要恢复到原始视图状态，请添加：

-(void)textFieldDidEndEditing:(UITextField *)sender

{
    //move the main view, so that the keyboard does not hide it.
    if  (self.view.frame.origin.y < 0)
    {
        [self setViewMovedUp:NO];
    }
}

Swift 3.0版本的苹果键盘管理代码如下：以下代码中使用的FloatingTF是iOS中基于材质设计的文本字段。

import UIKit
class SignupViewController: UIViewController, UITextFieldDelegate {

    //MARK: - IBOutlet:
@IBOutlet weak var emailTF: FloatingTF!
@IBOutlet weak var passwordTF: FloatingTF!
@IBOutlet weak var dobTF: FloatingTF!

@IBOutlet weak var scrollView: UIScrollView!

//MARK: - Variable:
var activeTextField: UITextField!

//MARK: - ViewController Lifecycle:
override func viewDidLoad() {
    super.viewDidLoad()        
    emailTF.delegate = self
    passwordTF.delegate = self
    dobTF.delegate = self 
}
override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    registerKeyboardNotifications()
}
override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)

   deRegisterKeyboardNotifications()
}

//MARK: - Keyboard notification observer Methods
fileprivate func registerKeyboardNotifications() {
    NotificationCenter.default.addObserver(self, selector: #selector(SignupViewController.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(SignupViewController.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
fileprivate func deRegisterKeyboardNotifications() {
    NotificationCenter.default.removeObserver(self, name: .UIKeyboardWillShow, object: self.view.window)
    NotificationCenter.default.removeObserver(self, name: .UIKeyboardDidHide, object: self.view.window)
}
func keyboardWillShow(notification: NSNotification) {

    let info: NSDictionary = notification.userInfo! as NSDictionary
    let value: NSValue = info.value(forKey: UIKeyboardFrameBeginUserInfoKey) as! NSValue
    let keyboardSize: CGSize = value.cgRectValue.size
    let contentInsets: UIEdgeInsets = UIEdgeInsetsMake(0.0, 0.0, keyboardSize.height, 0.0)
    scrollView.contentInset = contentInsets
    scrollView.scrollIndicatorInsets = contentInsets

    // If active text field is hidden by keyboard, scroll it so it's visible
    // Your app might not need or want this behavior.
    var aRect: CGRect = self.view.frame
    aRect.size.height -= keyboardSize.height
    let activeTextFieldRect: CGRect? = activeTextField?.frame
    let activeTextFieldOrigin: CGPoint? = activeTextFieldRect?.origin
    if (!aRect.contains(activeTextFieldOrigin!)) {
        scrollView.scrollRectToVisible(activeTextFieldRect!, animated:true)
    }    }

func keyboardWillHide(notification: NSNotification) {
    let contentInsets: UIEdgeInsets = .zero
    scrollView.contentInset = contentInsets
    scrollView.scrollIndicatorInsets = contentInsets
}

//MARK: - UITextField Delegate Methods
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    if textField == emailTF {
        passwordTF.becomeFirstResponder()
    }
    else if textField == passwordTF {
        dobTF.becomeFirstResponder()
    }
    else {
        self.view.endEditing(true)
    }
    return true
}

func textFieldDidBeginEditing(_ textField: UITextField) {
    activeTextField = textField
    scrollView.isScrollEnabled = true
}

func textFieldDidEndEditing(_ textField: UITextField) {
    activeTextField = nil
    scrollView.isScrollEnabled = false
}
}

根据文档，从iOS 3.0开始，当有文本字段的在线编辑时，UITableViewController类会自动调整其表视图的大小并重新定位。我认为将文本字段放在UITableViewCell中是不够的，正如一些人所指出的那样。

从文档中：

表视图控制器支持表视图行的内联编辑；例如，如果行在编辑模式下嵌入了文本字段滚动虚拟键盘上方正在编辑的行显示。

在textFieldDidBginEditing和textFieldDidEndEditing中调用函数[self-animateTextField:textField up:YES]，如下所示：

-(void)textFieldDidBeginEditing:(UITextField *)textField 
{ 
    [self animateTextField:textField up:YES]; 
}

- (void)textFieldDidEndEditing:(UITextField *)textField
{
    [self animateTextField:textField up:NO];
}

-(void)animateTextField:(UITextField*)textField up:(BOOL)up
{
    const int movementDistance = -130; // tweak as needed
    const float movementDuration = 0.3f; // tweak as needed

    int movement = (up ? movementDistance : -movementDistance); 

    [UIView beginAnimations: @"animateTextField" context: nil];
    [UIView setAnimationBeginsFromCurrentState: YES];
    [UIView setAnimationDuration: movementDuration];
    self.view.frame = CGRectOffset(self.view.frame, 0, movement);
    [UIView commitAnimations];
}

我希望这段代码对你有所帮助。

雨燕5

func animateTextField(textField: UITextField, up: Bool) {
    
    let movementDistance: CGFloat = -130
    let movementDuration: Double = 0.3
    
    var movement:CGFloat = 0
    if up {
        movement = movementDistance
    } else {
        movement = -movementDistance
    }
    
    UIView.animate(withDuration: movementDuration, delay: 0, options: [.beginFromCurrentState]) {
        self.view.frame = self.view.frame.offsetBy(dx: 0, dy: movement)
    }
}

func textFieldDidBeginEditing(_ textField: UITextField) {
    animateTextField(textField: textField, up: true)
}

func textFieldDidEndEditing(_ textField: UITextField) {
    animateTextField(textField: textField, up: false)
}

添加我的5美分：）

我总是喜欢使用tableView作为inputTextField或scrollView。结合通知，您可以轻松管理此类行为。（注意，如果您在tableView中使用静态单元格，则这种行为将自动为您管理。）

// MARK: - Notifications
fileprivate func registerNotificaitions() {
    NotificationCenter.default.addObserver(self, selector: #selector(AddRemoteControlViewController.keyboardWillAppear(_:)),
                                           name: NSNotification.Name.UIKeyboardWillShow, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(AddRemoteControlViewController.keyboardWillDisappear),
                                           name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}

fileprivate func unregisterNotifications() {
    NotificationCenter.default.removeObserver(self)
}

@objc fileprivate func keyboardWillAppear(_ notification: Notification) {
    if let keyboardHeight = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.height {
        view.layoutIfNeeded()
        UIView.animate(withDuration: 0.3, animations: {
            let heightInset = keyboardHeight - self.addDeviceButton.frame.height
            self.tableView.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: heightInset, right: 0)
            self.view.layoutIfNeeded()
        }, completion: nil)
    }
}

@objc fileprivate func keyboardWillDisappear() {
    view.layoutIfNeeded()
    UIView.animate(withDuration: 0.3, animations: {
        self.tableView.contentInset = UIEdgeInsets.zero
        self.view.layoutIfNeeded()
    }, completion: nil)
}

@用户271753

要恢复原始视图，请添加：

-(BOOL)textFieldShouldReturn:(UITextField *)textField{
   [textField resignFirstResponder];
   [self setViewMovedUp:NO];
   return YES;
}