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834天前-(BOOL)validateEmail:(NSString*)email |
{ |
if((0 != [email rangeOfString:@"@"].length) && |
(0 != [email rangeOfString:@"."].length)) |
{ |
NSCharacterSet* tmpInvalidCharSet = [[NSCharacterSet alphanumericCharacterSet] invertedSet]; |
NSMutableCharacterSet* tmpInvalidMutableCharSet = [[tmpInvalidCharSet mutableCopy] autorelease]; |
[tmpInvalidMutableCharSet removeCharactersInString:@"_-"]; |
|
/* |
*使用compare option 来设定比较规则，如 |
*NSCaseInsensitiveSearch是不区分大小写 |
*NSLiteralSearch 进行完全比较,区分大小写 |
*NSNumericSearch 只比较定符串的个数，而不比较字符串的字面值 |
*/ |
NSRange range1 = [email rangeOfString:@"@" |
options:NSCaseInsensitiveSearch]; |
|
//取得用户名部分 |
NSString* userNameString = [email substringToIndex:range1.location]; |
NSArray* userNameArray = [userNameString componentsSeparatedByString:@"."]; |
|
for(NSString* string in userNameArray) |
{ |
NSRange rangeOfInavlidChars = [string rangeOfCharacterFromSet: tmpInvalidMutableCharSet]; |
if(rangeOfInavlidChars.length != 0 || [string isEqualToString:@""]) |
return NO; |
} |
|
//取得域名部分 |
NSString *domainString = [email substringFromIndex:range1.location+1]; |
NSArray *domainArray = [domainString componentsSeparatedByString:@"."]; |
|
for(NSString *string in domainArray) |
{ |
NSRange rangeOfInavlidChars=[string rangeOfCharacterFromSet:tmpInvalidMutableCharSet]; |
if(rangeOfInavlidChars.length !=0 || [string isEqualToString:@""]) |
return NO; |
} |
|
return YES; |
} |
else { |
return NO; |
} |
} |
//利用正则表达式验证 |
-(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]; |
} |
高级设计师
by: 神马 发表于：2012-09-07 20:10:07 顶(0) | 踩(0) 回复
很好用哦
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