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nil与预期的参数类型“uiimage”不兼容

swift ios

Angel F Syrus patel jigar · 技术社区 · 8 年前

这是我的密码,

self.plistModification(urlStr: urlString, uploadedImage:nil )

我可以知道如何将图像值指定为零吗?

下面给出了我的plistmodification函数,每次调用该函数时,uploadeImage值(uiimage)都会发生更改。

   func plistModification(urlStr : String , uploadedImage : UIImage)
{
    self.activityView.isHidden = false
    SBNetworkManager().getDetails(sortType: "", URLString: urlStr, param: "") { (dictList, error) in


            self.imageUpload(imageData: uploadedImage)

            DispatchQueue.main.async {
                self.activityView.isHidden = true
            }
            if self.flag == 1
            {
                GIDSignIn.sharedInstance().signOut()
            }

        }
        else
        {
            DispatchQueue.main.async {
                self.activityView.isHidden = true
                if self.flag == 1
                {
                    let alert = UIAlertController(title: "Alert", message: dictList!["status_message"]as? String, preferredStyle: .alert)
                    let alertAction = UIAlertAction(title: "Ok", style: .default, handler: { (action) in
                        GIDSignIn.sharedInstance().signOut()
                    })
                    alert.addAction(alertAction)
                    self.present(alert, animated: true, completion: nil)
                }
            }

        }

2 回复 | 直到 8 年前

Sazid Iqabal 8 年前

  self.plistModification(urlStr: urlString, uploadedImage:UIImage() )

或者可以将方法参数设置为可选参数,如

   func plistModification(urlStr: String, uploadedImage:UIImage?)

Pravin Tate 8 年前

    self.plistModification(urlStr: urlString)
//OR

    self.plistModification(urlStr: urlString, uploadedImage:imageData)
    //it may be image or nil


    func plistModification(urlStr: string, uploadedImage:UIImage? = nil){

    }