从swift的Facebook SDK GraphRequest获取进展 [英] Get progress from Facebook SDK GraphRequest with swift

问题描述

  FBSDKGraphRequest（graphPath：me / photos，参数：params作为[NSObject：AnyObject]，HTTPMethod：POST）。startWithCompletionHandler（{（connection，result，error） - > Void in 
 
 if（error！= nil）{
 print （失败）
} 
 else {
 print（success）
} 
 
}）
  

到目前为止，工作正常，但上传可能需要一段时间，我想通知用户当前的进度。有什么办法可以得到当前的进展吗？如我在SDK文档中可以看到的，有一个 FBSDKGraphRequestConnection ，它提供了一个 FBSDKGraphRequestConnectionDelegate ，其进度在 requestConnection：didSendBodyData：totalBytesWritten：totalBytesExpectedToWrite：但我无法理解，如何在我的小代码中实现这些东西。有人可以帮助吗？

解决方案

我有其他人也有同样的问题... Google没有找到任何以swift写的东西。这是我的工作解决方案：

1）从 NSObject 和 FBSDKGraphRequestConnectionDelegate写下你的上传过程，如下所示：

 code> let uploadRequest = FBSDKGraphRequest（graphPath：me / photos，参数：params as [NSObject：AnyObject]，HTTPMethod：POST）
 let connection = FBSDKGraphRequestConnection（）
 connection。 delegate = self 
 connection.addRequest（uploadRequest，completionHandler：{
（connection，result，error） - > Void in 
 
 if（error！= nil）{
 //错误处理
} 
 else {
 //成功处理
} 
}）
 connection.start（）
  

3）在您的课堂上执行代理：

  func requestConnection（connection：FBSDKGraphRequestConnection，didSendBodyData bytesWritten：NSInteger，total BytesWritten：NSInteger，totalBytesExpectedToWrite：NSInteger）{
 print（upload percent reached：+ String（Double（totalBytesWritten）/ Double（totalBytesExpectedToWrite）））
 
 //处理您的UI，显示当前状态
} 
  

I upload an image with this pice of code:

    FBSDKGraphRequest(graphPath: "me/photos", parameters: params as [NSObject : AnyObject], HTTPMethod: "POST").startWithCompletionHandler({ (connection, result, error) -> Void in

        if (error != nil) {
            print ("failed")
        }
        else {
            print ("success")
        }

    })

It works fine so far, but the upload can take a while and I want to inform the user about the current progress. Is there any way to get the current progress? As I can see in the SDK docs, there is a FBSDKGraphRequestConnection that provides a FBSDKGraphRequestConnectionDelegate with progress stuff in requestConnection:didSendBodyData:totalBytesWritten:totalBytesExpectedToWrite:but I´m unable understand, how to implement this stuff in my little pice of code. Can anybody help?

解决方案

I someone else has the same problem ... Google does´t find anything written in swift. Here´s my working solution:

1) Derive your class from NSObject and FBSDKGraphRequestConnectionDelegate

2) Write your upload process like this:

    let uploadRequest = FBSDKGraphRequest(graphPath: "me/photos", parameters: params as [NSObject : AnyObject], HTTPMethod: "POST")
    let connection = FBSDKGraphRequestConnection()
    connection.delegate = self
    connection.addRequest(uploadRequest, completionHandler: {
        (connection, result, error) -> Void in

        if (error != nil) {
            // error handling
        }
        else {
            // success handling
        }
    })
    connection.start()

3) Implement the delegate in your class like this:

func requestConnection(connection:FBSDKGraphRequestConnection, didSendBodyData bytesWritten:NSInteger, totalBytesWritten:NSInteger, totalBytesExpectedToWrite:NSInteger) {
    print("upload percent reached: " + String(Double(totalBytesWritten) / Double(totalBytesExpectedToWrite)))

    // handle your UI here to show the current status
}

这篇关于从swift的Facebook SDK GraphRequest获取进展的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！