Question

I want all the variables names or attributes of a interface or class in objective c.

I am able to get and set the value for a variable dynamically using valueForKey: message.

Answer 1

If you are looking to get all ‘properties’ for a class, you can utilize the Objective-C runtime to get this data:

unsigned int propertyCount, i;
objc_property_t *properties = class_copyPropertyList([self class], &propertyCount);

for(i = 0; i < propertyCount; i++)
{
    objc_property_t property = properties[i];
    NSString *propertyName = [NSString stringWithUTF8String:property_getName(property)];
}

free(properties);

With this object you can get all of the metadata associated with a given property. This isn’t for the faint of heart though (and it is a C based API). Determining information about each property (like it’s policy and type) isn’t simple.