android - Why Images.Media.insertImage return null

Question

I have some code where I run the method MediaStore.Images.Media.insertImage (inserting it from a source not a file name), This code saves the image to the MediaStore and returns the uri of the image. I know that when it fails for any reason it will return null instead of a uri. This image has been downloaded multiple times by many people and every once in a while it will return null from this method. I have never had this happen to me so I have no idea what is going on. What are reasons why this could happen? There is another post with the same issue but the answer is a link to the source code for MediaStore but that link goes to a page saying the link is unavailable. Any help would be appreciated. Thanks.

After removing my SD card I got this error so I know that could be a reason, I'm not sure but I feel that it would also happen if the card was full. Still just wondering if there could be another reason too.

Answer 1

It seems to happen when you don't have an /sdcard/DCIM/Camera directory on some versions of Android. Creating this directory (and having the permission) solved the problem for me.