在Swift中将View控制器添加为子视图 [英] Adding View controllers as subview in Swift

问题描述

我正在尝试使用swift构建一个简单的计算器应用。我用基本和高级选项创建了两个视图控制器。以前在Obj-C中曾经这样做过

Am trying to build a simple calculator app using swift. I have created two view controller with the basic and advanced options. Earlier in Obj-C used to do this

[[AViewController alloc] initWithNibName:@"nibName" bundle:nil]

很快，我什至无法导入新的视图控制器。但是我仍然可以声明为 var aViewController：AViewController？并使用它。但是我被困在加载笔尖

In swift I cannot even import my new view controllers. But still I can declare as var aViewController:AViewController? and use it. But I am stuck at loading nib

我尝试了 AViewController（nibName： nibname，bundle：nil） ，但一切都会导致编译器错误找不到接受提供的参数的__conversion的重载

I tried with AViewController(nibName: "nibname", bundle: nil), but everything results in compiler error Could not find an overload for __conversion that accepts the supplied arguments

推荐答案

像 nil 一样，当我用 NSBundle.mainBundle（）可行。

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