Working solution reached for scrolling to and expanding alarm when PendingIntent fired from status bar

app/src/main/java/com/philliphsu/clock2/MainActivity.java

@@ -161,6 +161,29 @@ public class MainActivity extends BaseActivity {
         }
     }
 
+    @Override
+    protected void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        Log.d(TAG, "Got new intent " + intent);
+        // TODO: Make actual action const
+//        if ("RecyclerViewFragment.ACTION_SCROLL_TO_STABLE_ID".equals(intent.getAction())) {
+            // TODO: Get int extra for the page of the exact RVFrag this scrolling should be applied to.
+            // Requires making RVFrag.EXTRA_SCROLL_TARGET_PAGE.
+            final int targetPage = PAGE_ALARMS;
+            if (targetPage >= 0 && targetPage <= mSectionsPagerAdapter.getCount() - 1) {
+                mViewPager.setCurrentItem(targetPage, true/*smoothScroll*/);
+                // TODO: Make generic extra RVFrag.EXTRA_SCROLL_TO_STABLE_ID
+                final long scrollToStableId = intent.getLongExtra(AlarmsFragment.EXTRA_SCROLL_TO_ALARM_ID, -1);
+                if (scrollToStableId != -1) {
+                    RecyclerViewFragment rvFrag = (RecyclerViewFragment)
+                            mSectionsPagerAdapter.getFragment(targetPage);
+                    Log.d(TAG, "Scrolling to stable id");
+                    rvFrag.performScrollToStableId(scrollToStableId);
+                }
+            }
+//        }
+    }
+
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (resultCode != RESULT_OK)

app/src/main/java/com/philliphsu/clock2/alarms/misc/AlarmController.java

@@ -79,6 +79,9 @@ public final class AlarmController {
         final PendingIntent alarmIntent = alarmIntent(alarm, false);
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             Intent viewAlarm = new Intent(mAppContext, MainActivity.class);
+            // TODO: Use RVFrag.ACTION_......
+            viewAlarm.setAction("viewAlarm");
+            // TODO: Pass int extra for the alarms page to RVFrag.EXTRA_SCROLL_TARGET_PAGE.
             viewAlarm.putExtra(AlarmsFragment.EXTRA_SCROLL_TO_ALARM_ID, alarm.getId());
             PendingIntent showIntent = PendingIntent.getActivity(mAppContext,
                     alarm.getIntId(), viewAlarm, FLAG_CANCEL_CURRENT);

app/src/main/java/com/philliphsu/clock2/alarms/ui/AlarmsFragment.java

@@ -4,6 +4,7 @@ import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.content.Loader;
 import android.support.v7.widget.RecyclerView;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -47,10 +48,10 @@ public class AlarmsFragment extends RecyclerViewFragment<Alarm, BaseAlarmViewHol
                 getFragmentManager(), getActivity(), this);
         mTimePickerDialogController.tryRestoreCallback(makeTimePickerDialogTag());
 
-        long scrollToStableId = getActivity().getIntent().getLongExtra(EXTRA_SCROLL_TO_ALARM_ID, -1);
+//        long scrollToStableId = getActivity().getIntent().getLongExtra(EXTRA_SCROLL_TO_ALARM_ID, -1);
-        if (scrollToStableId != -1) {
+//        if (scrollToStableId != -1) {
-            setScrollToStableId(scrollToStableId);
+//            setScrollToStableId(scrollToStableId);
-        }
+//        }
     }
 
     @Nullable
@@ -63,9 +64,28 @@ public class AlarmsFragment extends RecyclerViewFragment<Alarm, BaseAlarmViewHol
         return super.onCreateView(inflater, container, savedInstanceState);
     }
 
+    @Override
+    public void onPause() {
+        super.onPause();
+        Log.d(TAG, "onPause()");
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        Log.d(TAG, "onStop()");
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        Log.d(TAG, "onStart()");
+    }
+
     @Override
     public void onResume() {
         super.onResume();
+        Log.d(TAG, "onResume()");
         // Show the pending Snackbar, if any, that was prepared for us
         // by another app component.
         DelayedSnackbarHandler.makeAndShow(mSnackbarAnchor);
@@ -79,6 +99,7 @@ public class AlarmsFragment extends RecyclerViewFragment<Alarm, BaseAlarmViewHol
     @Override
     public void onLoadFinished(Loader<AlarmCursor> loader, AlarmCursor data) {
         super.onLoadFinished(loader, data);
+        Log.d(TAG, "onLoadFinished()");
         // TODO: If this was a content change due to an update, verify that
         // we scroll to the updated alarm if its sort order changes.
 

app/src/main/java/com/philliphsu/clock2/list/RecyclerViewFragment.java

@@ -168,7 +168,7 @@ public abstract class RecyclerViewFragment<
         mList.smoothScrollToPosition(position);
     }
 
-    protected final void performScrollToStableId(long stableId) {
+    public final void performScrollToStableId(long stableId) {
         if (stableId != RecyclerView.NO_ID) {
             int position = -1;
             for (int i = 0; i < mAdapter.getItemCount(); i++) {