iOS常用的正则表达式集合

@interface Helper : NSObject

//字符串文字的长度
+(CGFloat)widthOfString:(NSString *)string font:(UIFont*)font height:(CGFloat)height;
//字符串文字的高度
+(CGFloat)heightOfString:(NSString *)string font:(UIFont*)font width:(CGFloat)width;
//获取今天的日期：年月日
+(NSDictionary *)getTodayDate;
//自定义 正则匹配
+ (BOOL) justWithInitRegularly:(NSString *)Regularly Str:(NSString *)str;
//邮箱
+ (BOOL) justEmail:(NSString *)email;
//手机号码验证
+ (BOOL) justMobile:(NSString *)mobile;
//车牌号验证
+ (BOOL) justCarNo:(NSString *)carNo;
//车型
+ (BOOL) justCarType:(NSString *)CarType;
//用户名
+ (BOOL) justUserName:(NSString *)name;
//密码
+ (BOOL) justPassword:(NSString *)passWord;
//昵称
+ (BOOL) justNickname:(NSString *)nickname;
//身份证号
+ (BOOL) justIdentityCard: (NSString *)identityCard;
//汉字
+ (BOOL) justChineseCharacter:(NSString *)Chinese;
//网址Url
+ (BOOL) justURlSite:(NSString *)urlSite;
//IP
+ (BOOL) justIP:(NSString *)ip;
//匹配流量ID
+ (BOOL) justFromID:(NSString *)fid;
@end

#import "Helper.h" 
@implementation Helper 
+(CGFloat)widthOfString:(NSString *)string font:(UIFont *)font height:(CGFloat)height
{
 NSDictionary * dict=[NSDictionary dictionaryWithObject: font forKey:NSFontAttributeName]; 
 CGRect rect=[string boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, height) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:dict context:nil]; 
 return rect.size.width; 
}
+(CGFloat)heightOfString:(NSString *)string font:(UIFont *)font width:(CGFloat)width
{
CGRect bounds;
 NSDictionary * parameterDict=[NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName]; 
 bounds=[string boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX) options:NSStringDrawingTruncatesLastVisibleLine|NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:parameterDict context:nil]; 
return bounds.size.height;
}
#pragma  mark - 获取当天的日期：年月日
+ (NSDictionary *)getTodayDate
{
 //获取今天的日期
 NSDate *today = [NSDate date]; 
 NSCalendar *calendar = [NSCalendar currentCalendar]; 
 NSCalendarUnit unit = kCFCalendarUnitYear|kCFCalendarUnitMonth|kCFCalendarUnitDay; 
 NSDateComponents *components = [calendar components:unit fromDate:today];
 NSString *year = [NSString stringWithFormat:@"%ld", (long)[components year]]; 
 NSString *month = [NSString stringWithFormat:@"ld", (long)[components month]]; 
 NSString *day = [NSString stringWithFormat:@"ld", (long)[components day]]; 
 NSMutableDictionary *todayDic = [[NSMutableDictionary alloc] init]; 
[todayDic setObject:year forKey:@"year"];
[todayDic setObject:month forKey:@"month"];
[todayDic setObject:day forKey:@"day"];
return todayDic;
}
//邮箱
+ (BOOL) justEmail:(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];
}
//手机号码验证
+ (BOOL) justMobile:(NSString *)mobile
{
 //手机号以13，14， 15，18 ,17开头，八个 /d 数字字符
 NSString *phoneRegex = @"^((13[0-9])|(14[0-9])|(15[^4,//D])|(18[0,0-9])|(17[0,0-9]))//d{8}$"; 
 NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex]; 
return [phoneTest evaluateWithObject:mobile];
}
//车牌号验证
+ (BOOL) justCarNo:(NSString *)carNo
{
 NSString *carRegex = @"^[/u4e00-/u9fa5]{1}[a-zA-Z]{1}[a-zA-Z_0-9]{4}[a-zA-Z_0-9_/u4e00-/u9fa5]$"; 
 NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",carRegex]; 
 //    NSLog(@"carTest is %@",carTest);
return [carTest evaluateWithObject:carNo];
}
//车型
+ (BOOL) justCarType:(NSString *)CarType
{
 NSString *CarTypeRegex = @"^[/u4E00-/u9FFF]+$"; 
 NSPredicate *carTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",CarTypeRegex]; 
return [carTest evaluateWithObject:CarType];
}
//用户名
+ (BOOL) justUserName:(NSString *)name
{
 NSString *userNameRegex = @"^[A-Za-z0-9]{6,20}+$"; 
NSPredicate *userNamePredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",userNameRegex];
BOOL B = [userNamePredicate evaluateWithObject:name];
 return B; 
}
//密码
+ (BOOL) justPassword:(NSString *)passWord
{
 NSString *passWordRegex = @"^[a-zA-Z0-9]{6,20}+$"; 
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",passWordRegex];
return [passWordPredicate evaluateWithObject:passWord];
}
//昵称
+ (BOOL) justNickname:(NSString *)nickname
{
 NSString *nicknameRegex = @"^[/u4e00-/u9fa5]{4,8}$"; 
NSPredicate *passWordPredicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",nicknameRegex];
return [passWordPredicate evaluateWithObject:nickname];
}
//身份证号
+ (BOOL) justIdentityCard: (NSString *)identityCard
{
BOOL flag;
if (identityCard.length  0) {
 return YES; 
}
}
return NO; 
}