NSDistantObject类上的NSStringFromClass和isKindofClass

Question

我有NSDistantObject类对象的数组。

NSLog(@"%@", [[saveClassObject objectAtIndex:0] connectionForProxy]);
        NSLog(@"%@", NSStringFromClass([[saveClassObject objectAtIndex:0] class]));
        if ([[saveClassObject objectAtIndex:0] isKindOfClass:[NSDistantObject class]]) {
            NSLog(@"Yes");
        }
        else {
            NSLog(@"NO");
        }  

Obove代码的输出是

2011-10-20 20:49:58.841 DistributedServer[4239:a0f] (** NSConnection 0x10013ec80 receivePort <CFSocket 0x1001133d0 [0x7fff70289ee0]>{valid = Yes, type = 1, socket = 3, socket set count = 140733193388036,
    callback types = 0x2, callout = __NSFireSocketAccept (0x7fff8254e74a), source = 0x10010abb0,
    run loops = <CFArray 0x10015f930 [0x7fff70289ee0]>{type = mutable-small, count = 4, values = (
    0 : <0x100112870>
    1 : <0x100112870>
    2 : <0x1001126a0>
    3 : <0x1001126a0>
)},
    context = <CFSocket context 0x1002000b0>} sendPort <02010610 1002c323 c0a801ae 00000000 00000000> refCount 3 **)
2011-10-20 20:49:58.842 DistributedServer[4239:a0f] NSDistantObject
2011-10-20 20:49:58.844 DistributedServer[4239:a0f] NO

NSStringFromClass返回saveClassObject数组，其中包含NSDistantObject类对象。isKindofClass同样返回No。为什么？

Answer 1

NSProxy的-isKindOfClass:电话forwardInvocation:。它旨在测试代理所代表的对象的类，而不是代理本身。

• 要检查您拥有的对象是否是代理，您可能需要使用它isProxy。
• 要检查代理的类，可以检查它是否class等于[NSDistantObject class]或isSubclassOfClass:。