Fix nits in contextual card package.

We missed to catch a few nits in previous CLs. This change cleans up
some of it.

Test: manual
Change-Id: Ibd3466f781952f998e1183a49f56e812cbce99a1

src/com/android/settings/homepage/CardContentLoader.java

@@ -19,7 +19,7 @@ package com.android.settings.homepage;
 import android.content.Context;
 import android.database.Cursor;
 
-import androidx.annotation.Nullable;
+import androidx.annotation.NonNull;
 
 import com.android.settingslib.utils.AsyncLoaderCompat;
 
@@ -45,22 +45,15 @@ public class CardContentLoader extends AsyncLoaderCompat<List<ContextualCard>> {
 
     }
 
-    @Nullable
+    @NonNull
     @Override
     public List<ContextualCard> loadInBackground() {
-        List<ContextualCard> result;
-        try (Cursor cursor = CardDatabaseHelper.getInstance(mContext).getAllContextualCards()) {
+        final List<ContextualCard> result = new ArrayList<>();
+        try (Cursor cursor = CardDatabaseHelper.getInstance(mContext).getContextualCards()) {
             if (cursor.getCount() == 0) {
                 //TODO(b/113372471): Load Default static cards and return 3 static cards
-                return new ArrayList<>();
-            }
-            result = buildContextualCardList(cursor);
-        }
                 return result;
             }
-
-    private List<ContextualCard> buildContextualCardList(Cursor cursor) {
-        final List<ContextualCard> result = new ArrayList<>();
             for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
                 final ContextualCard card = new ContextualCard(cursor);
                 if (card.isCustomCard()) {
@@ -69,6 +62,7 @@ public class CardContentLoader extends AsyncLoaderCompat<List<ContextualCard>> {
                     result.add(card);
                 }
             }
+        }
         return result;
     }
 }

src/com/android/settings/homepage/CardDatabaseHelper.java

@@ -192,7 +192,7 @@ public class CardDatabaseHelper extends SQLiteOpenHelper {
         return sCardDatabaseHelper;
     }
 
-    Cursor getAllContextualCards() {
+    Cursor getContextualCards() {
         final SQLiteDatabase db = this.getReadableDatabase();
         Cursor cursor = db.query(CARD_TABLE, null /* columns */, null /* selection */,
                 null /* selectionArgs */, null /* groupBy */, null /* having */,

src/com/android/settings/homepage/ContextualCardController.java

@@ -27,8 +27,8 @@ public interface ContextualCardController {
     int getCardType();
 
     /**
-     * When data is updated or changed, the new data should be passed to ContextualCardManager for list
-     * updating.
+     * When data is updated or changed, the new data should be passed to ContextualCardManager for
+     * list updating.
      */
     void onDataUpdated(List<ContextualCard> cardList);
 

src/com/android/settings/homepage/ContextualCardManager.java

@@ -68,7 +68,7 @@ public class ContextualCardManager implements CardContentLoader.CardContentLoade
         mControllerRendererPool = new ControllerRendererPool();
     }
 
-    void startCardContentLoading(PersonalSettingsFragment fragment) {
+    void loadContextualCards(PersonalSettingsFragment fragment) {
         final CardContentLoaderCallbacks cardContentLoaderCallbacks =
                 new CardContentLoaderCallbacks(mContext);
         cardContentLoaderCallbacks.setListener(this);
@@ -152,7 +152,6 @@ public class ContextualCardManager implements CardContentLoader.CardContentLoade
         return mControllerRendererPool;
     }
 
-
     static class CardContentLoaderCallbacks implements
             LoaderManager.LoaderCallbacks<List<ContextualCard>> {
 

src/com/android/settings/homepage/ContextualCardRenderer.java

@@ -31,15 +31,15 @@ public interface ContextualCardRenderer {
     int getViewType();
 
     /**
-     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onCreateViewHolder(ViewGroup,
-     * int)}, this method will be called to retrieve the corresponding
+     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onCreateViewHolder},
+     * this method will be called to retrieve the corresponding
      * {@link androidx.recyclerview.widget.RecyclerView.ViewHolder}.
      */
     RecyclerView.ViewHolder createViewHolder(View view);
 
     /**
-     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onBindViewHolder(RecyclerView
-     * .ViewHolder, int)}, this method will be called to bind data to the
+     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onBindViewHolder},
+     * this method will be called to bind data to the
      * {@link androidx.recyclerview.widget.RecyclerView.ViewHolder}.
      */
     void bindView(RecyclerView.ViewHolder holder, ContextualCard card);

src/com/android/settings/homepage/ContextualCardsAdapter.java

@@ -27,8 +27,8 @@ import androidx.recyclerview.widget.RecyclerView;
 import java.util.ArrayList;
 import java.util.List;
 
-public class ContextualCardsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements
-        ContextualCardUpdateListener {
+public class ContextualCardsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
+        implements ContextualCardUpdateListener {
     static final int SPAN_COUNT = 2;
 
     private static final String TAG = "ContextualCardsAdapter";

src/com/android/settings/homepage/PersonalSettingsFragment.java

@@ -43,7 +43,7 @@ public class PersonalSettingsFragment extends InstrumentedFragment {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mContextualCardManager = new ContextualCardManager(getContext(), getSettingsLifecycle());
-        mContextualCardManager.startCardContentLoading(this);
+        mContextualCardManager.loadContextualCards(this);
     }
 
     @Override