最近看了一些runtime的使用方法，之前一直靜不下心來看，記錄一下方便以后查看

通過字符串獲取方法

 SEL selector = NSSelectorFromString(@"getMethod");

兩個方法的替換

BOOL result = class_replaceMethod([self class], @selector(method0), (IMP)method1, NULL);

方法的交換

method0方法的觸發(fā)交換到method1接收

    SEL originalSelector = NSSelectorFromString(@"method0");
    SEL swizzledSelector = NSSelectorFromString(@"method1");
    Method originalMethod = class_getInstanceMethod([self class], originalSelector);
    Method swizzledMethod = class_getInstanceMethod([self class], swizzledSelector);
    method_exchangeImplementations(originalMethod, swizzledMethod);

為類別新增一個屬性

類別新增屬性需要關聯(lián)當前的對象

   #pragma mark- 利用runtime為類別添加屬性
-(void)setProperty1:(NSString *)property1{
    //需要關聯(lián)對象
    objc_setAssociatedObject(self, "property", property1, OBJC_ASSOCIATION_COPY_NONATOMIC);
}
-(NSString *)property1{
    return objc_getAssociatedObject(self, "property");
}

獲取類所有的屬性

   objc_property_t *propertys = class_copyPropertyList([self class], &copyIvarListCount);
    for (NSInteger i = 0; i<copyIvarListCount; i++) {
        objc_property_t property = propertys[i];
        const char *name = property_getName(property);
        NSLog(@">>>>>>class_copyPropertyList==:%s",name);
    }
  //需要釋放
    free(propertys);

獲取整個類的實例方法的方法列表

   Method *methods = class_copyMethodList([self class], &copyIvarListCount);
    for (NSInteger i = 0; i<copyIvarListCount; i++) {
        Method method = methods[i];
        SEL name = method_getName(method);
        NSLog(@">>>>>>class_copyMethodList==:%@",NSStringFromSelector(name));
    }
  //需要釋放
    free(methods);

獲取整個成員變量列表

unsigned int copyIvarListCount = 0;
    Ivar *ivars = class_copyIvarList([self class], &copyIvarListCount);
    for (NSInteger i=0; i<copyIvarListCount; i++) {
        Ivar ivar = ivars[i];
        const char *name = ivar_getName(ivar);
        NSLog(@">>>>>>class_copyIvarList==:%s",name);
    }
    free(ivars);//需要釋放

獲取所有繼承的協(xié)議

Protocol * __unsafe_unretained *protocals = class_copyProtocolList([self class], &copyIvarListCount);
    for (NSInteger i = 0; i<copyIvarListCount; i++) {
        Protocol *protocal = protocals[i];
        const char *name = protocol_getName(protocal);
        NSLog(@">>>>>>class_copyProtocolList==:%s",name);
    }
    free(protocals);