code: public SuperActivityToast setProgress(int progress) {
          if (this.mProgressBar == null) {
              Log.e(getClass().getName(), "Could not set SuperActivityToast " +
                      "progress, are you sure you set the type to TYPE_PROGRESS_CIRCLE " +
                      "or TYPE_PROGRESS_BAR?");
              return this;
          }
          this.mStyle.progress = progress;
          this.mProgressBar.setProgress(progress);
          return this;
      }
docs: Set the progress of the ProgressBar in a TYPE_PROGRESS_BAR SuperActivityToast.
  This can be called multiple times after the SuperActivityToast is showing.
  
  @param progress The desired progress
  @return The current SuperActivityToast instance