iOS开发之多XIB之间相互关联

1. 直接加载xib中的UIView

创建一个View1.xib

直接加载Xib中view

获取View1代码：

NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"View1"
                                               owner:nil
                                             options:nil];
UIView *view1 = [views lastObject];

2. 通过Owner建立变量关联

File's Owner为NSObject类型，可以使用UIViewController，也可一创建一个继承NSObject的子类ViewFileOwner，以创建ViewFileOwner为例。

在ViewFileOnwer中声明IBOutLet的关联变量view：

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface ViewFileOwner : NSObject

@property (weak, nonatomic) IBOutlet UIView *view;
+ (id)viewFromNibNamed:(NSString *)nibName;

@end

#import "ViewFileOwner.h"

@implementation ViewFileOwner

+ (id)viewFromNibNamed:(NSString *)nibName
{
    ViewFileOwner *fileOwner = [ViewFileOwner new];
    [[NSBundle mainBundle] loadNibNamed:nibName
                                  owner:fileOwner
                                options:nil];
    return fileOwner.view;
}

@end

创建一个YZOwnerView.xib，File's Owner设为ViewFileOnwer，并建立关联，如下：

建立File's Owner关联

获取Xib View代码：

ViewFileOwner *fileOwner = [ViewFileOwner new];
[[NSBundle mainBundle] loadNibNamed:@"YZOwnerView"
                              owner:fileOwner
                            options:nil];
UIView *view = fileOwner.view;

可以建立UIView的Category，封装方法，简化添加代码

#import <UIKit/UIKit.h>

@interface UIView (XibHelper)
+ (id)loadFromNibName:(NSString *)nibName;
+ (id)loadFromNib;

@end

#import "UIView+XibHelper.h"
#import "ViewFileOwner.h"

@implementation UIView (XibHelper)

+ (id)loadFromNibName:(NSString *)nibName
{
    return [ViewFileOwner viewFromNibNamed:nibName];
}

+ (id)loadFromNib
{
    return [[self class] loadFromNibName:NSStringFromClass([self class])];
}

@end

可直接这样调用：UIView *view = [UIView loadFromNibName:@"YZOwnerView"];

如果建立UIView的子类YZView关联了Xib中View，可直接调用：YZView *view = [YZView loadFromNib];

建立File's Owner关联
UIView子类关联

参考文章：iOS开发之多XIB之间相互关联