Fixed bug when turning tablet with no file in the right fragment

[pub/Android/ownCloud.git] / src / com / owncloud / android / operations / DownloadFileOperation.java

diff --git a/src/com/owncloud/android/operations/DownloadFileOperation.java b/src/com/owncloud/android/operations/DownloadFileOperation.java
index e84345c..cb4355f 100644 (file)
--- a/src/com/owncloud/android/operations/DownloadFileOperation.java
+++ b/src/com/owncloud/android/operations/DownloadFileOperation.java
@@ -2,9 +2,8 @@
  *   Copyright (C) 2012-2013 ownCloud Inc.
  *
  *   This program is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 2 of the License, or
- *   (at your option) any later version.
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -124,9 +123,17 @@ public class DownloadFileOperation extends RemoteOperation {
     
     
     public void addDatatransferProgressListener (OnDatatransferProgressListener listener) {
-        mDataTransferListeners.add(listener);
+        synchronized (mDataTransferListeners) {
+            mDataTransferListeners.add(listener);
+        }
     }
     
+    public void removeDatatransferProgressListener(OnDatatransferProgressListener listener) {
+        synchronized (mDataTransferListeners) {
+            mDataTransferListeners.remove(listener);
+        }
+    }
+
     @Override
     protected RemoteOperationResult run(WebdavClient client) {
         RemoteOperationResult result = null;
@@ -191,9 +198,11 @@ public class DownloadFileOperation extends RemoteOperation {
                     }
                     fos.write(bytes, 0, readResult);
                     transferred += readResult;
-                    it = mDataTransferListeners.iterator();
-                    while (it.hasNext()) {
-                        it.next().onTransferProgress(readResult, transferred, mFile.getFileLength(), targetFile.getName());
+                    synchronized (mDataTransferListeners) {
+                        it = mDataTransferListeners.iterator();
+                        while (it.hasNext()) {
+                            it.next().onTransferProgress(readResult, transferred, mFile.getFileLength(), targetFile.getName());
+                        }
                     }
                 }
                 savedFile = true;
@@ -222,4 +231,5 @@ public class DownloadFileOperation extends RemoteOperation {
         mCancellationRequested.set(true);   // atomic set; there is no need of synchronizing it
     }
 
+
 }