UIViewController initWithNibName结果为nil

问题描述

我正在尝试制作一个视图控制器，该视图控制器将始终加载相同的笔尖.我的初始化代码如下:

I'm trying to make a view controller that will always load the same nib. My initialization code looks like this:

-(id)init
{
    NSString* nibName;

    if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
        nibName = @"XIB_iPad";
    else
        nibName = @"XIB_iPhone";

    self = [super initWithNibName:nibName bundle:nil];
    if (self)
    {
        ...
    }
    return self;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    return [self init];
}

问题在于此代码导致视图控制器具有nil视图.我在这里做错什么了吗?有更好的方法吗?

The problem is that this code results in the view controller having a nil view. Is there something I'm doing wrong here? Is there a better way to do this?

谢谢.

推荐答案

检查以下内容:

1. 您的项目中同时存在XIB_iPad.xib和XIB_iPhone.xib.
2. 每个xib文件的文件所有者"具有正确的类(YourViewController).
3. 每个文件所有者视图出口(在xib文件中)已正确链接查看.

1. Both XIB_iPad.xib and XIB_iPhone.xib exist in your project.
2. Each xib file's "File owner" is of the correct class (YourViewController).
3. Each File Owner view outlet (in the xib files) is linked correctlyto a view.

如果在检查完这三个步骤后仍然遇到问题，请提供用于实例化和设置自定义视图控制器的代码.

If you keep having problems after you check these three steps, please provide with the code you use to instantiate and setup your custom view controller.

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