解决键盘弹起网页自动上移问题，实现viewForZooming代理
class ViewController: UIScrollViewDelegate {
}
self.scrollview.delegate = self;
// 如果return nil会出现键盘背景透明问题
extension ViewController {
func viewForZooming(in scrollView: UIScrollView) -> UIView? {
return UIView()
}
}
监听键盘事件
NotificationCenter.default.rac_addObserver(forName: UIResponder.keyboardWillShowNotification.rawValue, object: nil).subscribeNext { [weak self] x in
self?.keyboardWillChangeFrame(x! as Notification)
}
NotificationCenter.default.rac_addObserver(forName: UIResponder.keyboardWillHideNotification.rawValue, object: nil).subscribeNext { [weak self] x in
self?.keyboardDidHide(x! as Notification)
}
extension ViewController {
/// 键盘弹出
@objc func keyboardWillChangeFrame(_ notification: Notification) {
let keyboardFrame = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
}
/// 键盘收回
@objc func keyboardDidHide(_ notification: Notification) {
}
