在斯威夫特

实际上我对这个问题的解决方案是，在我的CustonViewController的viewDidLoad中加载视图，我想这样使用视图:

myAccessoryView = NSBundle.mainBundle().loadNibNamed("MyAccessoryView", owner: self, options: nil)[0] as! MyAccessoryView

不要用loadView()方法加载视图!loadView方法用于为你的自定义ViewController加载视图。

这是一个很好的问题(+1)，答案几乎是有帮助的;)抱歉，伙计们，虽然Gonso和AVeryDev都给出了很好的提示，但我花了很长时间才读完这篇文章。希望这个答案能帮助到其他人。

MyVC是持有这些东西的视图控制器。

MySubview是我们想从xib中加载的视图

In MyVC.xib, create a view of type MySubView that is the right size & shape & positioned where you want it. In MyVC.h, have IBOutlet MySubview *mySubView // ... @property (nonatomic, retain) MySubview *mySubview; In MyVC.m, @synthesize mySubView; and don't forget to release it in dealloc. In MySubview.h, have an outlet/property for UIView *view (may be unnecessary, but worked for me.) Synthesize & release it in .m In MySubview.xib set file owner type to MySubview, and link the view property to your view. Lay out all the bits & connect to the IBOutlet's as desired Back in MyVC.m, have NSArray *xibviews = [[NSBundle mainBundle] loadNibNamed: @"MySubview" owner: mySubview options: NULL]; MySubview *msView = [xibviews objectAtIndex: 0]; msView.frame = mySubview.frame; UIView *oldView = mySubview; // Too simple: [self.view insertSubview: msView aboveSubview: mySubview]; [[mySubview superview] insertSubview: msView aboveSubview: mySubview]; // allows nesting self.mySubview = msView; [oldCBView removeFromSuperview];

对我来说棘手的一点是:其他答案中的提示从xib加载了我的视图，但没有替换MyVC中的视图(呸!)——我必须自己交换。

同样，为了访问mySubview的方法，.xib文件中的view属性必须设置为mySubview。否则，它会返回一个普通的UIView。

如果有一种方法来加载mySubview直接从它自己的xib，那将摇滚，但这让我在我需要的地方。

你不应该在Interface Builder中将视图控制器的类设置为UIView的子类。这肯定是你的部分问题。保留它为UIViewController，它的子类，或者其他自定义类。

As for loading only a view from a xib, I was under the assumption that you had to have some sort of view controller (even if it doesn't extend UIViewController, which may be too heavyweight for your needs) set as the File's Owner in Interface Builder if you want to use it to define your interface. I did a little research to confirm this as well. This is because otherwise there would be no way to access any of the interface elements in the UIView, nor would there be a way to have your own methods in code be triggered by events.

If you use a UIViewController as your File's Owner for your views, you can just use initWithNibName:bundle: to load it and get the view controller object back. In IB, make sure you set the view outlet to the view with your interface in the xib. If you use some other type of object as your File's Owner, you'll need to use NSBundle's loadNibNamed:owner:options: method to load the nib, passing an instance of File's Owner to the method. All its properties will be set properly according to the outlets you define in IB.

谢谢大家。 我确实找到了做我想做的事的方法。

Create your UIView with the IBOutlets you need. Create the xib in IB, design it to you liking and link it like this: The File's Owner is of class UIViewController (No custom subclass, but the "real" one). The File Owner's view is connected to the main view and its class is declared as the one from step 1). Connect your controls with the IBOutlets. The DynamicViewController can run its logic to decide what view/xib to load. Once its made the decission, in the loadView method put something like this: NSArray* nibViews = [[NSBundle mainBundle] loadNibNamed:@"QPickOneView" owner:self options:nil]; QPickOneView* myView = [ nibViews objectAtIndex: 1]; myView.question = question;

就是这样!

主bundle的loadNibNamed方法将负责初始化视图和创建连接。

现在ViewController可以根据内存中的数据显示一个视图或另一个视图，而“父”屏幕不需要为这个逻辑而烦恼。

这是一件应该比较容易的事情。我最终扩展了UIViewController并添加了一个loadNib:inPlaceholder: selector。现在我可以说

self.mySubview = (MyView *)[self loadNib:@"MyView" inPlaceholder:mySubview];

下面是这个类别的代码(它和Gonso描述的一样):

@interface UIViewController (nibSubviews)

- (UIView *)viewFromNib:(NSString *)nibName;
- (UIView *)loadNib:(NSString *)nibName inPlaceholder:(UIView *)placeholder;

@end

@implementation UIViewController (nibSubviews)

- (UIView *)viewFromNib:(NSString *)nibName
{
  NSArray *xib = [[NSBundle mainBundle] loadNibNamed:nibName owner:self options:nil]; 
  for (id view in xib) { // have to iterate; index varies
    if ([view isKindOfClass:[UIView class]]) return view;
  }
  return nil;
}

- (UIView *)loadNib:(NSString *)nibName inPlaceholder:(UIView *)placeholder
{
  UIView *nibView = [self viewFromNib:nibName];
  [nibView setFrame:placeholder.frame];
  [self.view insertSubview:nibView aboveSubview:placeholder];
  [placeholder removeFromSuperview];
  return nibView;
}

@end

我将使用UINib实例化一个自定义的UIView被重用

UINib *customNib = [UINib nibWithNibName:@"MyCustomView" bundle:nil];
MyCustomViewClass *customView = [[customNib instantiateWithOwner:self options:nil] objectAtIndex:0];
[self.view addSubview:customView];

本例中需要的文件是MyCustomView。mycustomviewclass . xib、MyCustomViewClass.h和MyCustomViewClass.m 注意，[UINib instantiatewiowner]返回一个数组，所以你应该使用反映你想要重用的UIView的元素。在这个例子中，它是第一个元素。