我是 Reactive Cocoa 的新手,我想知道是否有人可以帮助我解决这个问题:
这是给我带来麻烦的代码片段:
[[[self getFormItemAttachmentHeaders:listName
topListItemID:form.topListItemID
form:form
] map:^id(NSMutableArray* value) {
NSArray* attachmentHeaders = [value copy];
return attachmentHeaders;
}
] subscribeNext:^(NSArray* attachmentHeaders) {
return [self uploadFormItemAttachments:pendingAttachments
attachmentHeaders:attachmentHeaders
form:form];
}
];
这段代码是从一个 RACsignal 对象中调用的,其方法与定义如下:
RACSignal* batchSignal = [RACSignal createSignal:^RACDisposable *(id<RACSubscriber> subscriber) {
[pendingAttachments enumerateObjectsUsingBlock:^(SEFSManagedAttachment* pendingImage, NSUInteger idx, BOOL *stop) {
以下代码行:
return [self uploadFormItemAttachments:pendingAttachments
attachmentHeaders:attachmentHeaders
form:form];
生成错误:
Incompatible block pointer types sending 'RACSignal *(^)(NSArray *__strong)' to parameter of type 'void (^)(__strong id)'