iOS开发笔记:实现对手机号、邮箱输入格式的判断(正则表达式)

刚转行iOS的搬砖工人,在此记录下这条路上的点点滴滴,共勉

废话:

现在APP的登录注册基本上已经离不开手机和邮箱绑定。今天在遇到了对输入的文本进行邮箱格式判断这个问题,所以google了一下,发现一个叫正则表达式的东西(应该大学学过,但是毫无印象)。

学习笔记:判断输入的手机、邮箱格式是否正确:

判断手机号码格式是否合法的正则表达式:

//手机号码的正则表达式
- (BOOL)isValidateMobile:(NSString *)mobile{
    //手机号以13、15、18开头,八个\d数字字符
    NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
    return [phoneTest evaluateWithObject:mobile];
}

判断邮箱格式是否合法的正则表达式:

//邮箱地址的正则表达式
- (BOOL)isValidateEmail:(NSString *)email{
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:email];
}

新建一个工程,来实际测试一下,在storyboard放入相应的控件,关联到代码中:

iOS开发笔记:实现对手机号、邮箱输入格式的判断(正则表达式)_第1张图片
控件关联到代码中
完整代码:
#import "ViewController.h"

@interface ViewController ()

@property (strong, nonatomic) IBOutlet UITextField *mobileText;//手机号码
@property (strong, nonatomic) IBOutlet UITextField *emailText;//邮箱地址
- (IBAction)mobileTestButton:(id)sender;//验证手机
- (IBAction)emailTestButon:(id)sender;//验证邮箱

@end

@implementation ViewController

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

}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

//手机号码的正则表达式
- (BOOL)isValidateMobile:(NSString *)mobile{
    //手机号以13、15、18开头,八个\d数字字符
    NSString *phoneRegex = @"^((13[0-9])|(15[^4,\\D])|(18[0,0-9]))\\d{8}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
    return [phoneTest evaluateWithObject:mobile];
}
//邮箱地址的正则表达式
- (BOOL)isValidateEmail:(NSString *)email{
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:email];
}

//点击按钮,弹出提示信息,验证输入的手机格式是否正确
- (IBAction)mobileTestButton:(id)sender {
    if ([self isValidateMobile:_mobileText.text] == YES ) {
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"眼神不错,你输入的手机号有效"
                                                                       message:nil
                                                                preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction* ensureAction = [UIAlertAction actionWithTitle:@"原来如此"
                                                               style:UIAlertActionStyleDefault
                                                             handler:nil];
        [alert addAction:ensureAction];
        [self presentViewController:alert animated:YES completion:nil];
        
    }else{
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"逗我呢?你这根本不是手机号啊"
                                                                       message:nil
                                                                preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction* action = [UIAlertAction actionWithTitle:@"原来如此"
                                                                style:UIAlertActionStyleDefault
                                                              handler:nil];
        [alert addAction:action];
        [self presentViewController:alert animated:YES completion:nil];
        
    }
}
//点击按钮,弹出提示信息,验证输入的邮箱格式是否正确
- (IBAction)emailTestButon:(id)sender {
    if ([self isValidateEmail:_emailText.text] ==YES) {
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"眼神不错,你输入的邮箱有效"
                                                                       message:nil
                                                                preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction* action = [UIAlertAction actionWithTitle:@"原来如此"
                                                               style:UIAlertActionStyleDefault
                                                             handler:nil];
        [alert addAction:action];
        [self presentViewController:alert animated:YES completion:nil];
        
    }else{
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"逗我呢?你这根本不是邮箱好吧"
                                                                       message:nil
                                                                preferredStyle:UIAlertControllerStyleAlert];
        UIAlertAction* action = [UIAlertAction actionWithTitle:@"原来如此"
                                                               style:UIAlertActionStyleDefault
                                                             handler:nil];
        [alert addAction:action];
        [self presentViewController:alert animated:YES completion:nil];
    }
}
@end

测试,输入一个无效的手机号码:


iOS开发笔记:实现对手机号、邮箱输入格式的判断(正则表达式)_第2张图片
错误的手机号码

测试,输入一个正确的邮箱:


iOS开发笔记:实现对手机号、邮箱输入格式的判断(正则表达式)_第3张图片
正确的邮箱地址

PS:眼睛很酸涩,本来想早点睡觉的。。。但是强大的毅力还是支撑着我又坚持着写了下来,虽然写得很草率。。。
睡觉!睡觉!今天终于可以在一点钟之前睡个觉了,简直nice!

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