如何从下载的图像中获取Exif数据 [英] How to get Exif data from downloaded image

问题描述

在我的应用程序中，我需要从特定URL链接下载图像并将其分配给 UIImageView 。我没有将该图像存储到我的库中，然后在这种情况下如何获取此图像的 Exif数据（例如 EXIF_TAG_CREATE_DATE ，<$我的应用程序中有c $ c> EXIF_TAG_ARTIST 等）？

In my application , I need to download the image from particular URL Link and assign that to UIImageView. I do not store that image to my Library, then in this case how can I get the Exif data of this image (like EXIF_TAG_CREATE_DATE , EXIF_TAG_ARTIST, etc) in my app?

推荐答案

try this  

NSError *error = nil;
NSDictionary *attributes = [[NSFileManager defaultManager] 
    attributesOfItemAtPath:@"imagePath" error:&error];

if (!error) 
{
    NSLog(@"file attributes : %@",attributes);
}

and this is the result :

NSFileCreationDate = "2013-05-28 09:29:37 +0000";
NSFileExtensionHidden = 0;
NSFileGroupOwnerAccountID = 20;
NSFileGroupOwnerAccountName = staff;
NSFileModificationDate = "2013-05-28 09:29:37 +0000";
NSFileOwnerAccountID = 502;
NSFileOwnerAccountName = lerhan;
NSFilePosixPermissions = 420;
NSFileReferenceCount = 1;
NSFileSize = 1494;
NSFileSystemFileNumber = 46795419;
NSFileSystemNumber = 234881026;
NSFileType = NSFileTypeRegular;

to access any data type NSLog(@"file creation date : %@",[attributes objectForKey:@"NSFileCreationDate"]);

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