RecyclerView animations

app/src/googleplay/java/com/todoroo/astrid/gtasks/GtasksSubtaskListFragment.java

@@ -73,8 +73,8 @@ public class GtasksSubtaskListFragment extends GtasksListFragment {
     }
 
     @Override
-    protected TaskAdapter createTaskAdapter(List<Task> tasks) {
-        return helper.createTaskAdapter(tasks);
+    protected TaskAdapter createTaskAdapter() {
+        return helper.createTaskAdapter();
     }
 
     @Override

app/src/googleplay/java/com/todoroo/astrid/gtasks/OrderedMetadataListFragmentHelper.java

@@ -21,7 +21,6 @@ import org.tasks.data.GoogleTaskList;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 
 import javax.inject.Inject;
@@ -54,8 +53,8 @@ class OrderedMetadataListFragmentHelper {
         updater.initialize(filter);
     }
 
-    TaskAdapter createTaskAdapter(List<Task> cursor) {
-        taskAdapter = new DraggableTaskAdapter(cursor);
+    TaskAdapter createTaskAdapter() {
+        taskAdapter = new DraggableTaskAdapter();
 
         taskAdapter.setOnCompletedTaskListener(this::setCompletedForItemAndSubtasks);
 
@@ -64,10 +63,6 @@ class OrderedMetadataListFragmentHelper {
 
     private final class DraggableTaskAdapter extends TaskAdapter {
 
-        private DraggableTaskAdapter(List<Task> tasks) {
-            super(tasks);
-        }
-
         @Override
         public int getIndent(Task task) {
             return task.getGoogleTaskIndent();
@@ -101,8 +96,6 @@ class OrderedMetadataListFragmentHelper {
             } catch (Exception e) {
                 Timber.e(e, e.getMessage());
             }
-
-            fragment.loadTaskListContent();
         }
 
         @Override
@@ -116,7 +109,6 @@ class OrderedMetadataListFragmentHelper {
             } catch (Exception e) {
                 Timber.e(e, e.getMessage());
             }
-            fragment.loadTaskListContent();
         }
     }
 

app/src/main/java/com/todoroo/astrid/activity/TaskListActivity.java

@@ -465,10 +465,6 @@ public class TaskListActivity extends InjectingAppCompatActivity implements
     @Override
     public void sortChanged() {
         localBroadcastManager.broadcastRefresh();
-        reloadCurrentFilter();
-    }
-
-    private void reloadCurrentFilter() {
         onFilterItemClicked(getCurrentFilter());
     }
 

app/src/main/java/com/todoroo/astrid/activity/TaskListFragment.java

@@ -16,6 +16,8 @@ import android.support.design.widget.CoordinatorLayout;
 import android.support.design.widget.Snackbar;
 import android.support.v4.view.MenuItemCompat;
 import android.support.v4.widget.SwipeRefreshLayout;
+import android.support.v7.util.DiffUtil;
+import android.support.v7.widget.DefaultItemAnimator;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.SearchView;
@@ -190,6 +192,8 @@ public class TaskListFragment extends InjectingFragment implements
             filter = BuiltInFilterExposer.getMyTasksFilter(getResources());
         }
 
+        filter.setFilterQueryOverride(null);
+
         setTaskAdapter();
     }
 
@@ -343,8 +347,7 @@ public class TaskListFragment extends InjectingFragment implements
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        filter.setFilterQueryOverride(null);
-
+        ((DefaultItemAnimator) recyclerView.getItemAnimator()).setSupportsChangeAnimations(false);
         recyclerAdapter.applyToRecyclerView(recyclerView);
         recyclerView.setLayoutManager(new LinearLayoutManager(context));
     }
@@ -401,32 +404,72 @@ public class TaskListFragment extends InjectingFragment implements
      * ======================================================================
      */
 
