title: Clearing intent
body: <p>My Android app is getting called by an intent that is passing information (pendingintent in statusbar).</p>
  
  <p>When I hit the home button and reopen my app by holding the home button it calls the intent again and the same extras are still there.</p>
  
  <pre><code>    @Override
      public void onSaveInstanceState(Bundle savedInstanceState) {
        super.onSaveInstanceState(savedInstanceState);
      }
      @Override
      public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
      }
  </code></pre>
  
  <p>this is the code that doesn't run like its supposed to</p>
  
  <pre><code>    String imgUrl;
      Bundle extras = this.getIntent().getExtras();
  
  
      if(extras != null){
          imgUrl = extras.getString("imgUrl");
          if( !imgUrl.equals(textView01.getText().toString()) ){
  
              imageView.setImageDrawable( getImageFromUrl( imgUrl ) );
              layout1.setVisibility(0);
              textView01.setText(imgUrl);//textview to hold the url
  
          }
  
      }
  </code></pre>
  
  <p>And my intent:</p>
  
  <pre><code>public void showNotification(String ticker, String title, String message, 
      String imgUrl){
      String ns = Context.NOTIFICATION_SERVICE;
      NotificationManager mNotificationManager = 
          (NotificationManager) getSystemService(ns);
      int icon = R.drawable.icon;        // icon from resources
      long when = System.currentTimeMillis();         // notification time
      CharSequence tickerText = ticker;              // ticker-text
  
      //make intent
      Intent notificationIntent = new Intent(this, activity.class);
      notificationIntent.putExtra("imgUrl", imgUrl);
      notificationIntent.setFlags(
          PendingIntent.FLAG_UPDATE_CURRENT | 
          PendingIntent.FLAG_ONE_SHOT);
      PendingIntent contentIntent = 
          PendingIntent.getActivity(this, 0, 
          notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT | 
          PendingIntent.FLAG_ONE_SHOT);
  
      //make notification
      Notification notification = new Notification(icon, tickerText, when);
      notification.setLatestEventInfo(this, title, message, contentIntent);
      //flags
      notification.flags = Notification.FLAG_SHOW_LIGHTS | 
          Notification.FLAG_ONGOING_EVENT | 
          Notification.FLAG_ONLY_ALERT_ONCE | 
          Notification.FLAG_AUTO_CANCEL;
      //sounds
      notification.defaults |= Notification.DEFAULT_SOUND;
      //notify
      mNotificationManager.notify(1, notification);
  }
  </code></pre>
  
  <p>Is there any way to clear the intent or check whether it has been used before?</p>