content: /*
   * Copyright (C) 2016 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 com.example.android.networkconnect;
  
  import android.net.NetworkInfo;
  import android.support.annotation.IntDef;
  
  /**
   * Sample interface containing bare minimum methods needed for an asynchronous task
   * to update the UI Context.
   */
  
  public interface DownloadCallback {
      interface Progress {
          int ERROR = -1;
          int CONNECT_SUCCESS = 0;
          int GET_INPUT_STREAM_SUCCESS = 1;
          int PROCESS_INPUT_STREAM_IN_PROGRESS = 2;
          int PROCESS_INPUT_STREAM_SUCCESS = 3;
      }
  
      /**
       * Indicates that the callback handler needs to update its appearance or information based on
       * the result of the task. Expected to be called from the main thread.
       */
      void updateFromDownload(String result);
  
      /**
       * Get the device's active network status in the form of a NetworkInfo object.
       */
      NetworkInfo getActiveNetworkInfo();
  
      /**
       * Indicate to callback handler any progress update.
       * @param progressCode must be one of the constants defined in DownloadCallback.Progress.
       * @param percentComplete must be 0-100.
       */
      void onProgressUpdate(int progressCode, int percentComplete);
  
      /**
       * Indicates that the download operation has finished. This method is called even if the
       * download hasn't completed successfully.
       */
      void finishDownloading();
  
  }
  