无法在Swift 3中使用MMDrawerController显示抽屉菜单

Question

请提出解决方案。 我在Xcode 10 Swift 3中使用MMDrawerController作为导航抽屉菜单。 滑动时显示OKAY，但按下按钮时抽屉菜单不显示。 我在那个按钮上做了IBAction，如下所示：

#-- Plots
plots <- list()
combinations <- combn(dim(ssgsea.diff)[2],2)

for (i in 1:dim(combinations)[2]){

  fit <- lm(ssgsea.diff[,combinations[1,i]] ~ ssgsea.diff[,combinations[2,i]], 
            data = ssgsea.diff)

  plot1 <- ggplot(ssgsea.diff) + 
    aes(ssgsea.diff[,combinations[1,i]], ssgsea.diff[,combinations[2,i]]) + 
    geom_point()

  plot1 <- plot1 + 
    labs(x = names(ssgsea.diff)[combinations[1,i]], 
         y = names(ssgsea.diff)[combinations[2,i]]) + 
    geom_smooth(method="lm", col = "red") + 
    labs(title = paste("Adj R2 = ", signif(summary(fit)$adj.r.squared, 5), 
                       " Slope =",signif(fit$coef[[2]], 5), 
                       " Pval =",signif(summary(fit)$coef[2,4], 5)))

  plots[[i]] <- plot1
}

当从登录视图通过登录按钮跳入中央屏幕时，登录按钮IBAction的代码如下：

    @IBAction func onNavTapped(_ sender: Any) {

    let appDelegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
    appDelegate.centerContainer?.toggle(MMDrawerSide.left, animated: true, completion: nil)


}