NSFetchRequest *fetchLLObjects = [[NSFetchRequest alloc] init];
[fetchLLObjects setEntity:[NSEntityDescription entityForName:@"CustomerOrder" inManagedObjectContext:self.managedObjectContext]];
[fetchLLObjects setIncludesPropertyValues:NO]; //only fetch the managedObjectID
NSError *error = nil;
NSArray *allObjects = [self.managedObjectContext executeFetchRequest:fetchLLObjects error:&error];
这里阵列被示出为零的数据。但在数据库中我可以看到有数据。我不知道可能是什么原因。如何获取从NSManaged对象上下文
注释掉setIncludesPropertyValues:NO。结果仍然是零? – bilobatum
是的,我仍然得到零值。获取请求后, –
错误对象是否为零? – bilobatum