无法将类型'NSMutableURLRequest'(0x11beb7040)的值强制转换为'Alamofire.URLRequestConvertible'(0x11beb9040) [英] Could not cast value of type 'NSMutableURLRequest' (0x11beb7040) to 'Alamofire.URLRequestConvertible' (0x11beb9040)
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问题描述
在构建代码时,然后在 Alamofire.request(请求为!URLRequestConvertible).responseJSON()
上崩溃。请建议如何解决此崩溃
when build my code then crash on Alamofire.request(request as! URLRequestConvertible).responseJSON()
. pls suggest how to fix this crash
let url = NSURL(string: "https://jsonplaceholder.typicode.com/users")
let request = NSMutableURLRequest(url:url! as URL)
request.httpMethod = "GET"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
Alamofire.request(request as! URLRequestConvertible).responseJSON(){ response in
switch response.result
{
case .success(let data):
print(" i got my Data Yup",data)
case .failure(let error):
print(error)
}
}
推荐答案
在Swift 3中,您要做的就是将NSMutableURLRequest更改为URLRequest即可。无需投放。
另外,设置var使其可以快速可变。 :)谢谢马库斯发表评论。
In Swift 3, all you have to do is to change NSMutableURLRequest to URLRequest and it will work. No need to cast. Also, set var so it can be swift mutable. :) Thanks, Markus for comment.
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