ios - '#selector' 的参数未引用中的初始化程序或方法

Question

我将我的项目从 Swift2.2 更新到 Swift3.0 但是 “Argument of '#selector' does not refer to an initializer or method” 收到问题。

这是代码:

for object in Students {
    let sectionNumber = collation.section(for: object.firstName!, collationStringSelector: #selector(NSObjectProtocol.self))
    sections[sections.count - 1 - sectionNumber].append(object)
}

Answer 1

class Person: NSObject {
    @objc var name: String

    init(name: String) {
        self.name = name
    }
}

let p = Person(name: "Alice")

let collation = UILocalizedIndexedCollation.current()
collation.section(for: p, collationStringSelector: #selector(getter: Person.name))

这也很好，因为 Selector 来自 Objective-C。我们需要 :NSObject 和 @objc。