Why does my UIBarButtonItem have no title?
<p>I'd like to make a UIBarButtonItem with a round border.</p>

<pre><code>    let postButton = UIButton(type: .Custom)
    postButton.frame = CGRectMake(0, 0, 90, 30)
    postButton.layer.borderColor = logoColor(0).CGColor
    postButton.layer.borderWidth = CGFloat(3.0)
    postButton.layer.cornerRadius = 4.0
    postButton.clipsToBounds = true
    postButton.titleLabel?.font = UIFont(name: "Lato-Bold", size: 10.0)
    postButton.titleLabel?.textAlignment  = .Center
    postButton.titleLabel?.textColor = UIColor.blackColor()
    postButton.setTitle("post", forState: .Normal)
    postButtonBar = UIBarButtonItem(customView: postButton)

    navigationItem.rightBarButtonItems = [ postButtonBar ]
</code></pre>

<p>I tried this, but the result is a red-outline button with no title.</p>