NSOpenPanel as

Question

我環顧了其他答案，但似乎沒有任何幫助我的情況。

我有一個viewController類，它包含一個按鈕的IBAction。此按鈕應該打開一個NSOpenPanel自該一個的viewController片：

class ViewController: NSViewController { 
@IBAction func folderSelection(sender: AnyObject) { 
    var myFiledialog: NSOpenPanel = NSOpenPanel() 
    myFiledialog.prompt = "Select path" 
    myFiledialog.worksWhenModal = true 
    myFiledialog.allowsMultipleSelection = false 
    myFiledialog.canChooseDirectories = true 
    myFiledialog.canChooseFiles = false 
    myFiledialog.resolvesAliases = true 

    //myFiledialog.runModal() 

    myFiledialog.beginSheetModalForWindow(self.view.window!, completionHandler: nil) 


    var chosenpath = myFiledialog.URL 
    if (chosenpath!= nil) 
    { 
     var TheFile = chosenpath!.absoluteString! 
     println(TheFile) 
     //do something with TheFile 
    } 
    else 
    { 
     println("nothing chosen") 
    } 
} 
} 

的問題來自myFileDialog.beginSheetModalForWindow（..），其工作原理與上面的行，但是這不是一個片效果

Answer 1

您需要從您的窗口的面板上撥打beginSheetModalForWindow，並使用完成塊：

let myFiledialog = NSOpenPanel() 
myFiledialog.prompt = "Select path" 
myFiledialog.worksWhenModal = true 
myFiledialog.allowsMultipleSelection = false 
myFiledialog.canChooseDirectories = true 
myFiledialog.canChooseFiles = false 
myFiledialog.resolvesAliases = true 
myFiledialog.beginSheetModalForWindow(window, completionHandler: { num in 
    if num == NSModalResponseOK { 
     let path = myFiledialog.URL 
     print(path) 
    } else { 
     print("nothing chosen") 
    } 
})