content: /*
   * Copyright (C) 2014 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.leanback.leanbackshowcase.utils;
  
  import android.content.ContentResolver;
  import android.content.Context;
  import android.net.Uri;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  /**
   * A collection of utility methods, all static.
   */
  public class Utils {
  
      public static int convertDpToPixel(Context ctx, int dp) {
          float density = ctx.getResources().getDisplayMetrics().density;
          return Math.round((float) dp * density);
      }
  
      /**
       * Will read the content from a given {@link InputStream} and return it as a {@link String}.
       *
       * @param inputStream The {@link InputStream} which should be read.
       * @return Returns <code>null</code> if the the {@link InputStream} could not be read. Else
       * returns the content of the {@link InputStream} as {@link String}.
       */
      public static String inputStreamToString(InputStream inputStream) {
          try {
              byte[] bytes = new byte[inputStream.available()];
              inputStream.read(bytes, 0, bytes.length);
              String json = new String(bytes);
              return json;
          } catch (IOException e) {
              return null;
          }
      }
  
      public static Uri getResourceUri(Context context, int resID) {
          return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" +
                                   context.getResources().getResourcePackageName(resID) + '/' +
                                   context.getResources().getResourceTypeName(resID) + '/' +
                                   context.getResources().getResourceEntryName(resID));
      }
  }
  