ios runtime 动态向类添加方法

1、定义C函数：

void dynamicMethodIMP(id self, SEL _cmd)

{

    NSLog(@"蜗牛也疯狂");

}

2、重写函数+(BOOL)resolveInstanceMethod:(SEL)sel

+(BOOL)resolveInstanceMethod:(SEL)sel

{

    class_addMethod([self class], sel, (IMP)dynamicMethodIMP, "v@:");

    return [super resolveInstanceMethod:sel];

}

3、使用：

 SEL select = NSSelectorFromString(@"resolveThisMethodDynamically");

    [class resolveInstanceMethod:select];

    [[class instance] performSelector:select];

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ios runtime 动态向类添加方法

原文：http://blog.csdn.net/wnyfk/article/details/25623439