[英]Keep a view always on top (Don't scroll with keyboard) in IQKeyboardManager
在使用键盘键入后,我正在使用IQKeyboardManager
将文本字段保持为 go。
即使单击文本字段,我也不想滚动到特定视图。 下面是设计的截图。 我希望“标题”保持在顶部。
从他们的文档中, 有一种方法可以使导航栏保持在顶部。
为您的 ViewController 禁用 IQKeyboardManager。
为此,
IQKeyboardManager.sharedManager().disableInViewControllerClass(ViewController.self)
并在该 viewController 中编写以下代码。 它将根据键盘高度向上移动您的视图
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.origin.y == 0 {
self.view.frame.origin.y -= keyboardSize.height
}
}
}
func keyboardWillHide(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.origin.y != 0 {
self.view.frame.origin.y += keyboardSize.height
}
}
}
现在你想让你的“ HEADER ”视图保持在顶部,然后,
这样做:
**
YourViewController.view -> [headerView][contentView]
**
将文本字段放入 [contentView] 并在上面的代码中更改 [contentView].y 而不是 Self.view。
禁用IQKeyboardManager
您viewController
:
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
IQKeyboardManager.sharedManager().enable = false
NotificationCenter.default.addObserver(self, selector: #selector(Login.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(Login.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
手柄键盘:
func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.origin.y == 0{
self.table_view.frame.origin.y -= keyboardSize.height
}
}
}
func keyboardWillHide(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
if self.view.frame.origin.y != 0{
self.table_view.frame.origin.y += keyboardSize.height
}
}
}
移除观察者:
override func viewWillDisappear(animated: Bool) {
IQKeyboardManager.sharedManager().enable = true
NSNotificationCenter.defaultCenter().removeObserver(self)
}
@Wolverine 和@Bhavin Ramani 的回答很棒:让您的自定义 header保持在顶部的最佳方法是手动处理您的键盘(根据 IQKeyboardSwift 作者的评论)。 如果您使用 iOS 默认导航栏,它似乎是由图书馆为您处理的。
在这里我只想分享一些关于这个主题的更新,供我将来参考,因为答案有点旧,一些 Swift 语法已经改变。 下面代码写在Xcode 13.2,针对iOS 13+。
首先,你想通过做禁用 KQKeyboardManager
IQKeyboardManager.shared.enable = false
请注意,此行仅禁用向上移动文本字段功能,其他 IQKeyboard 功能(例如在外部触摸时退出、自动工具栏等)不会被此行禁用,这通常是您想要的。
然后,在视图控制器的viewDidLoad
中注册键盘事件观察器,在deinit
中删除观察器。
override func viewDidLoad() {
super.viewDidLoad()
IQKeyboardManager.shared.enable = false
NotificationCenter.default.addObserver(self,
selector: #selector(keyboardWillShow),
name: UIResponder.keyboardWillShowNotification,
object: nil)
NotificationCenter.default.addObserver(self,
selector: #selector(keyboardWillHide),
name: UIResponder.keyboardWillHideNotification,
object: nil)
}
deinit {
IQKeyboardManager.shared.enable = true
NotificationCenter.default.removeObserver(self)
}
接下来,为键盘显示/隐藏添加视图向上/向下移动方法。
@objc private func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? CGRect {
print("keyboardSize.height", keyboardSize.height)
// using the right key here is important, because
// keyboardFrameEndUserInfoKey is an user info key
// to retrieve the keyboard’s frame at the END of its animation.
// here you move up the views you need to move up
// if you use auto layout, update the corresponding constraints
// or you update the views' frame.origin.y
// you may want to do the updates within a 0.25s animation
}
}
@objc private func keyboardWillHide(notification: NSNotification) {
if let keyboardSize = notification.userInfo?[UIResponder.keyboardFrameBeginUserInfoKey] as? CGRect {
// reset views to their original position on keyboard dismiss
}
}
您可能还想启用/禁用自动工具栏,因为它可能会使您的键盘高度不稳定。
// in viewDidLoad set to false, in deinit set back to true (if you need it)
IQKeyboardManager.shared.enableAutoToolbar = false
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