这是一个简单的解决方案在swift，没有标签使用，没有故事板技巧…

只需使用这个扩展:

extension UITextField{

    func nextTextFieldField() -> UITextField?{
        //field to return
        var returnField : UITextField?
        if self.superview != nil{
            //for each view in superview
            for (_, view) in self.superview!.subviews.enumerate(){
                //if subview is a text's field
                if view.isKindOfClass(UITextField){
                    //cast curent view as text field
                    let currentTextField = view as! UITextField
                    //if text field is after the current one
                    if currentTextField.frame.origin.y > self.frame.origin.y{
                        //if there is no text field to return already
                        if returnField == nil {
                            //set as default return
                            returnField = currentTextField
                        }
                            //else if this this less far than the other
                        else if currentTextField.frame.origin.y < returnField!.frame.origin.y{
                            //this is the field to return
                            returnField = currentTextField
                        }
                    }
                }
            }
        }
        //end of the mdethod
        return returnField
    }

}

并调用它像这样(例如)与你的textfield委托:

func textFieldShouldReturn(textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    textField.nextTextFieldField()?.becomeFirstResponder()
    return true
}

我在我的故事板中有大约10+ UITextField，我启用下一个功能的方式是通过创建一个UITextField数组，并使下一个UITextField成为firstResponder。下面是实现文件:

#import "RegistrationTableViewController.h"

@interface RegistrationTableViewController ()
@property (weak, nonatomic) IBOutlet UITextField *fullNameTextField;
@property (weak, nonatomic) IBOutlet UITextField *addressTextField;
@property (weak, nonatomic) IBOutlet UITextField *address2TextField;
@property (weak, nonatomic) IBOutlet UITextField *cityTextField;
@property (weak, nonatomic) IBOutlet UITextField *zipCodeTextField;
@property (weak, nonatomic) IBOutlet UITextField *urlTextField;
@property (weak, nonatomic) IBOutlet UITextField *usernameTextField;
@property (weak, nonatomic) IBOutlet UITextField *emailTextField;
@property (weak, nonatomic) IBOutlet UITextField *passwordTextField;
@property (weak, nonatomic) IBOutlet UITextField *confirmPWTextField;

@end
NSArray *uiTextFieldArray;
@implementation RegistrationTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSLog(@"view did load");
    uiTextFieldArray = @[self.fullNameTextField,self.addressTextField,self.address2TextField,self.cityTextField,self.zipCodeTextField,self.urlTextField,self.usernameTextField,self.emailTextField,self.passwordTextField,self.confirmPWTextField];
    for(UITextField *myField in uiTextFieldArray){
        myField.delegate = self;
    }


}
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
    long index = [uiTextFieldArray indexOfObject:textField];
    NSLog(@"%ld",index);
    if(index < (uiTextFieldArray.count - 1)){
        [uiTextFieldArray[++index] becomeFirstResponder];
    }else{
        [uiTextFieldArray[index] resignFirstResponder];
    }
    return YES;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

你可以使用IQKeyboardManager库来做到这一点。它处理所有的事情，你不需要任何额外的设置。IQKeyboardManager可以通过CocoaPods获得，要安装它，只需在Podfile中添加以下行:

pod 'IQKeyboardManager'

或 只需拖放IQKeyBoardManager目录从演示项目到您的项目。就是这样。 IQKeyBoardManager目录可以从https://github.com/hackiftekhar/IQKeyboardManager找到

没有usings标签，也没有为nextField/nextTextField添加属性，你可以尝试模拟TAB，其中"testInput"是你当前的活动字段:

if ([textInput isFirstResponder])
    [textInput.superview.subviews enumerateObjectsAtIndexes:
     [NSIndexSet indexSetWithIndexesInRange:
      NSMakeRange([textInput.superview.subviews indexOfObject:textInput]+1,
                  [textInput.superview.subviews count]-[textInput.superview.subviews indexOfObject:textInput]-1)]
                                                    options:0 usingBlock:^(UIView *obj, NSUInteger idx, BOOL *stop) {
                                                        *stop = !obj.hidden && [obj becomeFirstResponder];
                                                    }];
if ([textInput isFirstResponder])
    [textInput.superview.subviews enumerateObjectsAtIndexes:
     [NSIndexSet indexSetWithIndexesInRange:
      NSMakeRange(0,
                  [textInput.superview.subviews indexOfObject:textInput])]
                                                    options:0 usingBlock:^(UIView *obj, NSUInteger idx, BOOL *stop) {
                                                        *stop = !obj.hidden && [obj becomeFirstResponder];
                                                    }];

首先在xib中设置键盘返回键，否则你可以在viewdidload中编写代码:

passWord.returnKeyType = UIReturnKeyNext;

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
    if(textField == eMail) {
        [textField resignFirstResponder];
        [userName becomeFirstResponder];
    }
    if (textField==userName) {
        [textField resignFirstResponder];
        [passWord becomeFirstResponder];
    }
    if (textField==passWord) {
        [textField resignFirstResponder];
        [country becomeFirstResponder];
    }
    if (textField==country) {
        [textField resignFirstResponder];
    }
    return YES;
}

如果有人想这样。我认为这是最接近问题所要求的要求

下面是我如何实现它

为需要设置的每个文本字段添加附件视图，使用

func setAccessoryViewFor(textField : UITextField)    {
    let toolBar = UIToolbar()
    toolBar.barStyle = .default
    toolBar.isTranslucent = true
    toolBar.sizeToFit()

    // Adds the buttons

    // Add previousButton
    let prevButton = UIBarButtonItem(title: "<", style: .plain, target: self, action: #selector(previousPressed(sender:)))
    prevButton.tag = textField.tag
    if getPreviousResponderFor(tag: textField.tag) == nil {
        prevButton.isEnabled = false
    }

    // Add nextButton
    let nextButton = UIBarButtonItem(title: ">", style: .plain, target: self, action: #selector(nextPressed(sender:)))
    nextButton.tag = textField.tag
    if getNextResponderFor(tag: textField.tag) == nil {
        nextButton.title = "Done"
    }

    let spaceButton = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
    toolBar.setItems([prevButton,spaceButton,nextButton], animated: false)
    toolBar.isUserInteractionEnabled = true
    textField.inputAccessoryView = toolBar
}

使用以下函数来处理轻拍

func nextPressed(sender : UIBarButtonItem) {
    if let nextResponder = getNextResponderFor(tag: sender.tag) {
        nextResponder.becomeFirstResponder()
    } else {
        self.view.endEditing(true)
    }

}

func previousPressed(sender : UIBarButtonItem) {
    if let previousResponder = getPreviousResponderFor(tag : sender.tag)  {
        previousResponder.becomeFirstResponder()
    }
}

func getNextResponderFor(tag : Int) -> UITextField? {
    return self.view.viewWithTag(tag + 1) as? UITextField
}

func getPreviousResponderFor(tag : Int) -> UITextField? {
    return self.view.viewWithTag(tag - 1) as? UITextField
}

您需要按您希望下一个/前一按钮响应的顺序给出textFields标记。