First step towards list persistance

src/com/owncloud/android/services/observer/FileAlterationMagicObserver.java

@@ -0,0 +1,62 @@
+/**
+ * Nextcloud Android client application
+ *
+ * @author Mario Danic
+ * Copyright (C) 2017 Mario Danic
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.owncloud.android.services.observer;
+
+import org.apache.commons.io.IOCase;
+import org.apache.commons.io.monitor.FileAlterationObserver;
+import org.apache.commons.io.monitor.FileEntry;
+
+import java.io.File;
+import java.io.FileFilter;
+
+/**
+ * Magical file observer
+ */
+
+public class FileAlterationMagicObserver extends FileAlterationObserver {
+
+    public FileAlterationMagicObserver(String directoryName) {
+        super(directoryName);
+    }
+
+    public FileAlterationMagicObserver(String directoryName, FileFilter fileFilter) {
+        super(directoryName, fileFilter);
+    }
+
+    public FileAlterationMagicObserver(String directoryName, FileFilter fileFilter, IOCase caseSensitivity) {
+        super(directoryName, fileFilter, caseSensitivity);
+    }
+
+    public FileAlterationMagicObserver(File directory) {
+        super(directory);
+    }
+
+    public FileAlterationMagicObserver(File directory, FileFilter fileFilter) {
+        super(directory, fileFilter);
+    }
+
+    public FileAlterationMagicObserver(File directory, FileFilter fileFilter, IOCase caseSensitivity) {
+        super(directory, fileFilter, caseSensitivity);
+    }
+
+    public FileAlterationMagicObserver(FileEntry rootEntry, FileFilter fileFilter, IOCase caseSensitivity) {
+        super(rootEntry, fileFilter, caseSensitivity);
+    }
+}

src/com/owncloud/android/services/observer/SyncedFolderObserverService.java

@@ -35,9 +35,11 @@ import com.owncloud.android.services.FileAlterationMagicListener;
 
 import org.apache.commons.io.monitor.FileAlterationMonitor;
 import org.apache.commons.io.monitor.FileAlterationObserver;
+import org.apache.commons.io.monitor.FileEntry;
 
 import java.io.File;
 import java.io.FileFilter;
+import java.lang.reflect.Field;
 import java.util.HashMap;
 
 public class SyncedFolderObserverService extends Service {
@@ -62,12 +64,29 @@ public class SyncedFolderObserverService extends Service {
                 return !pathname.getName().startsWith(".") && !pathname.getAbsolutePath().endsWith(".tmp");
             }
         };
+
+        FileEntry rootEntry;
+
         Log_OC.d(TAG, "start");
         for (SyncedFolder syncedFolder : mProvider.getSyncedFolders()) {
             if (syncedFolder.isEnabled() && !syncedFolderMap.containsKey(syncedFolder.getLocalPath())) {
                 Log_OC.d(TAG, "start observer: " + syncedFolder.getLocalPath());
-
                 FileAlterationObserver observer = new FileAlterationObserver(syncedFolder.getLocalPath(), fileFilter);
+                Field f = null;
+                try {
+                    observer.initialize();
+                    f = observer.getClass().getDeclaredField("rootEntry");
+                    f.setAccessible(true);
+                    rootEntry = (FileEntry) f.get(observer);
+                    observer = new FileAlterationMagicObserver(rootEntry, fileFilter, null);
+                } catch (NoSuchFieldException e) {
+                    Log_OC.d(TAG, "Failed getting private field rootEntry via NoSuchFieldException");
+                } catch (IllegalAccessException e) {
+                    Log_OC.d(TAG, "Failed getting private field rootEntry via IllegalAccessException");
+                } catch (Exception e) {
+                    Log_OC.d(TAG, "Failed getting an observer to intialize");
+                }
+
                 observer.addListener(new FileAlterationMagicListener(syncedFolder));
                 monitor.addObserver(observer);
                 syncedFolderMap.put(syncedFolder.getLocalPath(), observer);