ios 监控键盘状态
Posted 荣超
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增加键盘显示和隐藏事件监听
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
@objc func keyboardWillShow(notification:Notification){
let userinfo:Dictionary = notification.userInfo!
let frame = (userinfo[UIResponder.keyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
UIView.animate(withDuration: 0.4, animations: {
self.view.frame.origin.y = 0 - frame.height
})
}
@objc func keyboardWillHide(notification:Notification){
UIView.animate(withDuration: 0.4, animations: {
self.view.frame.origin.y = 0
})
}
删除事件监听
NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillHideNotification, object: nil)
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