找到最简单的解决方案

- (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 = 80; // tweak as needed
    const float movementDuration = 0.3f; // tweak as needed

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

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

在视图中设置滚动视图

  - (void)textFieldDidBeginEditing:(UITextField *)textField
    {
     CGPoint point;
    if(textField == txtEmail){
      // -90 is for my you can change as per your postion
      point = CGPointMake(0, textField.frame.origin.y - 90);
    }
    else if (textField == txtContact){
      point = CGPointMake(0, textField.frame.origin.y - 90);
    }
      [scrollV setContentOffset:point animated:YES];
    }

我认为如果您使用Swift，最好的方法是使用面向协议的编程。

首先，您必须创建KeyboardCapable协议，使符合该协议的任何UIViewController都能够注册和注销键盘观察员：

import Foundation
import UIKit

protocol KeyboardCapable: KeyboardAnimatable {
    func keyboardWillShow(notification: NSNotification)
    func keyboardWillHide(notification: NSNotification)
}

extension KeyboardCapable where Self: UIViewController {
    func registerKeyboardNotifications() {
        NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillShow:"), name:UIKeyboardWillShowNotification, object: nil)
        NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardWillHide:"), name:UIKeyboardWillHideNotification, object: nil)
    }

    func unregisterKeyboardNotifications() {
        NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: nil)
        NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: nil)
    }
}

您已经注意到上述代码中有一个无关的KeyboardAnimatable关键字。这只是我们需要创建的下一个协议的名称：

import Foundation
import UIKit

protocol KeyboardAnimatable {

}

extension KeyboardAnimatable where Self: UIViewController {
    func performKeyboardShowFullViewAnimation(withKeyboardHeight height: CGFloat, andDuration duration: NSTimeInterval) {
        UIView.animateWithDuration(duration, animations: { () -> Void in
            self.view.frame = CGRectMake(view.frame.origin.x, -height, view.bounds.width, view.bounds.height)
            }, completion: nil)
    }

    func performKeyboardHideFullViewAnimation(withDuration duration: NSTimeInterval) {
        UIView.animateWithDuration(duration, animations: { () -> Void in
            self.view.frame = CGRectMake(view.frame.origin.x, 0.0, view.bounds.width, view.bounds.height)
            }, completion: nil)
    }
}

这个KeyboardAnimatable协议为所有符合它的UIViewController提供了两种方法，分别为整个视图上下设置动画。

好的，如果KeyboardCapable符合KeyboardAnimatable，则所有符合Keyboard Capable的UIViewController也符合KeyboaardAnimatable。这很酷。

让我们看看符合KeyboardCapable的UIViewController，并对键盘事件做出反应：

import Foundation
import UIKit

class TransferConfirmViewController: UIViewController, KeyboardCapable {
    //MARK: - LIFE CYCLE       
    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        registerKeyboardNotifications()
    }

    override func viewWillDisappear(animated: Bool) {
        super.viewWillDisappear(animated)

        unregisterKeyboardNotifications()
    }

    //MARK: - NOTIFICATIONS
    //MARK: Keyboard
    func keyboardWillShow(notification: NSNotification) {
        let keyboardHeight = (notification.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue().height
        let animationDuration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        performKeyboardShowFullViewAnimation(withKeyboardHeight: keyboardHeight, andDuration: animationDuration)
    }

    func keyboardWillHide(notification: NSNotification) {
        let animationDuration = notification.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        performKeyboardHideFullViewAnimation(withDuration: animationDuration)
    }
}

现在，您的UIViewController将响应键盘事件，并将因此产生动画效果。

注意：如果您想要自定义动画而不是推拉视图，则必须在KeyboardAnimatable协议上定义自定义方法或在Keyboard功能上执行这些方法。这取决于你。

我把所有的东西都放在一节课上。加载视图控制器时，只需调用以下代码行：

- (void)viewDidLoad {
    [super viewDidLoad];
    KeyboardInsetScrollView *injectView = [[KeyboardInsetScrollView alloc] init];
    [injectView injectToView:self.view withRootView:self.view];
}

以下是示例项目的链接：https://github.com/caohuuloc/KeyboardInsetScrollView

如果该文本字段位于表的单元格中（即使table.scrollable=NO），也可以轻松自动完成。

注意：桌子的位置和大小必须合理。例如：如果桌子的y位置是从视图底部算起的100，那么300高的键盘将覆盖整个桌子。如果表的高度为10，并且当键盘出现时，其中的文本字段必须向上滚动100才能可见，那么该文本字段将超出表的范围。

找到最简单的解决方案

- (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 = 80; // tweak as needed
    const float movementDuration = 0.3f; // tweak as needed

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

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