[英]Get the height of keyboard doesn't work on IOS 11 beta
I have the following code which worked on IOS 10, but now it doesn't work anymore when running on IOS 11 beta. 我有以下代码可用于IOS 10,但现在它在IOS 11 beta上运行时不再起作用。
if let userInfo = notification.userInfo {
if let keyboardSize = (userInfo[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
print(keyboardSize)
}
}
This is what I get when I print the size: 这是我打印尺寸时得到的:
(0.0, 0.0, 0.0, 0.0)
(0.0, 736.0, 414.0, 0.0)
Anyone knows why this has stopped working ? 谁知道为什么这已停止工作? Or if I have any other alternatives to get the keyboard size ?
或者,如果我有其他选择来获得键盘尺寸?
Use UIKeyboardFrameEndUserInfoKey
instead of UIKeyboardFrameBeginUserInfoKey
使用
UIKeyboardFrameEndUserInfoKey
代替UIKeyboardFrameBeginUserInfoKey
So changing your code to the following will fix your issue: 因此,将代码更改为以下内容将解决您的问题:
if let userInfo = notification.userInfo {
if let keyboardSize = (userInfo[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue {
print(keyboardSize)
}
}
I have the same issue. 我有同样的问题。 The answer of Doug Amos is right.
Doug Amos的答案是对的。 I just want to make it clearer.
我只是想让它更清楚。 Here is my code:
这是我的代码:
@objc func keyboardWillShow(notification:NSNotification){
var userInfo = notification.userInfo!
var keyboardFrame:CGRect = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
if keyboardFrame.size.height <= 0 { // to fix bug on iOS 11
keyboardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
}
keyboardFrame = self.view.convert(keyboardFrame, from: nil)
}
I used this code in my app with Swif 3+ 我在Swif 3+的应用程序中使用了这段代码
var userInfo = notification.userInfo
if let keyboardFrame = (userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue{
print(keyboardFrame.height)
if keyboardFrame.size.height <= 0 { // To fix bug on iOS 11
if let newKeyboardFrame = (userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue{
print(newKeyboardFrame.height)
}
}
}
view.layoutIfNeeded()
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