title: TIMEZONE_CHANGED intent being received every few seconds
body: <p>I use a BroadcastReceiver with TIMEZONE_CHANGED action to reset alarms using AlarmManager just to make sure that the alarm runs exactly at the set time, not a few hours earlier or later, depending on the time zone change.</p>
  
  <p>However in the latest log sent by the user, I saw information about intent with TIMEZONE_CHANGED action being received every few seconds with the user complaining about app being glitchy.</p>
  
  <p>Here's my BroadcastReceiver's onReceive code</p>
  
  <pre><code>@Override
  public void onReceive(Context context, Intent intent) {
      Utils.log("OnTimeChange");
      String action = intent.getAction();
  
      if (action.equals(Intent.ACTION_TIME_CHANGED)) {
          Utils.log("TimeChange");
      } else if (action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
          Utils.log("TimeZoneChanged");
      }
      BroadcastsManager.updateBroadcastsFromAlarms(context,
              AlarmsDbAdapter.getInstance(context));
  }
  </code></pre>
  
  <p>The manifest's intent filter:</p>
  
  <pre><code>&lt;intent-filter&gt;
      &lt;action android:name="android.intent.action.TIMEZONE_CHANGED" /&gt;
      &lt;action android:name="android.intent.action.TIME_SET" /&gt;
  &lt;/intent-filter&gt;
  </code></pre>
  
  <p>And part of the log (it goes like that for over an hour - full lenght of the log)</p>
  
  <pre><code>1. 19/4 7:41:54 - posting alarm 3 for 8:15 (in 0h)
  2. 19/4 7:44:29 - OnTimeChange
  3. 19/4 7:44:29 - TimeZoneChanged
  4. 19/4 7:44:29 - posting alarm 3 for 8:15 (in 0h)
  5. 19/4 7:44:54 - OnTimeChange
  6. 19/4 7:44:54 - TimeChange
  7. 19/4 7:44:54 - posting alarm 3 for 8:15 (in 0h)
  </code></pre>
  
  <p>It's a Samsung Galaxy S III (Android v 4.1.2). The strange thing is, that doesn't happen on my S III.
  Could it be that the user has set "automatic timezone change by provider" option enabled on his/her device and information like that is sent every few seconds? </p>
  
  <p>Has anyone expierienced it? I guess I will just add an option to check if timezone has actually changed before updating broadcasts, but it is still getting the receiver called every few seconds...</p>