List files

You can list all of the objects uploaded under a given prefix by setting the pageSize. If the pageSize is set lower than the total file size available, A single Storage.list call only returns a subset of all the files. To list all the files with multiple calls, the user can use the nextToken from the previous call response.

This will list all public files:

1StoragePagedListOptions options = StoragePagedListOptions.builder()
2    .setPageSize(1000)
3    .build();
4
5Amplify.Storage.list(
6    "",
7    options,
8    result -> {
9        for (StorageItem item : result.getItems()) {
10            Log.i("MyAmplifyApp", "Item: " + item.getKey());
11        }
12        Log.i("MyAmplifyApp", "Next Token: " + result.getNextToken());
13    },
14    error -> Log.e("MyAmplifyApp", "List failure", error);
15);

Note: The range of pageSize can be from 1 - 1000.

You can also list private or protected files by passing options. For example, to list all protected files owned by a user identified by the ID otherUserID:

1StoragePagedListOptions options = StoragePagedListOptions.builder()
2    .accessLevel(StorageAccessLevel.PROTECTED)
3    .targetIdentityId("otherUserID")
4    .setPageSize(1000)
5    .build();
6
7Amplify.Storage.list(
8    "",
9    options,
10    result -> {
11        for (StorageItem item : result.getItems()) {
12            Log.i("MyAmplifyApp", "Item: " + item.getKey());
13        }
14        Log.i("MyAmplifyApp", "Next Token: " + result.getNextToken());
15    },
16    error -> Log.e("MyAmplifyApp", "List failure", error);
17);

Query transfers

Remove files