点击return和空白回收键盘跳到下一个_按return键来看下一个图-优快云博客

本文介绍了一个简单的iOS应用示例，该应用使用Objective-C创建了五个TextField，并对其键盘输入进行了管理。通过点击手势实现键盘的弹出与收回，同时实现了TextField之间的跳转功能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

RootViewController.m

#import "RootViewController.h"

@interface RootViewController ()<UITextFieldDelegate>

@end

@implementation RootViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    self.view.backgroundColor = [UIColor colorWithRed:194 /255.0 green:194 /255.0 blue:194 /255.0 alpha:1];
    self.navigationController.navigationBar.translucent = NO;

    for (NSInteger i = 0; i < 5; i++) {
        UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(100, 10 + i * 60 , 150, 50)];
        [self.view addSubview:textField];
        [textField release];
        textField.layer.borderWidth = 1;
        textField.backgroundColor = [UIColor whiteColor];
        textField.tag = i;

        textField.delegate = self;

        //  是第一个textField成为第一响应者
        if (i == 0) {
            [textField becomeFirstResponder];
        }
    }
    //  开启用户交换
    self.view.userInteractionEnabled = YES;
    //  点击手势
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(click:)];
    [self.view addGestureRecognizer:tap];
    [tap release];



}
- (void)textFieldDidEndEditing:(UITextField *)textField {
    [textField resignFirstResponder];
}
- (void)click:(UITapGestureRecognizer *)tap {
    //  是View和其所有subView失去第一响应者的资格
    //  点击空白回收键盘
    [self.view endEditing:YES];
}


- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    //  点击return跳到下一个textField, 点击空白回收键盘
    UITextField *newField = [[UITextField alloc] init];
    newField = (UITextField *)[self.view viewWithTag:(textField.tag + 1)];
    NSLog(@"%ld", newField.tag);
    if (textField.tag == 4) {
        [textField resignFirstResponder];
    } else {
        [newField becomeFirstResponder];
    }

    return YES;
}