[Catalog] Add guidance to use Bottom Navigation Bar on compact screens for Navigation Rail

PiperOrigin-RevId: 651507172

Author: imhappi

catalog/java/io/material/catalog/navigationrail/NavigationRailAnimatedDemoFragment.java

@@ -18,6 +18,9 @@
 
 import io.material.catalog.R;
 
+import android.annotation.SuppressLint;
+import android.content.pm.ActivityInfo;
+import android.content.res.Configuration;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -31,10 +34,20 @@
  */
 public class NavigationRailAnimatedDemoFragment extends DemoFragment {
 
+  @SuppressLint("SourceLockedOrientationActivity")
   @Override
   public View onCreateDemoView(
       LayoutInflater layoutInflater, @Nullable ViewGroup viewGroup, @Nullable Bundle bundle) {
-    return layoutInflater.inflate(
+    View v = layoutInflater.inflate(
         R.layout.cat_navigation_rail_animated, viewGroup, false /* attachToRoot */);
+    Configuration config = getResources().getConfiguration();
+    View compactMessage = v.findViewById(R.id.cat_navigation_rail_compact_msg);
+    if (config.smallestScreenWidthDp <= 600) { // 600dp and below is classified as compact
+      compactMessage.setVisibility(View.VISIBLE);
+      getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
+    } else {
+      getActivity().setRequestedOrientation(config.orientation);
+    }
+    return v;
   }
 }

catalog/java/io/material/catalog/navigationrail/res/layout/cat_navigation_rail_animated.xml

@@ -14,12 +14,29 @@
   ~ See the License for the specific language governing permissions and
   ~ limitations under the License.
   -->
+<LinearLayout
+  android:layout_width="match_parent"
+  android:layout_height="match_parent"
+  android:orientation="horizontal"
+  xmlns:android="http://schemas.android.com/apk/res/android">
 <com.google.android.material.navigationrail.NavigationRailView
-    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/cat_navigation_rail"
     android:layout_width="wrap_content"
     android:layout_height="match_parent"
     app:menu="@menu/navigation_rail_animated_menu"
     android:fitsSystemWindows="false"/>
+  <LinearLayout
+    android:layout_width="0dp"
+    android:layout_height="match_parent"
+    android:layout_weight="1">
+    <TextView
+      android:id="@+id/cat_navigation_rail_compact_msg"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:gravity="center"
+      android:visibility="gone"
+      android:text="@string/cat_navigation_rail_compact_message" />
+  </LinearLayout>
+</LinearLayout>
 

catalog/java/io/material/catalog/navigationrail/res/values/strings.xml

@@ -103,4 +103,6 @@
 
   <string name="cat_navigation_rail_fab_content_desc"
           description="Content description for a floating action button in the navigation rail.[CHAR_LIMIT=50]">Navigation Rail FAB</string>
+
+  <string name="cat_navigation_rail_compact_message" description="Usage guidance for Navigation Rail advising using a Bottom Navigation Bar on compact screens instead. [CHAR_LIMIT=50]">This demo is for demonstration purposes only. Use a Bottom Navigation Bar instead on compact screen sizes.</string>
 </resources>