判断邮箱格式是否正确的代码

-( 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];

}