NSPredicate 过滤多个字符串

Question

如何制作一个同时过滤多个对象的 NSPredicate？以下内容非常适合一个对象（在本例中为 KDED），但我正在尝试使用 swift2 同时获取例如 KDED、KDAB 和 KOMN。

let fetchRequest = NSFetchRequest(entityName: "Airport")
let sortDescriptor = NSSortDescriptor(key: "code", ascending: true)
fetchRequest.sortDescriptors = [sortDescriptor]
let predicate = NSPredicate(format: "code ==%@", "KDED")
    fetchRequest.predicate = predicate

if let managedObjectContext = (UIApplication.sharedApplication().delegate as? AppDelegate)?.managedObjectContext {

    fetchResultController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: managedObjectContext, sectionNameKeyPath: nil, cacheName: nil)
    fetchResultController.delegate = self

    do {
        try fetchResultController.performFetch()
        Airports = fetchResultController.fetchedObjects as! [Airport]
    } catch {
       print(error)
    }
}

Answer 1

使用IN运算符：

let predicate = NSPredicate(format: "code IN %@", ["KDED", "KDAB", "KOMN"])

NSPredicate 过滤多个字符串

NSPredicate filter by more than one string

nspredicate

swift