Regular expressions commonly used in iOS (mobile phone number mailbox MD5 encryption validation empty string, etc.)

Source: Internet
Author: User
Tags md5 encryption

Can write a nssring category to add some methods to NSString, and these methods are some regular expressions.

Like writing a class called Helper, it's nsstring+helper.

The. h and. m files are then written.

#pragma mark-Verify related/* Verify related  *///1. Is the mobile number- (BOOL) ISMOBILENUMBER;//2. Is the mailbox-(BOOL) ISVALIDATEEMAIL;//3. Whether it is an empty string- (BOOL) ISNULLSTR;//4. Whether it is an empty object-(BOOL) isnull;//5. Numeric to String + (nsstring*) Stringfrominteger: (Nsinteger ) NUM;//6. Whether the password conforms to the combination of the standard 8-14-bit alphabetic array-(BOOL) isvalidatepwd; #pragma mark-function-related//function-related *///1.MD5 encryption-(NSString *) md5;// 2. Remove the end-to-end whitespace of the string-(NSString *) trim;      

. m file

/* Verify the relevant *///1. Is the phone number-(BOOL) ismobilenumber{NSString * MOBILE = @ "^1[3-9]\\d{9}$"; Nspredicate *regextestmobile = [Nspredicate predicatewithformat:@ "Self MATCHES%@", MOBILE]; if ([regextestmobile evaluatewithobject:self] = =YES) {returnYES; }else{returnNO; }}//2. Whether it is a mailbox-(BOOL) isvalidateemail{nsstring *emailregex = @ "^ ([a-z0-9a-z]+[-_|\\.]?) +[a-z0-9a-z]@ ([a-z0-9a-z]+ (-[a-z0-9a-z]+) \ \.) +[a-za-z]{2,}$ "; Nspredicate *emailtest = [Nspredicate predicatewithformat:@ "Self MATCHES%@", Emailregex]; Return[Emailtest evaluatewithobject:self];} 3. Whether it is an empty string-(BOOL) isnullstr{if ([Self isequaltostring:@ <NULL> "]) {returnYES; }else if ([self isequaltostring:@ "(null)"]) {returnYES; }else if ([Self isequaltostring:@ "(NULL)"]) {returnYES; }else if ([Self isequaltostring:@ <null> "]) {returnYES; } returnNO; }//4. Whether it is an empty object-(BOOL) isnull{//Determine if empty string if ([Self isequal:[nsnull null]]) {returnYES; } else if ([Self Iskindofclass:[nsnull class]]) {returnYES; } else if (self==Nil) {returnYES; } returnNO; }//5. Numeric to String + (nsstring*) Stringfrominteger: (Nsinteger) num{return [NSString stringwithformat:@ "%ld", num];} 6. Whether the password conforms to the standard 8-14-character array combination-(BOOL) isvalidatepwd{nsstring *pwdregex = @ "^ (?! [0-9]+$) (?! [a-za-z]+$] [0-9a-za-z]{8,14}$]; Nspredicate *pwdtest = [Nspredicate predicatewithformat:@ "self MATCHES%@", Pwdregex]; return [Pwdtest Evaluatewithobject:self];} #pragma mark-Function-related/* function-related *///1.MD5 encryption-(NSString *) md5{const char* str = [self utf8string]; unsigned char r Esult[cc_md5_digest_length]; CC_MD5 (str, (Cc_long) strlen (str), result); nsmutablestring *ret = [nsmutablestring stringwithcapacity:cc_md5_digest_length*2]; for (int i = 0; i<CC_MD5_ Digest_length; i++) {[ret appendformat:@ "%02x", Result[i]];} return ret;} 2. Remove the end and end spaces of the string-(NSString *) trim{return [self stringbytrimmingcharactersinset:[nscharacterset Whitespaceandnewlinecharacterset]];}             

That's it. When using the Import class name: #import "Nsstring+helper"

And then use it, you can use it directly.

Like what:

Verify the phone number    nsstring *phonenum = @ "17778176004";    NSLog (@ "phonenum:%d", [Phonenum Ismobilenumber]);        Email verification    NSString *emailstr = @ "[email protected]";    NSLog (@ "emailstr:%d", [Emailstr isvalidateemail]);            MD5 encryption This rule needs to set up before and after the unified    nsstring *md5str = @ "ABCDEFG";    NSLog (@ "md5str:%@", [md5str MD5]);//Remove the space before and after nsstring *trimstr = @ "1234567890"; NSLog (@ "trimstr:%@", [trimstr trim]);//is an empty string nsstring *nullstr = @ "(null)"; NSLog (@ "nullstr:%d", [Nullstr isnullstr]);//Whether the empty object seems to be set to empty when it can not fall up the method nsstring *nullobj = nil; [Nullobj IsNull]; NSLog (@ "null:%d", [Nullobj isNull]);          

If you encounter any problems in the use of the process, you can contact me QQ [email protected]

Grow together.

Regular expressions commonly used in iOS (mobile phone number mailbox MD5 encryption validation empty string, etc.)

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.