代码改变世界

[转]object-c 的reflection

2011-04-22 23:40  wuxiaoqqqq  阅读(312)  评论(0)  编辑  收藏  举报
// Without reflection
Foo *foo = [[Foo alloc] init];
[foo hello];
 
// With reflection
Class cls = NSClassFromString(@"Foo");
id foo = [[cls alloc] init];
SEL selector = NSSelectorFromString(@"hello");
[foo performSelector:selector withObject:nil];