带有WebKit的简单Swift Cocoa应用程序:无法上传图片 [英] Simple Swift Cocoa app with WebKit: Upload picture doesn't work

问题描述

我决定制作自己的FB聊天应用，该应用仅在 https://messenger.com >在尝试其他免费增值"应用之后.

I decided to make my own FB chat app that simply shows https://messenger.com on a WebView after trying other 'freemium' apps.

我的ViewController.swift只有几行代码，可将URL加载到网络视图中

My ViewController.swift has just a few lines of code that loads URL on the web view

import Cocoa
import WebKit

class ViewController: NSViewController {

    @IBOutlet weak var webView: WebView!
    override func viewDidLoad() {
        super.viewDidLoad()

        let url = NSURL(string: "https://messenger.com")
        let request = NSURLRequest(URL: url!);
        webView.mainFrame.loadRequest(request);
    }

    override var representedObject: AnyObject? {
        didSet {
        // do nothing
        }
    }
}

除了向info.plist添加NSAppTransportSecurity键以通过HTTPS连接取消阻止HTTP流量外，我还没有做任何其他设置.

Besides adding NSAppTransportSecurity key to info.plist to unblock HTTP traffic via HTTPS connection, I have not done any other settings.

请先看这张图片.

一切看起来都很好&除两件事外都可以正常工作.

Everything looks fine & working except two things.

1. 上传图片不起作用-我在图片中标记为1.

1. Uploading image does not work - I labeled as 1 in the picture.

• 通常(如在其他已发布的应用程序中或在Web浏览器中)，如果单击该图标，它将显示资源管理器以上传如下图所示的图片.

• normally (as in other released apps or from web browsers) if you click that icon, it shows an explorer to upload a picture like below.

我的应用程序完全忽略了用户对该图标的单击，因此我无法将任何图片上传到聊天中. 有趣的是，如果我将图片拖放到webview，它可以上传.

My app completely ignores user's click on that icon so I cannot upload any pictures to the chat. Interestingly, if I drag and drops the picture to the webview, it uploads fine.

共享的图片未显示-我在图片中标记为2.

Shared picture does not show up - I labeled as 2 in the picture.

同样，

• 通过其他浏览器或已发布的应用显示了我与参与者共享的图片，如下所示. (当然，我检查了图片)

• again, from other browsers or released apps, it shows the pictures that I shared with participants like below. (of course I censored the pictures)

我的应用尝试加载图片，但不显示它们.我可以看到它正在尝试加载，因为在加载时会看到循环进度指示器.

my app tries to load the pics, but does not display them. I can see it trying to load because I see circular progress indicator while loading.

为什么?

1. 我怀疑可能有一种方法可以监听WebView中触发的JavaScript并链接到文件资源管理器或类似的东西?

1. I suspect that there might be a way to listen to the JavaScript that's triggered within the WebView and link to a file explorer or something like that?

这我不知道.我已经登录Messenger(基本上是Facebook)，所以我认为session在这里不是问题.也许是一些jQuery加载问题?

This I have no idea. I'm logged into Messenger (basically Facebook), so I think session is not a problem here. Maybe some jQuery loading issue??

我应该怎么做才能解决这些问题?

What should I do to solve these issues?

推荐答案

1. 确实有一种委托方法可以打开一个名为runOpenPanelForFileButtonWithResultListener的新面板，

1. There is indeed a delegate method to open a new panel called runOpenPanelForFileButtonWithResultListener, documentation here.

在委托方法中，只需像这样创建一个新的NSOpenPanel:

In the delegate method, just create a new NSOpenPanel like this:

func webView(sender: WebView!, runOpenPanelForFileButtonWithResultListener resultListener: WebOpenPanelResultListener!, allowMultipleFiles: Bool) {
    let openDialog = NSOpenPanel()
    if (openDialog.runModal() == NSOKButton) {
        let fileName: String = (openDialog.URL?.path)!
        resultListener.chooseFilename(fileName) // Use chooseFilenames for multiple files
    }
}

1. 我刚刚尝试从Messagers App创建一个WebView，并且图像加载良好.
   您应该尝试通过界面构建​​器(或通过代码)启用WebView选项，例如自动加载图像"或启用动画图像".

1. I just tried to create a WebView from Messagers App and images are loading well.
   You should try to enable WebView options like "Autoload Images" or "Enable Animated Images" from interface builder (or by code).

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