目录：
1、校验字符串是否为空
2、判断字符串是否符合邮政编码格式
3、判断字符串是否全是整数
4、判断字符串是否全部是字符
5、判断用户名是否符合要求
6、判断密码是否符合要求
7、判断电话号码是否合法
8、判定string第一位是否从A-Z
9、验证数字及位数
10、验证字母及位数
11、验证数字或字母
12、验证邮箱格式是否正确
1、是否为空，返回 YES|NO
+(BOOL)isEmptyString:(NSString*)string
{
if (string == nil)
{
// 如果字符串为空，返回YES
return YES;
}
//去空格之后判断length是否为0（此判断方法也可用于判断其他字符）
NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSString *content = [string stringByTrimmingCharactersInSet:whitespace];
if ([content length] == 0)
{
return YES;//length为0，返回YES
}
return NO;//其余情况返回NO
}
2、判断字符串是否符合邮政编码格式
+ (BOOL)checkZipCode:(NSString *)coder
{
if (coder.length != 6)
{
return NO;//不是6位，不符合。
}
NSError *error = NULL;
NSString *ruleString = @"[0-9]\\d{5}(?!\\d)";//邮政编码规则
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:ruleString
options:NSRegularExpressionCaseInsensitive
error:&error];
NSUInteger numberOfMatches = [regex numberOfMatchesInString:coder
options:0
range:NSMakeRange(0, [coder length])];
if(numberOfMatches == 1)
{
return YES;//numberOfMatches为1时符合规则。
}
else
{
return NO;
}
}
3、判断输入字符串是否全部是整数
+ (BOOL)isPureInt:(NSString *)string
{
NSScanner *scan = [NSScanner scannerWithString:string];
int value;
BOOL scanIntVal = [scan scanInt:&value] ;
BOOL scanAtEnd = [scan isAtEnd];
BOOL intValue = [string intValue] > 0;
//满足以上三个条件则是整数
return (intVal && scanAtEnd && intValue);
}
4、判断输入是否全部都是字符（不允许有汉字、数字等，不能为空）
+ (BOOL)checkAllIsLetter:(NSString *)psw
{
BOOL hasOther = NO;
int length = [psw length];
if (length == 0)
{
return NO;//输入字符串为空
}
//判断是否有汉字
for (int i = 0; i < length; i++)
{
NSRange range = NSMakeRange(i, 1);
NSString *subString = [psw substringWithRange:range];
const char *cString = [subString UTF8String];
if (strlen(cString) == 3)
{
return NO;//有汉字
}
}
//判断是否含有数字
const char *s = [psw UTF8String];//转化成C语言字符串
for (int i = 0; i < length; i++)
{
if (s[i] >= '0' && s[i] <= '9')
{
hasOther = YES;//含有数字
}
}
return !hasOther;
}
5、判断用户名是否符合要求（ 1：小于30位。2：数字＋字母。3：不能包含其它字符）
+ (BOOL)checkUserName:(NSString *)psw
{
BOOL hasOther = NO;
int length = [psw length];
//判断是否是小于30位
if(length > 30)
{
return NO;
}
//判断是否有汉字
for (int i = 0; i < length; i++)
{
NSRange range = NSMakeRange(i, 1);
NSString *subString = [psw substringWithRange:range];
const char *cString = [subString UTF8String];
if (strlen(cString) == 3)
return NO;
}
//判断是否是数字＋字母
const char *s=[psw UTF8String];
for(int i = 0;i < length; i++)
{
if (s[i] >= '0' && s[i] <= '9')
continue;
else if (s[i] >= 'a' && s[i] <= 'z')
continue;
else if (s[i] >= 'A' && s[i] <= 'Z')
continue;
else
hasOther = YES;
}
if(hasOther)
return NO;
else
return YES;
}
6、判断密码是否符合要求（1：8－16位置。2：数字＋字母。3：不能全是数字或全是字母）
+ (BOOL)checkPsw:(NSString *)psw
{
BOOL hasNum = NO;
BOOL hasLetter = NO;
BOOL hasOther = NO;
int length = [psw length];
//判断是否是8－16位
if (length > 16 || length < 8)
return NO;
//判断是否有汉字
for (int i = 0; i < length; i++)
{
NSRange range = NSMakeRange(i, 1);
NSString *subString = [psw substringWithRange:range];
