content: /*
   * Copyright 2017 Google Inc. All Rights Reserved.
   *
   * 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.instantappsample.service;
  
  import android.annotation.SuppressLint;
  import android.app.Service;
  import android.content.Context;
  import android.content.Intent;
  import android.os.Binder;
  import android.os.IBinder;
  import androidx.annotation.NonNull;
  import androidx.annotation.Nullable;
  
  import java.text.SimpleDateFormat;
  import java.util.Date;
  
  /**
   * A simple {@link Service} that keeps track of it's own running time.
   */
  
  public class TimekeepingService extends Service {
  
      class TimeBinder extends Binder {
          @SuppressLint("SimpleDateFormat")
          private SimpleDateFormat mFormatter = new SimpleDateFormat("mm:ss.SSS");
  
          long getTimeRunning() {
              return System.currentTimeMillis() - mStartTimeMillis;
          }
  
          String getTimeRunningFormatted() {
              return mFormatter.format(new Date(getTimeRunning()));
          }
      }
  
      private long mStartTimeMillis = 0;
  
      private TimeBinder mBinder = new TimeBinder();
  
      @NonNull
      public static Intent getIntent(Context context) {
          return new Intent(context, TimekeepingService.class);
      }
  
      @Override
      public int onStartCommand(Intent intent, int flags, int startId) {
          doSomething();
          return super.onStartCommand(intent, flags, startId);
      }
  
      @Nullable
      @Override
      public IBinder onBind(Intent intent) {
          doSomething();
          return mBinder;
      }
  
      /**
       * Kick off the service's work.
       */
      private void doSomething() {
          if (mStartTimeMillis == 0) {
              mStartTimeMillis = System.currentTimeMillis();
          }
          // This is where a service should do it's actual work.
      }
  }
  