问题描述
您好,我正在开发一个应用程序,我将多个图像上传到服务器并加载到桌面上。我需要做的是我需要为成功加载到服务器的图像显示一个蓝色勾号,并为正在上传或未上传的图像显示一个加载器。下面是代码
Alamofire.upload(multipartFormData: { multipartFormData in for imageData in imagesData {
multipartFormData.append(imageData,withName: "\(imageParameterName)[]",fileName: "\(Date().timeIntervalSince1970).jpeg",mimeType: "image/jpeg")
}
for (key,value) in parameters {
multipartFormData.append(value.data(using: String.Encoding.utf8)!,withName: key)
}
},to: urlString,encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload,_,_):
upload.responseJSON { response in
}
case .failure(let error):
print(error)
}
})
欢迎对流程或流程提出任何建议。
解决方法
您可以使用 DispatchGroup()
let syncGroup = DispatchGroup()
for i in results {
self.syncGroup.enter()
**/* For Like Example api call and success in blue tick image update */**
let image = UIImage(data: i.imageData! as Data)
self.viewModel.postUploadImage(imgUpload: image!,description: i.descriptionn,location: i.location,allowPublish: i.allow_publish,cropID: i.crop_id,diseasesID: i.disease_id){
let count = self.syncGroup.debugDescription.components(separatedBy: ",").filter({$0.contains("count")}).first!.components(separatedBy: CharacterSet.decimalDigits.inverted).filter({Int($0) != nil})
if count.first != "0"{
self.syncGroup.leave()
print("Leave")
// Blue tick image set
}
}
}
}
self.syncGroup.notify(queue: DispatchQueue.main,execute: {
print("Finished all requests.")
}