+import com.owncloud.android.authentication.AccountAuthenticator;
+import com.owncloud.android.authentication.AuthenticatorActivity;
+import com.owncloud.android.datamodel.FileDataStorageManager;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.operations.ChunkedUploadFileOperation;
+import com.owncloud.android.operations.CreateFolderOperation;
+import com.owncloud.android.operations.RemoteOperation;
+import com.owncloud.android.operations.RemoteOperationResult;
+import com.owncloud.android.operations.UploadFileOperation;
+import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
+import com.owncloud.android.ui.activity.FileDetailActivity;
+import com.owncloud.android.ui.fragment.FileDetailFragment;
+import com.owncloud.android.utils.OwnCloudVersion;
+
+import eu.alefzero.webdav.OnDatatransferProgressListener;
+import eu.alefzero.webdav.WebdavEntry;
+import eu.alefzero.webdav.WebdavUtils;
+
+import com.owncloud.android.network.OwnCloudClientUtils;
+