Implement getTaskListFragment to work with the fragment pager, which also fixes the showing comments problem

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

@@ -187,6 +187,15 @@ public class TaskListActivity extends AstridActivity implements MainMenuListener
         }
 	}
 
+    @Override
+    public TaskListFragment getTaskListFragment() {
+        if (fragmentLayout == LAYOUT_SINGLE) {
+            return tlfPager.getCurrentFragment();
+        } else {
+            return super.getTaskListFragment();
+        }
+    }
+
 	@Override
     public void setupTasklistFragmentWithFilter(Filter filter, Bundle extras) {
 	    if (fragmentLayout == LAYOUT_SINGLE) {

astrid/src/com/todoroo/astrid/adapter/TaskListFragmentPagerAdapter.java

@@ -1,5 +1,7 @@
 package com.todoroo.astrid.adapter;
 
+import java.util.HashMap;
+
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.support.v4.app.Fragment;
@@ -13,12 +15,15 @@ import com.todoroo.astrid.api.FilterWithCustomIntent;
 
 public class TaskListFragmentPagerAdapter extends FragmentStatePagerAdapter implements FilterDataSourceChangedListener {
 
+    private final HashMap<Integer, Fragment> positionToFragment;
+
     private final FilterAdapter filterAdapter;
 
     public TaskListFragmentPagerAdapter(FragmentManager fm, FilterAdapter filterAdapter) {
         super(fm);
         this.filterAdapter = filterAdapter;
         filterAdapter.setDataSourceChangedListener(this);
+        positionToFragment = new HashMap<Integer, Fragment>();
     }
 
     @Override
@@ -28,7 +33,14 @@ public class TaskListFragmentPagerAdapter extends FragmentStatePagerAdapter impl
 
     @Override
     public Fragment getItem(int position) {
-        return getFragmentForFilter(filterAdapter.getItem(position));
+        Filter filter = filterAdapter.getItem(position);
+        Fragment fragment = getFragmentForFilter(filter);
+        positionToFragment.put(position, fragment);
+        return fragment;
+    }
+
+    public Fragment lookupFragmentForPosition(int position) {
+        return positionToFragment.get(position);
     }
 
     @Override

astrid/src/com/todoroo/astrid/ui/TaskListFragmentPager.java

@@ -5,6 +5,7 @@ import android.support.v4.view.PagerAdapter;
 import android.support.v4.view.ViewPager;
 import android.util.AttributeSet;
 
+import com.todoroo.astrid.activity.TaskListFragment;
 import com.todoroo.astrid.adapter.TaskListFragmentPagerAdapter;
 import com.todoroo.astrid.api.Filter;
 
@@ -37,4 +38,12 @@ public class TaskListFragmentPager extends ViewPager {
     public void showFilter(int index) {
         setCurrentItem(index, true);
     }
+
+    /**
+     * Returns a reference to the currently showing fragment
+     * @return
+     */
+    public TaskListFragment getCurrentFragment() {
+        return (TaskListFragment) ((TaskListFragmentPagerAdapter) getAdapter()).lookupFragmentForPosition(getCurrentItem());
+    }
 }