使NSOpenPanel打开自定义目录

Question

有什么方法可以将URL传递给我的系统上的文件夹，该文件夹应该是NSOpenPanel打开的默认窗口？ 谢谢！

更新：

NSOpenPanel *ads_open = [[NSOpenPanel openPanel] retain];
[ads_open setDirectoryURL:"file://localhost/System/Library/CoreServices/prndrv"];

我正在使用上面的代码，这是我希望默认打开的目录。 但是，我得到的默认窗口仍然是我访问过的最后一个窗口，而不是我指定的窗口。 如何访问URL目录？

Answer 1

NSOpenPanel *ads_open = [NSOpenPanel openPanel];
[ads_open setDirectoryURL:[NSURL URLWithString:@"file://localhost/System/Library/CoreServices/prndrv"]];

Answer 2

注意使用[NSURL fileURLWithPath:someStringPath]否则它不是有效的文件URL：

   NSOpenPanel *panel = [NSOpenPanel openPanel];

// changes promt to Select
[panel setPrompt:@"Select"];

// Enable the selection of files in the dialog.
[panel setCanChooseFiles:NO];

// Enable the selection of directories in the dialog.
[panel setCanChooseDirectories:YES];

//allows multi select
[panel setAllowsMultipleSelection:NO];
if(exists){
    [panel setDirectoryURL:[NSURL fileURLWithPath:lastPath]];
}

[panel beginSheetModalForWindow:self.window
              completionHandler:^(NSInteger returnCode) {
                  if (returnCode == NSOKButton)
                  {
                      .....

              }}];

Answer 3

工作范例：

NSOpenPanel *panel = [NSOpenPanel openPanel];
[panel setDirectoryURL:[NSURL URLWithString:@"file://localhost/System/Library/CoreServices/"]];

[panel beginSheetModalForWindow:self.window
              completionHandler:^(NSInteger returnCode) {
                  if (returnCode == NSOKButton)
                  {
                      NSURL *theURL = [[panel URLs] objectAtIndex:0];
                  }
              }];

Answer 4

对于Swift 3：

let panel = NSOpenPanel()
panel.directoryURL = URL(fileURLWithPath: "smb://servername/path", isDirectory: true)