ios - 如果同时在两个UIViewControllers中调用[[RKClient sharedClient] get @“foo.xml”委托(delegate):自我]，那将会是什么？

如果同时在两个UIViewController中调用[[RKClient sharedClient] get @“ foo.xml”委托：自我]，那会是什么？我有什么问题吗？

viewController_A
{
[[RKClient sharedClient] get:@"foo.xml" delegate:self];
}

viewController_B
{
 [[RKClient sharedClient] get:@"foo.xml" delegate:self];
}

最佳答案

如果您查看get:delegate:的RKClient实现，只需执行此操作

- (RKRequest *)get:(NSString *)resourcePath delegate:(id)delegate {
    return [self load:resourcePath method:RKRequestMethodGET params:nil delegate:delegate];
}

而load:method:params:delegate:的实现是

- (RKRequest *)load:(NSString *)resourcePath method:(RKRequestMethod)method params:(NSObject<RKRequestSerializable> *)params delegate:(id)delegate {
    NSURL* resourcePathURL = nil;
    if (method == RKRequestMethodGET) {
        resourcePathURL = [self URLForResourcePath:resourcePath queryParams:(NSDictionary*)params];
    } else {
        resourcePathURL = [self URLForResourcePath:resourcePath];
    }
    RKRequest *request = [[RKRequest alloc] initWithURL:resourcePathURL delegate:delegate];
    [self setupRequest:request];
    [request autorelease];
    request.method = method;
    if (method != RKRequestMethodGET) {
        request.params = params;
    }

    [request send];

    return request;
}

它不使用任何RKClient状态/共享数据，因此不会出现问题。方法get：delegate：本身是异步的，因此无论如何这些事情都会在后台发生。

关于ios - 如果同时在两个UIViewControllers中调用[[RKClient sharedClient] get @“foo.xml”委托(delegate):自我]，那将会是什么？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8193089/