android: frontend: gamelist: Add swipe to refresh gesture.

src/android/app/src/main/java/org/citra/citra_android/ui/main/MainPresenter.java

@@ -38,10 +38,6 @@ public final class MainPresenter {
                 mView.launchSettingsActivity(SettingsFile.FILE_NAME_CONFIG);
                 return true;
 
-            case R.id.menu_refresh:
-                refeshGameList();
-                return true;
-
             case R.id.button_add_directory:
                 mView.launchFileListActivity();
                 return true;

src/android/app/src/main/java/org/citra/citra_android/ui/main/TvMainActivity.java

@@ -226,10 +226,6 @@ public final class TvMainActivity extends FragmentActivity implements MainView {
                 R.drawable.ic_add_tv,
                 R.string.add_directory_title));
 
-        rowItems.add(new TvSettingsItem(R.id.menu_refresh,
-                R.drawable.ic_refresh_tv,
-                R.string.grid_menu_refresh));
-
         // Create a header for this row.
         HeaderItem header =
                 new HeaderItem(R.string.preferences_settings, getString(R.string.preferences_settings));

src/android/app/src/main/java/org/citra/citra_android/ui/platform/PlatformGamesFragment.java

@@ -4,14 +4,17 @@ import android.database.Cursor;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.widget.GridLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import org.citra.citra_android.DolphinApplication;
 import org.citra.citra_android.R;
 import org.citra.citra_android.adapters.GameAdapter;
+import org.citra.citra_android.model.GameDatabase;
 
 public final class PlatformGamesFragment extends Fragment implements PlatformGamesView {
     private PlatformGamesPresenter mPresenter = new PlatformGamesPresenter(this);
@@ -46,6 +49,18 @@ public final class PlatformGamesFragment extends Fragment implements PlatformGam
         mRecyclerView.setAdapter(mAdapter);
 
         mRecyclerView.addItemDecoration(new GameAdapter.SpacesItemDecoration(6));
+
+        // Add swipe down to refresh gesture
+        final SwipeRefreshLayout pullToRefresh = view.findViewById(R.id.refresh_grid_games);
+        pullToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                GameDatabase databaseHelper = DolphinApplication.databaseHelper;
+                databaseHelper.scanLibrary(databaseHelper.getWritableDatabase());
+                refresh();
+                pullToRefresh.setRefreshing(false);
+            }
+        });
     }
 
     @Override

src/android/app/src/main/res/layout/fragment_grid.xml

@@ -4,12 +4,18 @@
              android:layout_width="match_parent"
              android:layout_height="match_parent">
 
-    <android.support.v7.widget.RecyclerView
+    <android.support.v4.widget.SwipeRefreshLayout
-        android:id="@+id/grid_games"
+        android:id="@+id/refresh_grid_games"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content">
-        android:layout_marginLeft="@dimen/activity_horizontal_margin"
-        android:layout_marginRight="@dimen/activity_horizontal_margin"
-        tools:listitem="@layout/card_game"/>
 
+        <android.support.v7.widget.RecyclerView
+            android:id="@+id/grid_games"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginLeft="@dimen/activity_horizontal_margin"
+            android:layout_marginRight="@dimen/activity_horizontal_margin"
+            tools:listitem="@layout/card_game"/>
+
+    </android.support.v4.widget.SwipeRefreshLayout>
 </FrameLayout>

src/android/app/src/main/res/menu/menu_game_grid.xml

@@ -8,9 +8,4 @@
         android:icon="@drawable/ic_settings_core"
         app:showAsAction="ifRoom"/>
 
-    <item
-        android:id="@+id/menu_refresh"
-        android:title="@string/grid_menu_refresh"
-        android:icon="@drawable/ic_refresh"
-        app:showAsAction="ifRoom"/>
 </menu>