Question

For some reason this is outputting ‘null’. The code seems to be right according to what everyone else has been saying about MediaMetaData, but unlike them, all i get out is the null?

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

NSDictionary *metadata = [info objectForKey:UIImagePickerControllerMediaMetadata];

NSLog(@"%@", metadata);

}

Edit: I’m using a UIImagePickerController, which gets the image from the iPhone simulator’s PhotoLibrary.

Also I’m using iOS 4.3

When I use NSLog(@”%@”, info); that outputs:

UIImagePickerControllerMediaType = “public.image”;

UIImagePickerControllerOriginalImage =
“”;

UIImagePickerControllerReferenceURL =
“assets-library://asset/asset.PNG?id=1000000001&ext=PNG”;

I’ve tried different pictures, different filetypes. No change.

Answer 1

Excerpt for UIImagePickerControllerMediaMetadata from the documentation,

This key is valid only when using an
image picker whose source type is set
to
UIImagePickerControllerSourceTypeCamera,
and applies only to still images.

You will have to use the Asset Library for this. Specifically build an ALAsset instance and access the metadata property of its defaultRepresentation.