Only apply remote list fragment if changed

app/src/main/java/org/tasks/fragments/TaskEditControlSetFragmentManager.java

@@ -116,6 +116,7 @@ public class TaskEditControlSetFragmentManager {
       TaskEditFragment taskEditFragment, Task task) {
     Bundle arguments = new Bundle();
     arguments.putParcelable(TaskEditControlFragment.EXTRA_TASK, task);
+    arguments.putBoolean(TaskEditControlFragment.EXTRA_IS_NEW, task.isNew());
 
     List<TaskEditControlFragment> fragments = new ArrayList<>();
     FragmentManager fragmentManager = taskEditFragment.getChildFragmentManager();

app/src/main/java/org/tasks/ui/RemoteListFragment.java

@@ -14,6 +14,7 @@ import androidx.annotation.Nullable;
 import butterknife.BindView;
 import butterknife.OnClick;
 import com.google.android.material.chip.Chip;
+import com.google.common.base.Objects;
 import com.google.common.collect.ImmutableList;
 import com.todoroo.astrid.api.CaldavFilter;
 import com.todoroo.astrid.api.Filter;
@@ -164,14 +165,20 @@ public class RemoteListFragment extends TaskEditControlFragment {
 
   @Override
   public void apply(Task task) {
+    if (isNew() || hasChanges()) {
       task.setParent(0);
       task.setParentUuid(null);
       taskMover.move(ImmutableList.of(task.getId()), selectedList);
     }
+  }
 
   @Override
   public boolean hasChanges(Task original) {
-    return selectedList == null ? originalList != null : !selectedList.equals(originalList);
+    return hasChanges();
+  }
+
+  private boolean hasChanges() {
+    return !Objects.equal(selectedList, originalList);
   }
 
   @Override

app/src/main/java/org/tasks/ui/TaskEditControlFragment.java

@@ -16,8 +16,10 @@ import org.tasks.injection.InjectingFragment;
 public abstract class TaskEditControlFragment extends InjectingFragment {
 
   public static final String EXTRA_TASK = "extra_task";
+  public static final String EXTRA_IS_NEW = "extra_is_new";
 
   protected Task task;
+  private boolean isNew;
 
   @Nullable
   @Override
@@ -39,6 +41,7 @@ public abstract class TaskEditControlFragment extends InjectingFragment {
     Bundle arguments = getArguments();
     if (arguments != null) {
       task = arguments.getParcelable(EXTRA_TASK);
+      isNew = arguments.getBoolean(EXTRA_IS_NEW);
     }
   }
 
@@ -57,4 +60,8 @@ public abstract class TaskEditControlFragment extends InjectingFragment {
   public boolean hasChanges(Task original) {
     return false;
   }
+
+  protected boolean isNew() {
+    return isNew;
+  }
 }