Swift 3：从.xib文件实例化的InputAccessoryView

Question

I'm having a problem with instantiating my InputAccessoryView from a .xib file, where the inputAccessoryView doesn't react on input:

private var conversationToolBar = ConversationToolBar()

override var inputAccessoryView: UIView? {
    return self.conversationToolBar
}

If I instantiate my inputAccessoryView from a method (createAccessoryView):

private var conversationToolBar = ConversationToolBar().createAccessoryView(width: UIScreen.main.bounds.width)

My class:

class ConversationToolBar: UIView {

@IBOutlet var view: UIView!

override init(frame: CGRect) {
    super.init(frame: frame)
    self.view = UINib(nibName: "ConversationToolBar", bundle: nil).instantiate(withOwner: self, options: nil).first as! UIView
    self.addSubview(self.view)
    self.view.frame = self.bounds
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    self.view = UINib(nibName: "ConversationToolBar", bundle: nil).instantiate(withOwner: self, options: nil).first as! UIView
    self.addSubview(self.view)
    self.view.frame = self.bounds
}

func createAccessoryView(width: CGFloat) -> UIView {
    let accessoryView = UIView(frame: CGRect(x: 0, y: 0, width: width, height: 100))
    accessoryView.backgroundColor = UIColor.blue

    let closeLabel = UITextField(frame: accessoryView.frame)
    closeLabel.font = UIFont.boldSystemFont(ofSize: 14)
    closeLabel.text = "Hello"
    closeLabel.textColor = UIColor.white
    closeLabel.textAlignment = .center
    accessoryView.addSubview(closeLabel)

    return accessoryView
}
}

The behaviour works as expected.

Can anyone help me? Thank you

Answer 1

I had same issue with showing inputAccessoryView as expected , and fixed it with calling this method to refresh input or accessory view :

closeLabel.reloadInputViews()

Updates the custom input and accessory views when the object is the first responder. You can use this method to refresh the custom input view or input accessory view associated with the current object when it is the first responder. The views are replaced immediately—that is, without animating them into place. If the current object is not the first responder, this method has no effect.