//这里，有时候会在keyboardWillChangeFrame后面执行，通知方法里面要做非空判断。
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
isEditTextField = textField
return true
}
一般不需要滚动的页面
//键盘将要改的通知方法
@objc func keyboardWillChangeFrame(notifi: Notification) {
if let endFrame = notifi.userInfo!["UIKeyboardFrameEndUserInfoKey"] as? NSValue {
guard isEditTextField != nil else{
return
}
let rect = endFrame.cgRectValue
let value = (self.view.frame.size.height-(isEditTextField?.frame.origin.y)!-(isEditTextField?.frame.size.height)!-30)-rect.size.height//
UIView.animate(withDuration: TimeInterval(0.25), animations: {
//键盘覆盖了输入框
if value < 0 {
//已经上移动一次了，就不用移动了
if self.view.frame.origin.y == 0{
self.view.frame.origin.y += value
}
}
if rect.origin.y == UIScreen.main.bounds.height { //键盘将要收起
self.view.frame.origin.y = 0
}
})
}
}
UISCrollView页面的键盘出入
//键盘将要改的通知方法
@objc func onKeyboardWillShowFrame(notification: NSNotification) {
let dict = NSDictionary(dictionary: notification.userInfo!)
let keyboardFrame = (dict[UIKeyboardFrameEndUserInfoKey]! as AnyObject).cgRectValue
let duration = dict[UIKeyboardAnimationDurationUserInfoKey] as! Double
//点击下一步的跳转
if keyboardShown == true {
UIView.animate(withDuration: duration, animations: { () -> Void in
//键盘挡住内容，需要加大contentView的高度
self.scrollView.frame.size.height = self.view.frame.size.height-(keyboardFrame?.size.height)!
print(self.scrollView.contentSize.height)
//已经改变一次就不再改变
if self.needChangeContent == true {}else{
self.scrollView.contentSize.height
+= (keyboardFrame?.size.height)!
print(self.scrollView.contentSize.height)
self.scrollView.scrollRectToVisible((self.isEditTextField?.frame)!, animated: true)
self.needChangeContent = true
}
//键盘没有挡住内容
})
//点击一个输入框的跳转
}else{
UIView.animate(withDuration: duration, animations: { () -> Void in
self.scrollView.frame.size.height = self.view.frame.size.height-(keyboardFrame?.size.height)!
//+30 是为了使textFiled不要紧贴输入法
self.scrollView.scrollRectToVisible((self.isEditTextField?.frame)!, animated: true)
})
self.needChangeContent = false
}
keyboardShown = true
}
@objc func onKeyboardWillHideFrame(notification: NSNotification) {
let dict = NSDictionary(dictionary: notification.userInfo!)
let duration = dict[UIKeyboardAnimationDurationUserInfoKey] as! Double
let keyboardFrame = (dict[UIKeyboardFrameEndUserInfoKey]! as AnyObject).cgRectValue
UIView.animate(withDuration: duration, animations: { () -> Void in
//让scrollView还原
self.scrollView.frame.size.height = self.view.frame.size.height
//修改了contentView的高度，需要还原
if self.needChangeContent == true{
self.scrollView.contentSize.height -= (keyboardFrame?.size.height)!
}
})
keyboardShown = false
}
看起来比较复杂，还需要再精简一些的。