选择器dataTask的含糊使用(带有:completionHandler :) [英] ambiguous use of selector dataTask(with: completionHandler:)

问题描述

我正在尝试获取 dataTask(with:completionHandler:)的selector 在URLSession中定义的方法，该方法使用如下的URLRequest对象，但是由于两个方法的参数名称略有不同(两种方法都被重载，方法会出错)(重载的方法-1.一个使用URLRequest对象作为参数，另一个使用URL) :

I'm trying to get a selector of the dataTask(with:completionHandler:) method defined in URLSession which uses URLRequest object like below, but getting error as there are two methods with slightly two different params names (overloaded methods - 1. one uses URLRequest object as param and another uses URL) :

let dataTaskSelector = #selector(URLSession.dataTask(with: completionHandler:))

我尝试了以下类似的方法(在

I have tried a different approach like below (mentioned in https://github.com/apple/swift-evolution/blob/master/proposals/0022-objc-selectors.md ) but it's also giving same error :

let mySelector = #selector((URLSession.dataTask(with: completionHandler:)) as (URLSession) -> (URLRequest, (Data?, URLResponse?, Error?) -> Swift.Void) -> URLSessionDataTask)

不幸的是，我正在使用最新的Xcode和swift3.到目前为止，我还没有找到具有类似示例的优秀文档.请帮忙.

I'm using latest Xcode and swift 3. I didn't find good documentation with similar example on this unfortunately so far. Please help.

提前谢谢！

推荐答案

您可以这样写selector.

let selector = #selector((URLSession.dataTask(with:completionHandler:)) as (URLSession) -> (URLRequest, @escaping (Data?, URLResponse?, Error?) -> Void) -> URLSessionDataTask)

该#selector 教程帮助我获得了解决方案.

This #selector tutorial help me to get the solution.

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