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大家好我最近已將我的iOS應用程序遷移到Swift 3.1(Xcode 8.3.3)。我自己找出了大部分問題,但最後一個錯誤仍然困擾着我。那麼,削減長話短說,我用Alamofire庫進行調用Web服務和一些方法用於調度同步如下:Swift 3.1 Migration Dispatch.main.async模糊引用成員異步(執行:)'
class func createVideoActivity(_ type: Int, permission: Int, message: String, video: URL, progressview:UIProgressView , completion: @escaping (_ type: ResponseType , _ response : Int, _ message: String) -> Void) {
let user_id = CFunctions.getSession("id")
var serviceURL = baseURL + "&task=createActivity&user_id=\(user_id)&type=\(type)&permission=\(permission)"
serviceURL = serviceURL.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)!
let url = URL(string: serviceURL)
let authHeader = ["":""]
let mimetype = "video/mov"
var movieData: Data?
do {
movieData = try Data(contentsOf: URL(fileURLWithPath: (video.relativePath)), options: NSData.ReadingOptions.alwaysMapped)
} catch _ {
movieData = nil
return
}
let filename = "upload.mov"
upload(
multipartFormData:{ multipartFormData in
multipartFormData.append(movieData!, withName: "filedata",fileName: filename,mimeType: mimetype)
multipartFormData.append(message.data(using: String.Encoding.utf8)!, withName: "message")
},
to: url!,
headers: authHeader,
encodingCompletion:
{
encodingResult in
switch encodingResult {
case .success(let uploads, _, _):
.uploadProgress { bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
DispatchQueue.main.async {
let percent = (Float(totalBytesWritten)/Float(totalBytesExpectedToWrite))
print(percent)
progressview.setProgress(percent, animated: true)
}
}
uploads.validate()
uploads.responseJSON { serverResponse in
switch serverResponse.result {
case .success(let JSON):
debugPrint(JSON)
if (JSON as AnyObject).value(forKey: "status") as! Int == 1 {
completion(ResponseType.kresponseTypeSuccess,(JSON as AnyObject).value(forKey: "status") as! Int, (JSON as AnyObject).value(forKey: "response") as? String ?? "")
} else {
completion(ResponseType.kresponseTypeSuccess,(JSON as AnyObject).value(forKey: "status") as! Int, (JSON as AnyObject).value(forKey: "response") as? String ?? "")
}
case .failure(let error):
let dataString = String(data: serverResponse.data!, encoding: String.Encoding.utf8)
print("createVideoActivity Request failed with error: \(String(describing: dataString))")
completion(ResponseType.kResponseTypeFail, error as! Int, "Service failed")
}
}
case .failure(let encodingError):
print(encodingError)
}
}
) // upload - end
}
我越來越「曖昧參考成員‘異步(執行:)’」 Dispatch.main.sync行錯誤。你能找出發生了什麼事嗎?
你試試這個:DispatchQueue.main.async(執行:{() - >在你的代碼無效}) – u84six
是的u84six已經做到了這一點,沒有工作。雖然問題已解決,我立即在下面發佈答案。 – Ali