iOS 用runtime给button的Category写text属性，设置title

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头文件

#import <UIKit/UIKit.h>

@interface UIButton (tool)

@property (nonatomic , copy)NSString *text;

@end

.m文件

#import "UIButton+tool.h"

#import <objc/runtime.h>

@implementation UIButton (tool)

-(void)setText:(NSString *)text{

    

 objc_setAssociatedObject(self, @"text", text, OBJC_ASSOCIATION_COPY);

    [self setTitle:text forState:UIControlStateNormal];

}

-(NSString *)text{

    return objc_getAssociatedObject(self,@"text");

}

@end

调用

button.text = @"获取";

亲测有效