在iOS中旋转时，inputAccessoryView的UIToolbar变黑

这是我的代码：

override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. let keyBoardToolBar = UIToolbar(frame: CGRectMake(0, 0, self.view.frame.size.width, 44)) keyBoardToolBar.barStyle = .Default let flexSpaceKeyboardBarButtonItem = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil) let doneKeyboardBarButtonItem = UIBarButtonItem(title: "Done", style: .Done, target: self, action: nil) let wordKeyboardBarButtonItem = UIBarButtonItem(title: "Button 1", style: .Plain, target: self, action: nil) var barItems: [UIBarButtonItem] = [] barItems.append(wordKeyboardBarButtonItem) barItems.append(flexSpaceKeyboardBarButtonItem) barItems.append(doneKeyboardBarButtonItem) keyBoardToolBar.setItems(barItems, animated: true) self.myTV.inputAccessoryView = keyBoardToolBar } 

当我转动设备时，UIToolBar变黑了（点击再次看到这个GIF）

那么无论如何要修复它？ 谢谢！

顺便说一句：在模拟器中，我看不到UIToolBar变黑了。

Answer 1

通过添加修复:(仍然不清楚导致它的原因）

 keyBoardToolBar.isTranslucent = false keyBoardToolBar.barTintColor = UIColor(colorLiteralRed: (247/255), green: (247/255), blue: (247/255), alpha: 1) 

（ UIColor(colorLiteralRed: (247/255), green: (247/255), blue: (247/255), alpha: 1)是UIToolBar的默认背景颜色，从这里开始 ）