在界面构建器中添加的自定义UIView不会加载xib

正如您所知,UIViewController我们有-initWithNibName:bundle:一种方法可以将它与xib连接起来.
但是......
当涉及到a时UIView,你需要使用-loadNibNamed:owner:options:xib 来加载它.(只是在xib中为视图指定自定义类将不起作用)

假设:

创建了一个UIView名为的子类CustomXIBView

(新文件> Cocoa Touch> Objective-C类 - 子类UIView)

创建了一个简单的视图用户界面并命名它 CustomXIBView

(新文件>用户界面>查看)

脚步:

转到CustomXIBView笔尖

选择View(左侧工具栏)

选择Show Identity Inspector(右侧面板中的第3个选项)

指定CustomXIBView作为自定义类的View

不要做任何CustomXIBView的File's Owner在笔尖

拖放对象并将其连接 CustomXIBView.h

码:

//To load `CustomXIBView` from any `UIViewController` or other class: 
//instead of the following commented code, do the uncommented code
//CustomXIBView *myCustomXIBViewObj = [CustomXIBView alloc] init];
//[myCustomXIBViewObj setFrame:CGRectMake(0,0,320,480)];

//Do this:
CustomXIBView *myCustomXIBViewObj = 
     [[[NSBundle mainBundle] loadNibNamed:@"someView"
                                    owner:self
                                  options:nil]
                            objectAtIndex:0];
[myCustomXIBViewObj setFrame:CGRect(0, 
                                    0, 
                                    myCustomXIBViewObj.frame.size.width, 
                                    myCustomXIBViewObj.frame.size.height)];
[self.view addSubview:myCustomXIBViewObj];

参考:http://eppz.eu/blog/uiview-from-xib/