如何确定使用UIImagePickerController捕获的图像是JPEG还是HEIF？

Question

I have set the imageExportPreset property of the UIImagePickerController to use current. How can I determine if the image captured is HEIF or JPEG?

Answer 1

Did you try something like the following?

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
    NSURL *assetURL = info[UIImagePickerControllerReferenceURL];

    NSString *extension = [assetURL pathExtension];
    CFStringRef imageUTI = (UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension,(__bridge CFStringRef)extension , NULL));

    if (UTTypeConformsTo(imageUTI, kUTTypeJPEG))
    {
        // JPEG
    }
    else
    {
        NSLog(@"Unhandled Image UTI: %@", imageUTI);
    }
}