+import com.actionbarsherlock.app.ActionBar;
+import com.actionbarsherlock.app.SherlockListActivity;
+import com.owncloud.android.MainApp;
+import com.owncloud.android.R;
+import com.owncloud.android.authentication.AccountAuthenticator;
+import com.owncloud.android.datamodel.FileDataStorageManager;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.files.services.FileUploader;
+import com.owncloud.android.utils.DisplayUtils;
+import com.owncloud.android.utils.Log_OC;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Stack;
+import java.util.Vector;
+