-    /**
-     * Load or re-load action items and update views
-     */
+    private static class DiffUtilCallback extends DiffUtil.Callback {
+
+        private final List<Task> oldTasks;
+        private final List<Task> newTasks;
+
+        public DiffUtilCallback(List<Task> oldTasks, List<Task> newTasks) {
+            this.oldTasks = oldTasks;
+            this.newTasks = newTasks;
+        }
+
+        @Override
+        public int getOldListSize() {
+            return oldTasks.size();
+        }
+
+        @Override
+        public int getNewListSize() {
+            return newTasks.size();
+        }
+
+        @Override
+        public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
+            return oldTasks.get(oldItemPosition).getId() == newTasks.get(newItemPosition).getId();
+        }
+
+        @Override
+        public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
+            return oldTasks.get(oldItemPosition).equals(newTasks.get(newItemPosition));
+        }
+    }
+
     public void loadTaskListContent() {
+        loadTaskListContent(true);
+    }
+
+    public void loadTaskListContent(boolean animate) {
         if (taskAdapter == null) {
             return;
         }
         // stash selected items
         Bundle saveState = recyclerAdapter.getSaveState();
 
-        List<Task> tasks = taskListDataProvider.toList(filter, taskProperties());
-        taskAdapter.setTasks(tasks);
+        List<Task> oldTasks = taskAdapter.getTasks();
+        List<Task> newTasks = taskListDataProvider.toList(filter, taskProperties());
+        taskAdapter.setTasks(newTasks);
+
+        if (animate) {
+            DiffUtil.DiffResult diffResult = DiffUtil.calculateDiff(new DiffUtilCallback(oldTasks, newTasks), true);
+            diffResult.dispatchUpdatesTo(recyclerAdapter);
+        } else {
+            recyclerAdapter.notifyDataSetChanged();
+        }
+
+        recyclerAdapter.restoreSaveState(saveState);
 
-        if (taskAdapter.getCount() == 0) {
+        if (newTasks.isEmpty()) {
             swipeRefreshLayout.setVisibility(View.GONE);
             emptyRefreshLayout.setVisibility(View.VISIBLE);
         } else {
-            recyclerAdapter.notifyDataSetChanged();
-            recyclerAdapter.restoreSaveState(saveState);
             swipeRefreshLayout.setVisibility(View.VISIBLE);
             emptyRefreshLayout.setVisibility(View.GONE);
         }
     }
 
-    protected TaskAdapter createTaskAdapter(List<Task> tasks) {
-        return new TaskAdapter(tasks);
+    protected TaskAdapter createTaskAdapter() {
+        return new TaskAdapter();
     }
 
     public static final String TAGS_METADATA_JOIN = "for_tags"; //$NON-NLS-1$
@@ -441,10 +484,8 @@ public class TaskListFragment extends InjectingFragment implements
             return;
         }
 
-        List<Task> tasks = taskListDataProvider.toList(filter, taskProperties());
-
         // set up list adapters
-        taskAdapter = createTaskAdapter(tasks);
+        taskAdapter = createTaskAdapter();
         recyclerAdapter = new TaskListRecyclerAdapter(getActivity(), taskAdapter, viewHolderFactory,
                 this, taskDeleter, taskDuplicator, tracker, dialogBuilder);
     }

app/src/main/java/com/todoroo/astrid/adapter/TaskAdapter.java

@@ -15,8 +15,10 @@ import com.todoroo.astrid.data.Task;
 import org.tasks.data.TaskAttachment;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
+import static com.google.common.collect.Lists.newArrayList;
 import static com.todoroo.astrid.data.Task.NO_ID;
 import static com.todoroo.astrid.data.Task.NO_UUID;
 
@@ -28,7 +30,7 @@ import static com.todoroo.astrid.data.Task.NO_UUID;
  */
 public class TaskAdapter {
 
-    private List<Task> tasks;
+    private final List<Task> tasks = new ArrayList<>();
 
     public List<Integer> getTaskPositions(List<Long> longs) {
         List<Integer> result = new ArrayList<>();
@@ -41,7 +43,8 @@ public class TaskAdapter {
     }
 
     public void setTasks(List<Task> tasks) {
-        this.tasks = tasks;
+        this.tasks.clear();
+        this.tasks.addAll(tasks);
     }
 
     public int getCount() {
@@ -52,8 +55,8 @@ public class TaskAdapter {
         void onCompletedTask(Task item, boolean newState);
     }
 
