

    NSLog(@" the URL of the original image of the first selected photo is : %@", originalImage.URL );
    NSLog(@" the size of this image is : %d x %d ", originalImage.width, originalImage.height );

    // If the url begins with assets-library://
    if ( [[originalImage.URL absoluteString] hasPrefix:@"assets-library://"] ){

        // Instantiate a library
        ALAssetsLibrary* library = [[ALAssetsLibrary alloc] init];

        // Ask for the "Asset" for the URL. An asset is a representation of an image in the Photo application.
        [library assetForURL:originalImage.URL
                 resultBlock:^(ALAsset *asset) {

                     // Here, we have the asset, let's retrieve the image from it
                     CGImageRef imgRef = [[asset defaultRepresentation] fullResolutionImage];

                     // From the CGImage, let's build an UIImage
                     UIImage * fullResImage = [UIImage imageWithCGImage:imgRef];

                     NSLog(@" The UIImage for URL %@ is %@", originalImage.URL, fullResImage);

                 } failureBlock:^(NSError *error) {
                     // Something wrong happened.
                 }];
}

通过做一些调试,我发现当我尝试从ALAsset,ergo中获取CGImageRef时,应用程序崩溃了：CGImageRef imgRef = [[asset defaultRepresentation] fullResolutionImage] ;.

如果它可以帮助解决我的问题,我在控制台中收到的消息是：

*** Terminating app due to uncaught exception 'CALayerInvalidGeometry', reason: 'CALayer position contains NaN: [nan 653]'

*** First throw call stack:

(0x42f8012 0x2ad9e7e 0x42f7deb 0x161ee0b 0x161efa5 0x161f6eb 0x174fe53 0x18191c0 0x181941a 0x21fad 0x219f1 0x13de70 0xf3c03 0x1c0f42f 0x1c21182 0x1c21394 0x2aed705 0x181b93c 0x181b9ac 0x2aed705 0x181b93c 0x181b9ac 0x19d51d3 0x42c0afe 0x42c0a3d 0x429e7c2 0x429df44 0x429de1b 0x3b9d7e3 0x3b9d668 0x170dffc 0x69432 0x30f5)

libc++abi.dylib: terminate called throwing an exception

感谢您的时间和兴趣！

最佳答案 通常CALayerInvalidGeometry和NAN是由CALayer帧的无效设置产生的,而CALayer帧的设置又可以由view.frame设置.也许在某个地方,层位置/变换设置不正确.由于你没有直接这样做,它似乎是Grabkit的一个错误.归档
here.

你可以考虑进入CGImageRef imgRef = [[asset defaultRepresentation] fullResolutionImage];使用F7向Grabkit提供有关崩溃的更多信息.

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