title: error:Attempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null object reference
body: <pre><code>public class AlarmTask implements Runnable{
  // The date selected for the alarm
  private final Calendar date;
  // The android system alarm manager
  private final AlarmManager am;
  // Your context to retrieve the alarm manager from
  private final Context context;
  
  public AlarmTask(Context context, Calendar date) {
  
      this.context = context;
      this.am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); //error for this line
      this.date = date;
  }
  </code></pre>
  
  <p>There are similar questions, but after banging my head I couldn't sort out the problem. I am getting these following errors! Is it due to fragments?</p>
  
  <pre><code>java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null object reference
          at android.content.ContextWrapper.getSystemService(ContextWrapper.java:562)
          at lol.com.epl.AlarmTask.&lt;init&gt;(AlarmTask.java:24)
          at lol.com.epl.ScheduleService.setAlarm(ScheduleService.java:47)
          at lol.com.epl.ScheduleClient.setAlarmForNotification(ScheduleClient.java:58)
          at lol.com.epl.FixFragment.onCreateView(FixFragment.java:88)
          at android.support.v4.app.Fragment.performCreateView(Fragment.java:1962)
          at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1026)
          at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1207)
          at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
          at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1572)
          at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:493)
          at android.os.Handler.handleCallback(Handler.java:739)
          at android.os.Handler.dispatchMessage(Handler.java:95)
          at android.os.Looper.loop(Looper.java:135)
          at android.app.ActivityThread.main(ActivityThread.java:5257)
          at java.lang.reflect.Method.invoke(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:372)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
  </code></pre>
  
  <p>This is how I am calling the class</p>
  
  <pre><code> public void setAlarm(Calendar c) {
      // This starts a new thread to set the alarm
      // You want to push off your tasks onto a new thread to free up the UI to carry on responding
      new AlarmTask(this, c).run();
  }
  </code></pre>
  
  <p>This is where I call the setAlarm function</p>
  
  <pre><code>  public void setAlarmForNotification(Calendar c){
      ScheduleService mBoundService = new ScheduleService();
      mBoundService.setAlarm(c);
           }
  </code></pre>