创建后，在UITextView的inputAccessoryView中更改UIBarButtonItem的按钮标题？

Question

我在inputAccessoryView中为UITextView创建了viewDidLoad：

var keyBoardToolBar：UIToolbar = UIToolbar（frame：CGRectMake（0,0，self.view.frame.size.width，50））     keyBoardToolBar.barStyle = UIBarStyle.Default

var firstButton: UIBarButtonItem = UIBarButtonItem(title: "firstButton", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("firstButtonAction"))

var flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)

var done: UIBarButtonItem = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Done, target: self, action: Selector("doneButtonAction"))

var items = NSMutableArray()

items.addObject(firstButton)
items.addObject(flexSpace)
items.addObject(done)

keyBoardToolBar.items = items as [AnyObject]
keyBoardToolBar.sizeToFit()

self.tv.inputAccessoryView = keyBoardToolBar

我想更改其他功能中的firstButton按钮文字（viewDidLoad之后）。那我该怎么办？谢谢！

Answer 1

var firstButton: UIBarButtonItem就在viewDidLoad之前的课堂内，并更改其标题使用firstButton.title。 ：）