-    public static final StringProperty TAGS = new StringProperty(null, "group_concat(nullif(" + TaskListFragment.TAGS_METADATA_JOIN + ".tag_uid, '')"+ ", ',')").as("tags");
-    public static final LongProperty FILE_ID_PROPERTY = TaskAttachment.ID.cloneAs(TaskListFragment.FILE_METADATA_JOIN, "fileId");
+    private static final StringProperty TAGS = new StringProperty(null, "group_concat(nullif(" + TaskListFragment.TAGS_METADATA_JOIN + ".tag_uid, '')"+ ", ',')").as("tags");
+    private static final LongProperty FILE_ID_PROPERTY = TaskAttachment.ID.cloneAs(TaskListFragment.FILE_METADATA_JOIN, "fileId");
 
     public static final Property<?>[] PROPERTIES = ObjectArrays.concat(
             Task.PROPERTIES,
@@ -64,10 +67,6 @@ public class TaskAdapter {
 
     private OnCompletedTaskListener onCompletedTaskListener = null;
 
-    public TaskAdapter(List<Task> tasks) {
-        this.tasks = tasks;
-    }
-
     public int getIndent(Task task) {
         return 0;
     }
@@ -89,7 +88,7 @@ public class TaskAdapter {
     }
 
     public List<Task> getTasks() {
-        return tasks;
+        return newArrayList(tasks);
     }
 
     public long getTaskId(int position) {

app/src/main/java/com/todoroo/astrid/data/Task.java

@@ -1001,4 +1001,81 @@ public class Task implements Parcelable {
     public boolean hasFiles() {
         return hasFiles;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof Task)) return false;
+
+        Task task = (Task) o;
+
+        if (googleTaskIndent != task.googleTaskIndent) return false;
+        if (hasFiles != task.hasFiles) return false;
+        if (id != null ? !id.equals(task.id) : task.id != null) return false;
+        if (title != null ? !title.equals(task.title) : task.title != null) return false;
+        if (importance != null ? !importance.equals(task.importance) : task.importance != null)
+            return false;
+        if (dueDate != null ? !dueDate.equals(task.dueDate) : task.dueDate != null) return false;
+        if (hideUntil != null ? !hideUntil.equals(task.hideUntil) : task.hideUntil != null)
+            return false;
+        if (created != null ? !created.equals(task.created) : task.created != null) return false;
+        if (modified != null ? !modified.equals(task.modified) : task.modified != null)
+            return false;
+        if (completed != null ? !completed.equals(task.completed) : task.completed != null)
+            return false;
+        if (deleted != null ? !deleted.equals(task.deleted) : task.deleted != null) return false;
+        if (notes != null ? !notes.equals(task.notes) : task.notes != null) return false;
+        if (estimatedSeconds != null ? !estimatedSeconds.equals(task.estimatedSeconds) : task.estimatedSeconds != null)
+            return false;
+        if (elapsedSeconds != null ? !elapsedSeconds.equals(task.elapsedSeconds) : task.elapsedSeconds != null)
+            return false;
+        if (timerStart != null ? !timerStart.equals(task.timerStart) : task.timerStart != null)
+            return false;
+        if (notificationFlags != null ? !notificationFlags.equals(task.notificationFlags) : task.notificationFlags != null)
+            return false;
+        if (notifications != null ? !notifications.equals(task.notifications) : task.notifications != null)
+            return false;
+        if (lastNotified != null ? !lastNotified.equals(task.lastNotified) : task.lastNotified != null)
+            return false;
+        if (snoozeTime != null ? !snoozeTime.equals(task.snoozeTime) : task.snoozeTime != null)
+            return false;
+        if (recurrence != null ? !recurrence.equals(task.recurrence) : task.recurrence != null)
+            return false;
+        if (repeatUntil != null ? !repeatUntil.equals(task.repeatUntil) : task.repeatUntil != null)
+            return false;
+        if (calendarUri != null ? !calendarUri.equals(task.calendarUri) : task.calendarUri != null)
+            return false;
+        if (remoteId != null ? !remoteId.equals(task.remoteId) : task.remoteId != null)
+            return false;
+        return tags != null ? tags.equals(task.tags) : task.tags == null;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = id != null ? id.hashCode() : 0;
+        result = 31 * result + (title != null ? title.hashCode() : 0);
+        result = 31 * result + (importance != null ? importance.hashCode() : 0);
+        result = 31 * result + (dueDate != null ? dueDate.hashCode() : 0);
+        result = 31 * result + (hideUntil != null ? hideUntil.hashCode() : 0);
+        result = 31 * result + (created != null ? created.hashCode() : 0);
+        result = 31 * result + (modified != null ? modified.hashCode() : 0);
+        result = 31 * result + (completed != null ? completed.hashCode() : 0);
+        result = 31 * result + (deleted != null ? deleted.hashCode() : 0);
+        result = 31 * result + (notes != null ? notes.hashCode() : 0);
+        result = 31 * result + (estimatedSeconds != null ? estimatedSeconds.hashCode() : 0);
+        result = 31 * result + (elapsedSeconds != null ? elapsedSeconds.hashCode() : 0);
+        result = 31 * result + (timerStart != null ? timerStart.hashCode() : 0);
+        result = 31 * result + (notificationFlags != null ? notificationFlags.hashCode() : 0);
+        result = 31 * result + (notifications != null ? notifications.hashCode() : 0);
+        result = 31 * result + (lastNotified != null ? lastNotified.hashCode() : 0);
+        result = 31 * result + (snoozeTime != null ? snoozeTime.hashCode() : 0);
+        result = 31 * result + (recurrence != null ? recurrence.hashCode() : 0);
+        result = 31 * result + (repeatUntil != null ? repeatUntil.hashCode() : 0);
+        result = 31 * result + (calendarUri != null ? calendarUri.hashCode() : 0);
+        result = 31 * result + (remoteId != null ? remoteId.hashCode() : 0);
+        result = 31 * result + googleTaskIndent;
+        result = 31 * result + (tags != null ? tags.hashCode() : 0);
+        result = 31 * result + (hasFiles ? 1 : 0);
+        return result;
+    }
 }

