Question

作为MacRuby初学者，我正在使用此tutorial，并希望添加一个下拉表，以便在用户尝试从应用中删除条目时发出警告。

遵循代码here，其中Obj-C是

- (IBAction)deleteRecord:(id)sender 
{
  NSString *title = @"Warning!";
  NSString *defaultButton = @"Delete";
  NSString *alternateButton = @"Don't Delete";
  NSString *otherButton = nil;
  NSString *message = @"Are you sure you want to delete the selected record(s)?";

  if ( [tableView numberOfSelectedRows] == 0 )
    return;

  NSBeep();
  NSBeginAlertSheet(title, defaultButton, alternateButton, otherButton, mainWindow, self, @selector(sheetDidEnd:returnCode:contextInfo:), nil, nil, message);
}

我在MacRuby：

def removeFriend(sender)
  return if @friendsTableView.numberOfSelectedRows == 0
  title = 'Warning!'
  defaultButton = 'Delete'
  alternateButton = 'Don\'t Delete'
  otherButton = nil
  s = @friendsTableView.numberOfSelectedRows > 1 ? 's' : ''
  message = "Are you sure you want to delete the selected record#{s}?"
  NSBeginAlertSheet(title, defaultButton, alternateButton, otherButton, @mainWindow, self, :'alertDidEnd:returnCode:contextInfo:', nil, nil, message)
end

和alertDidEnd:returnCode:contextInfo：

def alertDidEnd(sheet, returnCode:rCode, contextInfo:cInfo)
  <array handling code>
end

当此项运行时，我会在点击链接到removeFriend的按钮时获得一个下拉列表，但如果我点击“删除”，我的应用会崩溃并出现以下错误：

unknown: [BUG] unknown Objective-C immediate: 0x1 (nil)

MacRuby 0.12 (ruby 1.9.2) [universal-darwin10.0, x86_64]

(lldb)

我是否在实施didAlertEnd方法时出错了，或者这实际上是一个错误？

Answer 1

显然是一个MacRuby错误：http://www.macruby.org/trac/ticket/1368

MacRuby NSBeginAlertSheet调用给出未知：[BUG]未知Objective-C立即：0x1（无）

1 个答案: