Swift 中的 NSMethodSignature [英] NSMethodSignature in Swift

问题描述

在 ObjC 中，我有:

In ObjC I have:

NSMethodSignature *ms = [[object.target class] instanceMethodSignatureForSelector:object.selector];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:ms];

在 Swift 中出现错误:

In Swift I get error:

'NSObject' does not have a member named 'instanceMethodSignatureForSelector'

当我尝试这个时:

var ms:NSMethodSignature? = (object.target.dynamicType as NSObject).instanceMethodSignatureForSelector(object.success)

推荐答案

获取方法签名相当容易:

Getting a method signature is rather easy:

var target = NSObject()
var selector = Selector("success")

var signature: NSMethodSignature? = target.methodSignatureForSelector(selector)

但是，禁止使用NSInvocation:

重新考虑您的方法.

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