app/src/main/java/com/todoroo/astrid/subtasks/AstridOrderedListFragmentHelper.java

@@ -44,8 +44,8 @@ class AstridOrderedListFragmentHelper {
         updater.initialize(list, filter);
     }
 
-    TaskAdapter createTaskAdapter(List<Task> tasks) {
-        taskAdapter = new DraggableTaskAdapter(tasks);
+    TaskAdapter createTaskAdapter() {
+        taskAdapter = new DraggableTaskAdapter();
 
         taskAdapter.setOnCompletedTaskListener(this::setCompletedForItemAndSubtasks);
 
@@ -54,10 +54,6 @@ class AstridOrderedListFragmentHelper {
 
     private final class DraggableTaskAdapter extends TaskAdapter {
 
-        private DraggableTaskAdapter(List<Task> tasks) {
-            super(tasks);
-        }
-
         @Override
         public int getIndent(Task task) {
             return updater.getIndentForTask(task.getUuid());
@@ -92,8 +88,6 @@ class AstridOrderedListFragmentHelper {
             } catch (Exception e) {
                 Timber.e(e, e.getMessage());
             }
-
-            fragment.loadTaskListContent();
         }
 
         @Override
@@ -107,8 +101,6 @@ class AstridOrderedListFragmentHelper {
             } catch (Exception e) {
                 Timber.e(e, e.getMessage());
             }
-
-            fragment.loadTaskListContent();
         }
     }
 

app/src/main/java/com/todoroo/astrid/subtasks/SubtasksFilterUpdater.java

@@ -66,7 +66,7 @@ public class SubtasksFilterUpdater {
         String query = filter.getSqlQuery();
 
         query = query.replaceAll("ORDER BY .*", "");
-        query = query + String.format(" ORDER BY %s", getOrderString());
+        query = query + String.format("ORDER BY %s", getOrderString());
         query = query.replace(
                 TaskDao.TaskCriteria.activeAndVisible().toString(),
                 TaskDao.TaskCriteria.notDeleted().toString());

app/src/main/java/com/todoroo/astrid/subtasks/SubtasksHelper.java

@@ -63,11 +63,11 @@ public class SubtasksHelper {
                 TagData tagData = tagDataDao.getTagByName(filter.listingTitle);
                 TaskListMetadata tlm = null;
                 if (tagData != null) {
-                    tlm = taskListMetadataDao.fetchByTagId(tagData.getRemoteId());
+                    tlm = taskListMetadataDao.fetchByTagOrFilter(tagData.getRemoteId());
                 } else if (BuiltInFilterExposer.isInbox(context, filter)) {
-                    tlm = taskListMetadataDao.fetchByTagId(TaskListMetadata.FILTER_ID_ALL);
+                    tlm = taskListMetadataDao.fetchByTagOrFilter(TaskListMetadata.FILTER_ID_ALL);
                 } else if (BuiltInFilterExposer.isTodayFilter(context, filter)) {
-                    tlm = taskListMetadataDao.fetchByTagId(TaskListMetadata.FILTER_ID_TODAY);
+                    tlm = taskListMetadataDao.fetchByTagOrFilter(TaskListMetadata.FILTER_ID_TODAY);
                 }
 
