You want to search for files and/or folders inside the current iCloud user’s cloud space allocated for your app.
OS X Developers are probably familiar with the
NSMetadataQuery class. This class allows
developers to query Spotlight items, whether they are files or
folders. In iOS, we will use this class to search for files and
folders in the iCloud space assigned to the app for the current user,
if she has set up iCloud for the iOS device on which the app is
To set up a metadata query, there are three very important things that we need to do:
We need to set the predicate of the metadata query. The predicate is the search criteria of the query. This predicate will tell the query what items we are searching for.
We also need to set the query’s search scope. In order to
search in the user’s iCloud Documents folder, we set this scope to
Otherwise, you can use the
which represents the Data folder in iCloud, a folder your app can
use to store data related to the user-created documents. Remember
that the files you store in the user’s iCloud should not be your
app’s temporary files or any other files that your app can
retrieve in some other way if those files weren’t present in the
user’s iCloud storage. Things that you store in the user’s iCloud
storage should be his or her creations.
After we start the query, ...