const char *cString = [subString UTF8String];
if (strlen(cString) == 3)
return NO;
}
//判断是否是数字＋字母
const char *s=[psw UTF8String];
for (int i = 0;i < length; i++)
{
if (s[i] >= '0' && s[i] <= '9')
hasNum = YES;
else if (s[i] >= 'a' && s[i] <= 'z')
hasLetter = YES;
else if (s[i] >= 'A' && s[i] <= 'Z')
hasLetter = YES;
else
hasOther = YES;
}
if (hasNum && hasLetter && !hasOther)
return YES;
else
return NO;
}
7、判断电话号码是否合法
+ (BOOL)isMobileNumber:(NSString *)mobileNum
{
/**
* 手机号码
* 移动：134[0-8],135,136,137,138,139,150,151,157,158,159,182,187,188
* 联通：130,131,132,152,155,156,185,186
* 电信：133,1349,153,180,189
*/
//NSString * MOBILE = @"^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$";
/**
10 * 中国移动：China Mobile
11 * 134[0-8],135,136,137,138,139,150,151,152,157,158,159,182,183,184,187,188,17**
12 */
NSString *CM = @"^1(34[0-8]|(3[5-9]|5[0127-9]|8[23478]|7[0-9])\\d)\\d{7}$";
/**
15 * 中国联通：China Unicom
16 * 130,131,132,155,156,185,186,17**
17 */
//modify by zhangcz, 添加联通4G，176的号，而且没有152的号
NSString *CU = @"^1(3[0-2]|5[56]|8[56]|7[6])\\d{8}$";
/**
20 * 中国电信：China Telecom
21 * 133,1349,153,180,189,17**
22 */
NSString *CT = @"^1((33|53|8[09]|7[0-9])[0-9]|349)\\d{7}$";
//NSPredicate *regextestmobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", MOBILE];
NSPredicate *regextestcm = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CM];
NSPredicate *regextestcu = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CU];
NSPredicate *regextestct = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", CT];
if (([regextestcm evaluateWithObject:mobileNum] == YES)
|| ([regextestct evaluateWithObject:mobileNum] == YES)
|| ([regextestcu evaluateWithObject:mobileNum] == YES))
{
return YES;
}
else
{
return NO;
}
}
8、判定string第一位是否是从A-Z
/*
*判定string第一位是否是从A-Z
*/
+ (BOOL)isAlphabet:(NSString *)firstAlphabet
{
NSString *IDENTITYNUM= @"^[A-Z]$";
NSPredicate *regextestBankNum = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",IDENTITYNUM];
if ([regextestBankNum evaluateWithObject:firstAlphabet] == YES)
{
return YES;
}
else
{
return NO;
}
}
9、验证数字及位数（numStr:需要验证的字符串，count:需要验证的位数）
+ (BOOL)isNumber:(NSString*)numStr count:(int)count
{
NSString * regex = @"^[0-9]*$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if ([pred evaluateWithObject:numStr] && numStr.length == count)
{
return YES;
}
return NO;
}
10、验证字母及位数
+(BOOL)isLetter:(NSString *)letterStr count:(int)count
{
NSString *regex = @"^[A-Za-z]*$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if ([pred evaluateWithObject:letterStr] && letterStr.length == count)
{
return YES;
}
return NO;
}
11、验证是数字或字母
+(BOOL)isLetterOrNum:(NSString*)str count:(int)count
{
NSString * regex = @"^[A-Za-z0-9]*$";
NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
if ([pred evaluateWithObject:str] && str.length == count)
{
return YES;
}
return NO;
}
12、判断邮箱格式是否正确
+ (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];
}
