工具类：快速加载 xib（UIView 分类）

#import <UIKit/UIKit.h>

@interface UIView (####Xib)
+ (instancetype)viewFromXib;
+ (instancetype)viewFromXibName:(NSString *)name;

@end

#import "UIView+CZXib.h"

@implementation UIView (####Xib)
+ (instancetype)viewFromXib {
return [[[NSBundle mainBundle]loadNibNamed:NSStringFromClass(self) owner:nil options:nil]lastObject];
}

+ (instancetype)viewFromXibName:(NSString *)name {
return [[[NSBundle mainBundle]loadNibNamed:name owner:nil options:nil]lastObject];
}
@end