ios - URLSession 完成处理程序应用程序崩溃

Question

我正在对 URLSession 使用方法调配，下面是我的调配方法。我不确定为什么应用程序在执行 @escaping 的完成处理程序时在目标应用程序中崩溃。请帮助我。

@objc func mytestTaskWithRequest(request: URLRequest,completionHandler: @escaping (Data?, URLResponse?, Error?) -> Void ) -> URLSessionDataTask {
    let completionHandler: (Data?, URLResponse?, Error?) -> Void = {(data, response, error) in
      if error == nil {
        DispatchQueue.main.async {
          self.captureNetworkInfo(senderRequest: request, senderResponse: response!)
        }
      }
      completionHandler(data,response,nil)
    }
    return mytestTaskWithRequest(request: request,completionHandler: completionHandler)
  }

Answer 1

您的响应是空安全的，并且您使用!强制它，如果响应返回空，那么您的应用程序将崩溃试试这个:

@objc func mytestTaskWithRequest(request: URLRequest,completionHandler: @escaping (Data?, URLResponse?, Error?) -> Void ) -> URLSessionDataTask {
        let completionHandler: (Data?, URLResponse?, Error?) -> Void = {(data, response, error) in
          if error == nil {
            DispatchQueue.main.async {
              if let tempResponse = response {
               self.captureNetworkInfo(senderRequest: request, senderResponse: tempResponse)
              }
            }
          }
          completionHandler(data,response,nil)
        }
        return mytestTaskWithRequest(request: request,completionHandler: completionHandler)
      }