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objc runtime associate objects
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| // | |
| // UIViewController+Extensions.h | |
| // | |
| // Created by thanhvu on 7/21/19. | |
| // Copyright © 2019 thanhvu. All rights reserved. | |
| // | |
| #import <UIKit/UIKit.h> | |
| NS_ASSUME_NONNULL_BEGIN | |
| @interface UIViewController (Extensions) | |
| @property (nonatomic, strong) NSString *screenName; | |
| @end | |
| NS_ASSUME_NONNULL_END |
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| // | |
| // UIViewController+Extensions.m | |
| // | |
| // Created by thanhvu on 7/21/19. | |
| // Copyright © 2019 thanhvu. All rights reserved. | |
| // | |
| #import "UIViewController+Extensions.h" | |
| #import <objc/runtime.h> | |
| @implementation UIViewController (Extensions) | |
| -(void)setScreenName:(NSString *)screenName | |
| { | |
| objc_setAssociatedObject(self, @selector(screenName), screenName, OBJC_ASSOCIATION_RETAIN_NONATOMIC); | |
| } | |
| -(NSString *)screenName { | |
| return objc_getAssociatedObject(self, @selector(screenName)); | |
| } | |
| @end |
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