content: /*
   * Copyright (C) 2021 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package androidx.car.app.sample.showcase.common.textandicons;
  
  import static androidx.car.app.model.Action.BACK;
  
  import android.net.Uri;
  
  import androidx.annotation.NonNull;
  import androidx.annotation.Nullable;
  import androidx.car.app.CarContext;
  import androidx.car.app.HostInfo;
  import androidx.car.app.Screen;
  import androidx.car.app.model.CarIcon;
  import androidx.car.app.model.ItemList;
  import androidx.car.app.model.ListTemplate;
  import androidx.car.app.model.Row;
  import androidx.car.app.model.Template;
  import androidx.car.app.sample.showcase.common.R;
  import androidx.core.graphics.drawable.IconCompat;
  
  /** Creates a screen that demonstrate the image loading in the library using a content provider. */
  public final class ContentProviderIconsDemoScreen extends Screen {
      private static final int[] ICON_DRAWABLES = {
              R.drawable.arrow_right_turn, R.drawable.arrow_straight, R.drawable.ic_i5,
              R.drawable.ic_520
      };
      @Nullable
      private final String mHostPackageName;
  
      public ContentProviderIconsDemoScreen(@NonNull CarContext carContext) {
          super(carContext);
  
          HostInfo hostInfo = carContext.getHostInfo();
          mHostPackageName = hostInfo == null ? null : hostInfo.getPackageName();
      }
  
      @NonNull
      @Override
      public Template onGetTemplate() {
          ItemList.Builder listBuilder = new ItemList.Builder();
  
          String hostPackageName = mHostPackageName;
          if (hostPackageName == null) {
              // Cannot get the host package name, show an error message.
              listBuilder.setNoItemsMessage(
                      getCarContext().getString(R.string.images_unknown_host_error));
          } else {
              for (int i = 0; i < ICON_DRAWABLES.length; i++) {
                  int resId = ICON_DRAWABLES[i];
                  Uri uri = DelayedFileProvider.getUriForResource(getCarContext(), hostPackageName,
                          resId);
                  listBuilder.addItem(
                          new Row.Builder()
                                  .setImage(
                                          new CarIcon.Builder(
                                                  IconCompat.createWithContentUri(uri))
                                                  .build())
                                  .setTitle(
                                          getCarContext().getString(R.string.icon_title_prefix) + " "
                                                  + i)
                                  .build());
              }
          }
  
  
          return new ListTemplate.Builder()
                  .setSingleList(listBuilder.build())
                  .setTitle(getCarContext().getString(R.string.content_provider_icons_demo_title))
                  .setHeaderAction(BACK)
                  .build();
      }
  }
  