在我們使用一些第三方庫時有些屬性並沒有暴露在外面為公有屬性。

這裡分享一個方法可以獲取私有屬性的方法。

NSObject+RunTimeUtility.h

//
//  NSObject+RunTimeUtility.h
//  RunTimeStudy
//
//  Created by dujia on 16/1/15.
//  Copyright © 2016年 杜甲. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSObject (RunTimeUtility)

- (id)getPrivateProperty:(NSString *)propertyName;

@end
 

//
//  NSObject+RunTimeUtility.m
//  RunTimeStudy
//
//  Created by dujia on 16/1/15.
//  Copyright © 2016年 杜甲. All rights reserved.
//

#import "NSObject+RunTimeUtility.h"
#import <objc/runtime.h>
@implementation NSObject (RunTimeUtility)
- (id)getPrivateProperty:(NSString *)propertyName
{
    Ivar iVar = class_getInstanceVariable([self class], [@"address" UTF8String]);
    
    if (iVar == nil) {
        iVar = class_getInstanceVariable([self class], [[NSString stringWithFormat:@"_%@",@"address"] UTF8String]);
    }
    
    id propertyVal = object_getIvar(self, iVar);
    return propertyVal;
}
@end
 

程式碼下載：http://download.csdn.net/detail/qqmcy/9407347