运行效果

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NSOpenPanel讲解

首先把2个按钮连线到swift文件中,2个按钮代码如下:
NSOpenPanel 创建对象以后通过设置属性canChooseDirectories和canChooseFiles实现打开文件或者文件夹
通过block beginSheetModal实现打开文件窗口.

代码例子

  var pathUrls = [URL]()//保存选择所有文件的路径数组
    //MARK: - 选择文件
    @IBAction func btnOpenFileClick(_ sender: Any) {
        let openPanel = NSOpenPanel()
        openPanel.prompt = "选择"
        openPanel.canChooseDirectories = false //不允许选择目录
        openPanel.canChooseFiles = true //选择文件
        openPanel.allowsMultipleSelection = true//允许多选
        openPanel.beginSheetModal(for: view.window!) {[unowned self]  result in
            if result != .OK { //result是点击的结果,如果点击确定result == .OK
                print("点击取消")
                return
            }
            //遍历多选的所有路径
            for url in openPanel.urls{
                print("路径是=",url.path)
            }
            pathUrls = openPanel.urls
        }
    }
    //MARK: - 选择目录
    @IBAction func btnOpenDirClick(_ sender: Any) {
        
        let openPanel = NSOpenPanel()
        openPanel.prompt = "选择"
        openPanel.canChooseDirectories = true //
        openPanel.allowsMultipleSelection = true
        openPanel.canChooseFiles = false
        openPanel.beginSheetModal(for: view.window!) { [unowned self]  result in
            if result != .OK {
                print("点击取消")
                return
            }
            //遍历多选的所有路径
            for url in openPanel.urls{
                print("路径是=",url.path)
            }
            pathUrls = openPanel.urls
        }
    }
    //MARK: - 用finder打开文件所在位置
    @IBAction func btnOpenPathClick(_ sender: Any) {
        print("pathUrls=",pathUrls)
        NSWorkspace.shared.activateFileViewerSelecting(pathUrls)
    }