如何从显示的视图控制器上的按钮操作推送viewcontroller

我认为您首先需要关闭当前的视图控制器(loginViewController),并在完成块中推送新的视图控制器。因此,在登录视图控制器中,尝试以下操作:

let presentingController = self.presentingViewController
self.dismiss(animated: true) {
    presentingController?.navigationController?.pushViewController(NewViewController(), animated: true)
}

您可以使用委托指示显示视图控制器减小模式并推送所需的视图控制器

是否尝试添加动画

CATransition *transition = [[CATransition alloc] init];
transition.duration = 0.5;
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromRight;
[transition setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[self.view.window.layer addAnimation:transition forKey:kCATransition];
[self presentViewController:dashboardWorkout animated:false completion:nil];