                 query = query.replaceAll("ORDER BY .*", "");
@@ -133,15 +133,15 @@ public class SubtasksHelper {
         return SubtasksFilterUpdater.serializeTree(tree);
     }
 
-    interface TreeRemapHelper<T> {
-        T getKeyFromOldUuid(String uuid);
+    interface TreeRemapHelper {
+        Long getKeyFromOldUuid(String uuid);
     }
 
-    private static <T> void remapTree(Node root, Map<T, String> idMap, TreeRemapHelper<T> helper) {
+    private static void remapTree(Node root, Map<Long, String> idMap, TreeRemapHelper helper) {
         ArrayList<Node> children = root.children;
         for (int i = 0; i < children.size(); i++) {
             Node child = children.get(i);
-            T key = helper.getKeyFromOldUuid(child.uuid);
+            Long key = helper.getKeyFromOldUuid(child.uuid);
             String uuid = idMap.get(key);
             if (!Task.isValidUuid(uuid)) {
                 children.remove(i);

app/src/main/java/com/todoroo/astrid/subtasks/SubtasksListFragment.java

@@ -74,7 +74,7 @@ public class SubtasksListFragment extends TaskListFragment {
         if (TextUtils.isEmpty(filterId)) {
             return null;
         }
-        TaskListMetadata taskListMetadata = taskListMetadataDao.fetchByTagId(filterId);
+        TaskListMetadata taskListMetadata = taskListMetadataDao.fetchByTagOrFilter(filterId);
         if (taskListMetadata == null) {
             String defaultOrder = preferences.getStringValue(prefId);
             if (TextUtils.isEmpty(defaultOrder)) {
@@ -101,8 +101,8 @@ public class SubtasksListFragment extends TaskListFragment {
     }
 
     @Override
-    protected TaskAdapter createTaskAdapter(List<Task> tasks) {
-        return helper.createTaskAdapter(tasks);
+    protected TaskAdapter createTaskAdapter() {
+        return helper.createTaskAdapter();
     }
 
     @Override

app/src/main/java/com/todoroo/astrid/subtasks/SubtasksTagListFragment.java

@@ -44,7 +44,7 @@ public class SubtasksTagListFragment extends TagListFragment {
     @Override
     public void setTaskAdapter() {
         String tdId = tagData.getRemoteId();
-        TaskListMetadata taskListMetadata = taskListMetadataDao.fetchByTagId(tagData.getRemoteId());
+        TaskListMetadata taskListMetadata = taskListMetadataDao.fetchByTagOrFilter(tagData.getRemoteId());
         if (taskListMetadata == null && !Task.isUuidEmpty(tdId)) {
             taskListMetadata = new TaskListMetadata();
             taskListMetadata.setTagUuid(tdId);
@@ -68,8 +68,8 @@ public class SubtasksTagListFragment extends TagListFragment {
     }
 
     @Override
-    protected TaskAdapter createTaskAdapter(List<Task> tasks) {
-        return helper.createTaskAdapter(tasks);
+    protected TaskAdapter createTaskAdapter() {
+        return helper.createTaskAdapter();
     }
 
     @Override

app/src/main/java/org/tasks/data/TaskListDataProvider.java

@@ -22,7 +22,6 @@ import static com.todoroo.astrid.activity.TaskListFragment.TAGS_METADATA_JOIN;
 
 public class TaskListDataProvider {
 
-    private final AtomicReference<String> sqlQueryTemplate = new AtomicReference<>();
     private final TaskDao taskDao;
     private final Preferences preferences;
 
@@ -53,19 +52,18 @@ public class TaskListDataProvider {
                         + Join.left(TaskAttachment.TABLE.as(FILE_METADATA_JOIN), Task.UUID.eq(Field.field(FILE_METADATA_JOIN + ".task_id")))
                         + filter.getSqlQuery();
 
