Entry entries = mApi.metadata(Path, 100, null, true, null);

for (Entry e : entries.contents) {
    if (!e.isDeleted) {
        Log.i("Is Folder",String.valueOf(e.isDir));
        Log.i("Item Name",e.fileName);
    }
}

http://stackoverflow.com/a/10546792/521717

Iterating through a Dropbox Folder

DropboxAPI -  folder content

java, api

Java