无法在名为“SecondViewController”的包中加载NIB

Question

我正在尝试将Navigator Controller推送到另一个视图控制器，但我不断收到错误，说明无法加载nib包名称。这是我正在使用的代码：

SecondViewController *vc1 = [[SecondViewController alloc]
      initWithNibName:NSStringFromClass([SecondViewController class]) bundle:Nil];
[self.navigationController pushViewController:vc1 animated:YES];

Answer 1

您必须传递nib文件的名称，而不是类名：

// Assuming there is a properly set up SecondViewController.xib in your project.
SecondViewController *vc1 = [[SecondViewController alloc] 
                            initWithNibName:@"SecondViewController" bundle:nil];
[self.navigationController pushViewController:vc1 animated:YES];

修改

如果您正在使用Storyboard，则必须以不同方式加载GUI：

UIStoryboard *sboard = [UIStoryboard storyboardWithName:@"StoryboardFileName" 
                                                 bundle:nil];
SecondViewController *vc1 = [sboard instantiateInitialViewController];