-        sqlQueryTemplate.set(SortHelper.adjustQueryForFlagsAndSort(
-                preferences, joinedQuery, preferences.getSortMode()));
+        String query = SortHelper.adjustQueryForFlagsAndSort(
+                preferences, joinedQuery, preferences.getSortMode());
 
         String groupedQuery;
-        if (sqlQueryTemplate.get().contains("GROUP BY")) {
-            groupedQuery = sqlQueryTemplate.get();
-        } else if (sqlQueryTemplate.get().contains("ORDER BY")) {
-            groupedQuery = sqlQueryTemplate.get().replace("ORDER BY", "GROUP BY " + Task.ID + " ORDER BY"); //$NON-NLS-1$
+        if (query.contains("GROUP BY")) {
+            groupedQuery = query;
+        } else if (query.contains("ORDER BY")) {
+            groupedQuery = query.replace("ORDER BY", "GROUP BY " + Task.ID + " ORDER BY"); //$NON-NLS-1$
         } else {
-            groupedQuery = sqlQueryTemplate.get() + " GROUP BY " + Task.ID;
+            groupedQuery = query + " GROUP BY " + Task.ID;
         }
-        sqlQueryTemplate.set(groupedQuery);
 
-        return taskDao.fetchFiltered(sqlQueryTemplate.get(), properties);
+        return taskDao.fetchFiltered(groupedQuery, properties);
     }
 }

app/src/main/java/org/tasks/data/TaskListMetadataDao.java

@@ -2,30 +2,23 @@ package org.tasks.data;
 
 import android.arch.persistence.room.Dao;
 import android.arch.persistence.room.Insert;
-import android.arch.persistence.room.OnConflictStrategy;
 import android.arch.persistence.room.Query;
 import android.arch.persistence.room.Update;
 
-import com.todoroo.astrid.data.Task;
-import com.todoroo.astrid.helper.UUIDHelper;
-
 @Dao
 public abstract class TaskListMetadataDao {
 
     @Query("SELECT * from task_list_metadata where tag_uuid = :tagUuid OR filter = :tagUuid LIMIT 1")
-    public abstract TaskListMetadata fetchByTagId(String tagUuid);
+    public abstract TaskListMetadata fetchByTagOrFilter(String tagUuid);
 
     @Update
-    public abstract void update(TaskListMetadata taskListMetadata);
+    public abstract int update(TaskListMetadata taskListMetadata);
 
-    @Insert(onConflict = OnConflictStrategy.REPLACE)
-    public abstract void insert(TaskListMetadata taskListMetadata);
+    @Insert
+    abstract long insert(TaskListMetadata taskListMetadata);
 
     public void createNew(TaskListMetadata taskListMetadata) {
-        if (Task.isUuidEmpty(taskListMetadata.getRemoteId())) {
-            taskListMetadata.setRemoteId(UUIDHelper.newUUID());
-        }
-        insert(taskListMetadata);
+        taskListMetadata.setId(insert(taskListMetadata));
     }
 }
 

app/src/main/java/org/tasks/tasklist/TagListFragment.java

@@ -10,10 +10,10 @@ import com.todoroo.astrid.activity.TaskListActivity;
 import com.todoroo.astrid.activity.TaskListFragment;
 import com.todoroo.astrid.api.Filter;
 import com.todoroo.astrid.api.TagFilter;
-import org.tasks.data.TagData;
 
 import org.tasks.R;
 import org.tasks.activities.TagSettingsActivity;
+import org.tasks.data.TagData;
 import org.tasks.injection.FragmentComponent;
 
 public class TagListFragment extends TaskListFragment {

app/src/main/java/org/tasks/tasklist/TaskListRecyclerAdapter.java

@@ -301,6 +301,7 @@ public class TaskListRecyclerAdapter extends RecyclerView.Adapter<ViewHolder> im
                             to++;
                         }
                         adapter.moved(from, to);
+                        taskList.loadTaskListContent(false);
                     }
                 }
             }
@@ -314,6 +315,7 @@ public class TaskListRecyclerAdapter extends RecyclerView.Adapter<ViewHolder> im
             adapter.indented(
                     viewHolder.getAdapterPosition(),
                     direction == ItemTouchHelper.RIGHT ? 1 : -1);
+            taskList.loadTaskListContent(false);
         }
     }
 }