iOS uses common regular expressions to verify password ID phone number

In the project, we are validating the user's input, the simplest way is to use regular expression, iOS system also provides a very convenient way, so that we can easily verify the user name, password, id good, mobile phone number, etc.

Here is a validation method for the regular expression I used in my project,

Due to the more commonly used, it is best to encapsulate a static method, easy to use:

I use the usual methods, which are encapsulated in a Utils class using static methods, and can be called directly using the class name:

Header file:

  utils.h//  autosizing////  Created by YB on 15/2/7.//  Copyright (c) 2015 http://blog.csdn.net/ Yangbingbinga. All rights reserved.//#import <Foundation/Foundation.h> @interface utils:nsobject#pragma Regular Match phone number + (BOOL) Checktelnumber: (NSString *) Telnumber; #pragma regular match user password 6-18 digit and letter combination + (BOOL) Checkpassword: (NSString *) password;# pragma match user name, 20-bit Chinese or English + (BOOL) Checkusername: (NSString *) userName; #pragma regular match User ID number + (BOOL) Checkuseridcard: ( NSString *) Idcard; #pragma regular employee number, 12 digit + (BOOL) Checkemployeenumber: (NSString *) number; #pragma regular match url+ (BOOL) Checkurl: (nsstring *) URL; @end

. m implementation file:

utils.m//autosizing////Created by YB on 15/2/7.//Copyright (c) 2015 Http://blog.csdn.net/yangbingbinga. All rights reserved.//#import "Utils.h" @implementation utils#pragma regular Match phone number + (BOOL) Checktelnumber: (NSString *)    telnumber{nsstring *pattern = @ "^1+[3578]+\\d{9}";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern];    BOOL IsMatch = [pred evaluatewithobject:telnumber]; return isMatch;} #pragma regular match user password 6-18-bit number and letter combination + (BOOL) Checkpassword: (NSString *) password{nsstring *pattern = @ "^ (?! [0-9]+$) (?!    [a-za-z]+$] [a-za-z0-9]{6,18} ";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern];    BOOL IsMatch = [pred Evaluatewithobject:password];    return isMatch; } #pragma match user name, 20-bit Chinese or English + (BOOL) Checkusername: (NSString *) username{nsstring *pattern = @ "^[a-za-z\u4e00-\u9fa5]{    1,20} ";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern]; BOOL IsMatch = [pred evaluatewitHobject:username];    return isMatch; } #pragma regular match user ID number 15 or 18 bit + (BOOL) Checkuseridcard: (NSString *) idcard{nsstring *pattern = @ "(^[0-9]{15}$) | ( [0-9] {17} ([0-9]|    X) $) ";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern];    BOOL IsMatch = [pred evaluatewithobject:idcard]; return isMatch;}        #pragma regular employee number, 12 digit + (BOOL) Checkemployeenumber: (NSString *) number{nsstring *pattern = @ "^[0-9]{12}";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern];    BOOL IsMatch = [pred evaluatewithobject:number];    return isMatch;    } #pragma regular match url+ (BOOL) Checkurl: (NSString *) url{nsstring *pattern = @ "^[0-9a-za-z]{1,50}";    Nspredicate *pred = [Nspredicate predicatewithformat:@ "Self MATCHES%@", pattern];    BOOL IsMatch = [pred evaluatewithobject:url];    return isMatch; } @end

Original address: Http://blog.csdn.net/yangbingbinga

Examples of Use methods:

    if ([Utils checktelnumber:@ "18801112020"])  //Match result, yes    {        NSLog (@ "Phone number format correct");    }    else                                        //Match result is no    {        NSLog (@ "Phone number format error");    }

iOS uses common regular expressions to verify password ID phone number