/**
   * A simple executor which passes tasks to the main UI thread for execution.
   * Use this if your task needs to interact with the view hierarchy, such as
   * updating displayed values, sending intents, etc.
   *
   * @author mrenouf@google.com (Mark Renouf)
   *
   */
  public class UiThreadExecutor implements Executor {
    private final Handler handler;

    public UiThreadExecutor() {

      this.handler = new Handler(Looper.getMainLooper());
    }

    @Override
    public void execute(Runnable command) {
      handler.post(command);
    }
  }