code: public static boolean openNotification() throws Exception {
          boolean success = false;
  
          // get API level
          int apiLevel = Client.getInstance().mapField("android.os.Build$VERSION", "SDK_INT").getInt(0);
  
          if (apiLevel >= 18) {
              success = Client.getInstance().map(Constants.UIAUTOMATOR_UIDEVICE, "openNotification").getBoolean(0);
          } else {
              // try a brute force method
              int displayHeight = getDisplayHeight();
  
              // Calculated a Y position to pull down to that is the display height minus 10%
              int pullTo = displayHeight - (int)((double)displayHeight * .1);
  
              Client.getInstance().map(Constants.UIAUTOMATOR_UIDEVICE, "swipe", 10, 0, 10, pullTo, 100);
              success = true;
          }
          return success;
      }
docs: Open notification shade
  @return
  @throws Exception