按属性IN数组过滤核心数据结果

Event

NSManagedObjectContext *context = [delegate managedObjectContext];
NSEntityDescription *entityDescription = [NSEntityDescription entityForName:@\"Event\" 
                                                     inManagedObjectContext:context];
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:entityDescription];

NSError *error;
NSArray *fetchResults = [context executeFetchRequest:request error:&error];

filterArray

filterArray

NSPredicate *predicate = [NSPredicate predicateWithFormat:@\"tid IN %@\", filterArray];

[request setPredicate:predicate];

tid