返回的图片exif信息缺失

[Fairy-happy]

返回的图片无法获取全部的exif信息

[banchichen]

@Fairy-happy 你用asset也获取不到吗？通过asset是可以获取图片的所有信息的。

[banchichen]

#263

[Fairy-happy]

看了你发的链接，能取到位置等信息，但取不到相机信息

[banchichen]

@Fairy-happy 你用系统的UIImagePickerController，能取到吗？

[Fairy-happy]

用系统的可以从info里面根据URL获取数据，asset里面没细看

[banchichen]

@Fairy-happy UIImagePickerController返回的info，我看是这样子的：

{
    UIImagePickerControllerImageURL = "file:///Users/tanzhen/Library/Developer/CoreSimulator/Devices/B7DC08D2-A6FB-4EF9-9C6E-1011139712D7/data/Containers/Data/Application/8DDBC040-A0FB-4B82-8240-2EFEC95B2D4F/tmp/F1649213-174B-47E1-8B71-DAE947504645.jpeg";
    UIImagePickerControllerMediaType = "public.image";
    UIImagePickerControllerOriginalImage = "<UIImage: 0x6080000ae580> size {4288, 2848} orientation 0 scale 1.000000";
    UIImagePickerControllerPHAsset = "<PHAsset: 0x7ffe46931460> 106E99A1-4F6A-45A2-B320-B0AD4A8E8473/L0/001 mediaType=1/0, sourceType=1, (4288x2848), creationDate=2011-03-13 00:17:25 +0000, location=1, hidden=0, favorite=0 ";
    UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=106E99A1-4F6A-45A2-B320-B0AD4A8E8473&ext=JPG";
}

你是根据UIImagePickerControllerImageURL来获取exif数据吗？

[Fairy-happy]

对

   CGImageSourceRef imageSource = CGImageSourceCreateWithURL((CFURLRef)fileUrl, NULL);
   CFDictionaryRef imageInfo = CGImageSourceCopyPropertiesAtIndex(imageSource, 0,NULL);
   NSDictionary *exifDic = (__bridge NSDictionary *)CFDictionaryGetValue(imageInfo, kCGImagePropertyTIFFDictionary) ;

[banchichen]

@Fairy-happy 好的，用这个代理方法，这个方法会返回info信息：

- (void)imagePickerController:(TZImagePickerController *)picker didFinishPickingPhotos:(NSArray<UIImage *> *)photos sourceAssets:(NSArray *)assets isSelectOriginalPhoto:(BOOL)isSelectOriginalPhoto infos:(NSArray<NSDictionary *> *)infos 

其中的info是这样的：

{
    PHImageFileOrientationKey = 0;
    PHImageFileSandboxExtensionTokenKey = "337768e585ea8914faa48e4255d71f8956fc81e4;00000000;00000000;000000000000001a;com.apple.app-sandbox.read;01;01000005;00000002006926bb;/users/tanzhen/library/developer/coresimulator/devices/b7dc08d2-a6fb-4ef9-9c6e-1011139712d7/data/media/dcim/100apple/img_0008.jpg";
    PHImageFileURLKey = "file:///Users/tanzhen/Library/Developer/CoreSimulator/Devices/B7DC08D2-A6FB-4EF9-9C6E-1011139712D7/data/Media/DCIM/100APPLE/IMG_0008.JPG";
    PHImageFileUTIKey = "public.jpeg";
    PHImageResultDeliveredImageFormatKey = 9999;
    PHImageResultIsDegradedKey = 0;
    PHImageResultIsInCloudKey = 0;
    PHImageResultIsPlaceholderKey = 0;
    PHImageResultRequestIDKey = 10;
    PHImageResultWantedImageFormatKey = 4035;
}

PHImageFileURLKey就是UIImagePickerControllerImageURL 。

[Fairy-happy]

已经找到这个方法了，经测试好用，谢谢

[luhuafei]

@Fairy-happy 能告知怎么获得的嘛？ 我这边之或得exif和jiff 等， 不能拿到iptc相关信息

[Fairy-happy]

@Fairy-happy 能告知怎么获得的嘛？ 我这边之或得exif和jiff 等， 不能拿到iptc相关信息

你具体想获得什么信息，或者你可以通过UIImagePickerControllerImageURL查找到更多信息吗